MAXIM MAX2839AS Technical data

General Description

The MAX2839AS direct conversion, zero-IF, RF transceiver
is designed specifically for 2.3GHz to 2.7GHz 802.16e
MIMO mobile WiMAX™ systems. The device incorpo­rates one transmitter and two receivers, with > 40dB iso­lation between each receiver. The MAX2839AS
completely integrates all circuitry required to implement
the RF transceiver function, providing RF to baseband
receive path, and baseband to RF transmit path, VCO,
frequency synthesizer, crystal oscillator, and base­band/control interface. The device includes a fast-set­tling sigma-delta RF synthesizer with smaller than 40Hz
frequency steps and a crystal oscillator that allows the
use of a low-cost crystal in place of a TCXO. The trans­ceiver IC also integrates circuits for on-chip DC-offset
cancellation, I/Q error, and carrier leakage detection
circuits. An internal transmit to receive loopback mode
allows for receiver I/Q imbalance calibration. The local
oscillator I/Q quadrature phase error can be digitally
corrected in approximately 0.125° steps. Only an RF
bandpass filter (BPF), crystal, RF switch, PA, and a
small number of passive components are needed to
form a complete wireless broadband RF radio solution.

The MAX2839AS completely eliminates the need for an
external SAW filter by implementing on-chip program­mable monolithic filters for both the receiver and trans­mitter, for all 2GHz and 802.16e profiles and WiBro. The
baseband filters along with the Rx and Tx signal paths
are optimized to meet the stringent noise figure and lin­earity specifications. The device supports up to 2048
FFT OFDM and implements programmable channel fil­ters for 3.5MHz to 20MHz RF channel bandwidths. The
transceiver requires only 2µs Tx-Rx switching time. The
IC is available in a small wafer-level package (WLP)
measuring 5.16mm x 3.66mm x 0.5mm.

Applications

802.16e Mobile WiMAX Systems

Korean WiBro Systems

Proprietary Wireless Broadband Systems

802.11g or n WLAN with MRC or MIMO Down Link

Features

o 2.3GHz to 2.7GHz Wideband Operation

o Dual Receivers for MIMO, Single Transmitter

o Complete RF Transceiver, PA Driver, and Crystal

Oscillator

3.5dB Rx Noise Figure on Each Receiver with
Balun

-35dB Rx EVM for 64QAM Signal

0dBm Linear OFDM Transmit Power (64QAM)

-70dBr Tx Spectral Emission Mask

-35dBc LO Leakage

Automatic Rx DC Offset Correction
Monolithic Low-Noise VCO with -39dBc

Integrated Phase Noise

Programmable Rx I/Q Lowpass Channel Filters
Programmable Tx I/Q Lowpass Anti-Aliasing

Filters

Sigma-Delta Fractional-N PLL with 28.61Hz

Minimum Step Size

62dB Tx Gain Control Range with 1dB Step

Size, Digitally Controlled

95dB Rx Gain Control Range with 1dB Step

Size, Digitally Controlled

60dB Analog RSSI Instantaneous Dynamic

Range

4-Wire SPI™ Digital Interface
I/Q Analog Baseband Interface
Digital Tx/Rx Mode Control
Digitally Tuned Crystal Oscillator
On-Chip Digital Temperature Sensor Readout

o +2.7V to +3.6V Transceiver Supply

o Low-Power Shutdown Current

o Small WLP Package (5.16mm x 3.66mm x 0.5mm)

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

________________________________________________________________

Maxim Integrated Products

1

19-4588; Rev 1; 5/10

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

WiMAX is a trademark of the WiMAX Forum.

SPI is a trademark of Motorola, Inc.

Ordering Information

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Bump Configuration and Typical Operating Circuit appear at
end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX2839ASEWO+T

-40°C to +85°C 73 WLP

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

2 _______________________________________________________________________________________

DC ELECTRICAL CHARACTERISTICS

(MAX2839AS Evaluation Kit. Unless otherwise noted, VCC_ = 2.7V to 3.6V, TA= -40°C to +85°C, Rx set to the maximum gain.
ENABLE and TXRX set according to operating mode. CS = high, SCLK = DIN = low, no input signal at RF inputs, all RF inputs and
outputs terminated into 50Ω. 90mV

RMS

differential I and Q signals (1MHz) applied to I, Q baseband inputs of transmitter in transmit

mode, all registers set to recommended settings. Typical values are at V

CC_

= 2.8V, fLO= 2.5GHz, and TA= +25°C.) (Note 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

ABSOLUTE MAXIMUM RATINGS

V

CC_

Pins to GND..................................................-0.3V to +3.9V

RF Inputs: RXINA+, RXINA-, RXINB+,

RXINB- to GND ............................................AC-Coupled Only

RF Outputs: TXOUT+, TXOUT- to GND.................-0.3V to +3.9V

Analog Inputs: TXBBI+, TXBBI-, TXBBQ+,

TXBBQ- to GND.................................................-0.3V to +3.9V

Analog Input: REFCLK, XTAL1 .........................-0.3V to +3.9V

P-P

Analog Outputs: RXBBIA+, RXBBIA-, RXBBQA+, RXBBQA-,

RXBBIB+, RXBBIB-, RXBBQB+, RXBBQB-, CPOUT+,

CPOUT-, PABIAS, RSSI to GND........................-0.3V to +3.9V

Digital Inputs: TXRX, CS, SCLK, DIN, B7:B0,

CLKOUT_DIV, RXHP, ENABLE to GND ............-0.3V to +3.9V

Digital Outputs: DOUT, CLKOUT ..........................-0.3V to +3.9V

Bias Voltages: VCOBYP .......................................-0.3V to +3.9V

Short-Circuit Duration on All Output Pins ...............................10s

RF Input Power: All RXIN_ ..............................................+10dBm

RF Output Differential Load VSWR: All TXOUT .......................6:1

Continuous Power Dissipation (T

A

= +70°C)

73-Bump WLP (derate 31.3mW/°C above +70°C).....2500mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +160°C

Soldering Temperature (reflow) .........................(Note 1) +260°C

Note 1: Refer to Application Note 1891:

Understanding the Basics of the Wafer-Level Chip-Scale Package (WL-CSP)

available at

www.maxim-ic.com

.

CAUTION! ESD SENSITIVE DEVICE

Supply Voltage VCC_ 2.7 3.6 V

Supply Current

Rx I/Q Output Common-Mode
Voltage

Tx Baseband Input Common­Mode Voltage Operating Range

Tx Baseband Input Bias Current Source current 10 20 µA

LOGIC INPUTS: TXRX, ENABLE, SCLK, DIN, CS, B7:B0, CLKOUT_DIV, RXHP

Digital Input-Voltage High, V

Digital Input-Voltage Low, V

Digital Input-Current High, I

PARAMETER CONDITIONS MIN TYP MAX UNITS

IH

IL

IH

Shutdown mode, T
V

CC

Clock-out only mode 2.7 3.8

Standby mode 33 50

Rx mode

Tx mode

Rx calibration mode, both receivers on 153 200

Tx calibration mode 102 145

D[9:8] = 00 in A[4:0] = 00100 0.8 1.05 1.35

D[9:8] = 01 in A[4:0] = 00100 1.15

D[9:8] = 10 in A[4:0] = 00100 1.25

D[9:8] = 11 in A[4:0] = 00100 1.45

DC-coupled 0.5 1.2 V

= +25°C; all logic inputs equal 0 or

A

One receiver on 79 101

Both receivers on 120 148

16 QAM 116 148

64 QAM (Note 3) 145 183

2µA

VCC - 0.4 V

0.4 V

-1 +1 µA

mA

V

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(MAX2839AS Evaluation Kit. Unless otherwise noted, VCC_ = 2.7V to 3.6V, TA= -40°C to +85°C, Rx set to the maximum gain.
ENABLE and TXRX set according to operating mode. CS = high, SCLK = DIN = low, no input signal at RF inputs, all RF inputs and
outputs terminated into 50Ω. 90mV

RMS

differential I and Q signals (1MHz) applied to I, Q baseband inputs of transmitter in transmit

mode, all registers set to recommended settings. Typical values are at V

CC_

= 2.8V, fLO= 2.5GHz, and TA= +25°C.) (Note 2)

AC ELECTRICAL CHARACTERISTICS—Rx MODE

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, TA= +25°C, fRF= 2.4999GHz, fLO= 2.5GHz; baseband output

signal frequency = 100kHz, f

REF

= 40MHz, ENABLE = TXRX = CS = high, SCLK = DIN = low, with power matching for the differential

RF pins using the

Typical Operating Circuit

and registers set to default settings. Lowpass filter is set to 10MHz RF channel BW.

Unmodulated single-tone RF input signal is used.) (Note 2)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Digital Input-Current Low, I

LOGIC OUTPUTS: DOUT, CLKOUT

Digital Output-Voltage High, V

Digital Output-Voltage Low, V

IL

OH

OL

Sourcing 100µA VCC - 0.4 V

Sinking 100µA 0.4 V

-1 +1 µA

RF INPUT TO I, Q BASEBAND-LOADED OUTPUT

RF Input Frequency Range 2.3 2.7 GHz

Peak-to-Peak Gain Variation over
RF Input Frequency Range

RF Input Return Loss All LNA settings 12 dB

Total Voltage Gain

RF Gain Steps

Gain Change Settling Time

Baseband Gain Range

Baseband Gain Step Size 1dB

DSB Noise Figure
(Including Balun Loss)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Tested at band edges and band center 1.5 dB

T
+85°C

From max RF gain (B7:B6 = 00) to max RF gain - 8dB
(B7:B6 = 01)

From max RF gain to max RF gain - 16dB (B7:B6 = 10) 16

From max RF gain to max RF gain - 32dB (B7:B6 = 11) 32

Any RF or baseband gain change; gain settling to within
±1dB of steady state; RXHP = 1

Any RF or baseband gain change; gain settling to within
±0.1dB of steady state; RXHP = 1

From maximum baseband gain (B5:B0 = 000000) to
minimum gain (B5:B0 = 111111), T

Voltage gain = 65dB with max RF gain (B7:B6 = 00) 3.5

V ol tag e g ai n = 50d B w i th m ax RF g ai n - 8d B ( B7:B6 = 01) 8.5

Voltage gain = 45dB with max RF gain - 16dB
(B7:B6 = 10)

Voltage gain = 15dB with max RF gain - 32dB
(B7:B6 = 11)

= -40°C to

A

Maximum gain, B7:B0 = 0000000 92 99

Minimum gain, B7:B0 = 1111111 4 10

8

200

2000

= -40°C to +85°C

A

60.5 63 65.5 dB

14.5

32

dB

dB

ns

dB

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Rx MODE (continued)

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, TA= +25°C, fRF= 2.4999GHz, fLO= 2.5GHz; baseband output

signal frequency = 100kHz, f

REF

= 40MHz, ENABLE = TXRX = CS = high, SCLK = DIN = low, with power matching for the differential

RF pins using the

Typical Operating Circuit

and registers set to default settings. Lowpass filter is set to 10MHz RF channel BW.

Unmodulated single-tone RF input signal is used.) (Note 2)

Out-of-Band Input IP3 (Note 4)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Inband Input P-1dB

Maximum Output Signal Level

I/Q Gain Imbalance 100kHz IQ baseband output; 1 σ variation 0.05 dB

I/Q Phase Error 100kHz IQ baseband output; 1 σ variation 0.25 Degrees

Rx I/Q Output Load Impedance
(R || C)

Loopback Gain (for Receiver I/Q
Calibration)

AGC set for -65dBm wanted signal, max RF gain
(B7:B6 = 00)

AGC set for -55dBm wanted signal, max RF gain - 8dB
(B7:B6 = 01)

AGC set for -40dBm wanted signal, max RF gain - 16dB
(B7:B6 = 10)

AGC set for -30dBm wanted signal, max RF gain - 32dB
(B7:B6 = 11)

Max RF gain (B7:B6 = 00) -37

Max RF gain - 8dB (B7:B6 = 01) -29

Max RF gain - 16dB (B7:B6 = 01) -21

Max RF gain - 32dB (B7:B6 = 11) -4

Over passband frequency range at VGA gain between
max and max - 54dB; 1dB compression point

Minimum differential resistance 10 kΩ

Maximum differential capacitance 5 pF

Transmitter I/Q input to receiver I/Q output; transmitter
B6:B1 = 000011, receiver B5:B0 = 101010 programmed
through SPI

-13

-9

-7

+16

1.15 V

-6 -1 +4.5 dB

dBm

dBm

P-P

After switching RXHP to 0; average over 1µs after any

I/Q Output DC Droop

I/Q Static DC Offset

Isolation Between Rx Channels A
and B

RECEIVER BASEBAND FILTERS

Baseband Filter Rejection

Baseband Highpass Filter Corner
Frequency

gain change, or 2µs after receive enabled with 100Hz
AC-coupling

No RF input signal; measure at 3µs after receive enable;
RXHP = 1 for 0 to 2µs and set to 0 after 2µs, 1 σ variation

Any RF gain settings 40 dB

At 15MHz 57

At 20MHz 75

At > 40MHz 75

RXHP = 1 (used before AGC completion) 650

D[5:4] = 00 0.1

RXHP = 0 (used after AGC
completion) address A[4:0] = 01110

D[5:4] = 01 1

D[5:4] = 10 30

D[5:4] = 11 100

1 V/s

1mV

dB

kHz

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

_______________________________________________________________________________________ 5

AC ELECTRICAL CHARACTERISTICS—Rx MODE (continued)

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, TA= +25°C, fRF= 2.4999GHz, fLO= 2.5GHz; baseband output

signal frequency = 100kHz, f

REF

= 40MHz, ENABLE = TXRX = CS = high, SCLK = DIN = low, with power matching for the differential

RF pins using the

Typical Operating Circuit

and registers set to default settings. Lowpass filter is set to 10MHz RF channel BW.

Unmodulated single-tone RF input signal is used.) (Note 2)

RF Channel BW Supported by
Baseband Filter

Baseband Gain Ripple

Baseband Group Delay Ripple

Baseband Filter Rejection for
5MHz RF Channel BW

Baseband Filter Rejection for
10MHz RF Channel BW

RSSI

RSSI Minimum Output Voltage R

RSSI Maximum Output Voltage R

RSSI Slope 29 mV/dB

RSSI Output Settling Time To within 3dB of steady state

PARAMETER CONDITIONS MIN TYP MAX UNITS

A[4:0] = 00100 serial bits D[9:6] = 0000 1.75

A[4:0] = 00100 serial bits D[9:6] = 0001 2.25

A[4:0] = 00100 serial bits D[9:6] = 0010 3.5

A[4:0] = 00100 serial bits D[9:6] = 0011 5.0

A[4:0] = 00100 serial bits D[9:6] = 0100 5.5

A[4:0] = 00100 serial bits D[9:6] = 0101 6.0

A[4:0] = 00100 serial bits D[9:6] = 0110 7.0

A[4:0] = 00100 serial bits D[9:6] = 0111 8.0

A[4:0] = 00100 serial bits D[9:6] = 1000 9.0

A[4:0] = 00100 serial bits D[9:6] = 1001 10.0

A[4:0] = 00100 serial bits D[9:6] = 1010 12.0

A[4:0] = 00100 serial bits D[9:6] = 1011 14.0

A[4:0] = 00100 serial bits D[9:6] = 1100 15.0

A[4:0] = 00100 serial bits D[9:6] = 1101 20.0

A[4:0] = 00100 serial bits D[9:6] = 1110 24.0

A[4:0] = 00100 serial bits D[9:6] = 1111 28.0

0 to 2.3MHz for RF BW = 5MHz 1.3

0 to 4.6MHz for RF BW = 10MHz 1.3

0 to 2.3MHz for RF BW = 5MHz 90

0 to 4.6MHz for RF BW = 10MHz 50

At 2.3MHz 1.8

At > 8.75MHz 75

At 4.6MHz 1.6

At > 17.5MHz 75

≥ 10kΩ 0.6 V

LOAD

≥ 10kΩ 2.1 V

LOAD

+32dB signal step 200

-32dB signal step 800

dB

ns

MHz

P-P

P-P

dB

dB

ns

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

6 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—Tx MODE

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, TA= +25°C, fRF= 2.501GHz, fLO= 2.5GHz, f

REF

= 40MHz,

ENABLE = CS = high, TXRX = SCLK = DIN = low, with power matching for the differential RF pins using the

Typical Operating Circuit

and registers set to default settings. Lowpass filter is set to 10MHz RF channel BW. 1MHz 90mV

RMS

cosine and sine signals applied

to I/Q baseband inputs of transmitter (differential DC-coupled)). (Note 2)

Tx BASEBAND I/Q INPUTS TO RF OUTPUTS

RF Output Frequency Range 2.3 2.7 GHz

Peak-to-Peak Peak Gain Variation
over RF Band

Total Voltage Gain Max gain - 3dB; at unbalanced 50Ω matched output 3.5 8 dB

Max Output Power over
Frequency

RF Output Return Loss 8dB

RF Gain Control Range B6:B1 = 000000 to 111111 62 dB

Unwanted Sideband Suppression

RF Gain Control Binary Weights

Carrier Leakage

Tx I/Q Input Impedance (R||C)

Baseband Frequency Response
for 5MHz RF Channel BW

Baseband Frequency Response
for 10MHz RF Channel BW

Baseband Group Delay Ripple

PARAMETER CONDITIONS MIN TYP MAX UNITS

64 QAM OFDM signal conforming to spectral emission
mask and -36dB EVM after I/Q imbalance calibration by
modem (Note 5)

Without calibration by modem, and excludes modem I/Q
imbalance; P

B1 1

B2 2

B3 4

B4 8

B5 16

B6 32

Relative to 0dBm output power; without calibration by
modem

Differential resistance 100 kΩ

Differential capacitance 0.5 pF

0 to 3.333MHz 0.9

At > 9.45MHz 43

0 to 6.667MHz 0.9

At > 18.9MHz 43

0 to 3.333MHz (RF BW = 5MHz) 20

0 to 6.667MHz (RF BW = 10MHz) 12

OUT

= 0dBm

12dB

0 dBm

40 dB

-30 dBc

dB

dB

dB

ns

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

_______________________________________________________________________________________ 7

AC ELECTRICAL CHARACTERISTICS—FREQUENCY SYNTHESIS

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, TA= +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, SCLK = DIN

= low, PLL closed-loop unity gain bandwidth = 120kHz. VCO and RF synthesis enabled.) (Note 2)

RF Channel Center Frequency
Range

Channel Center Frequency
Programming Minimum Step Size

Charge-Pump Comparison
Frequency

Reference Frequency Range 15 40 80 MHz

Reference Frequency Input
Levels

Reference Frequency Input
Impedance (R||C)

Programmable Reference Divider
Values

Closed-Loop Integrated Phase
Noise

Charge-Pump Output Current On each differential side 0.8 mA

Close-In Spur Level

Reference Spur Level -85 dBc

Turnaround LO Frequency Error

PARAMETER CONDITIONS MIN TYP MAX UNITS

AC-coupled to REFCLK pin 0.6 V

Resistance (REFCLK pin) 10 kΩ

Capacitance (REFCLK pin) 1 pF

Integrate phase noise from 200Hz to 5MHz; charge­pump comparison frequency = 40MHz

f

= 0 to 1.8MHz -40

OFFSET

f

= 1.8MHz to 7MHz -70

OFFSET

f

> 7MHz -80

OFFSET

Relative to steady state; measured 35µs after Tx-Rx or
Rx-Tx switching instant, and 4µs after any receiver gain
changes

2.3 2.7 GHz

28.61 Hz

40 MHz

124

-39 dBc

±50 Hz

P-P

dBc

Temperature Range Over Which
VCO Maintains Lock

Reference Output Clock Divider
Values

Output Clock Drive Level 20MHz output, A[4:0] = 10100, D5 = 0 2.4 V

Output Clock Load Impedance
(R||C)

Relative to the ambient temperature T

CLKOUT_DIV pin = 0 1

CLKOUT_DIV pin = 1 2

Resistance 10 kΩ

Capacitance 2 pF

at initial lock TA ±40 °C

A

P-P

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

8 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS—MISCELLANEOUS BLOCKS

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, f

REF

= 40MHz, CS = high, SCLK = DIN = low, and TA= +25°C.) (Note

AC ELECTRICAL CHARACTERISTICS—TIMING

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, SCLK = DIN = low, PLL

closed-loop unity gain bandwidth = 120kHz, and T

A

= +25°C.) (Note 2)

PA BIAS DAC: VOLTAGE MODE

Output High level 10mA source current VCC - 0.1 V

Output Low level 100µA sink current 0.1 V

Turn-On Time

CRYSTAL OSCILLATOR

On-Chip Tuning Capacitance
Range

On-Chip Tuning Capacitance
Step Size

ON-CHIP TEMPERATURE SENSOR

Digital Output Code

PARAMETER CONDITIONS MIN TYP MAX UNITS

Excludes programmable delay of 0 to 7µs in steps of

0.5µs

M axi m um cap aci tance, A[ 4:0] = 11000, D [ 6:0] = 1111111 15.5

Minimum capacitance, A[4:0] = 11000, D[6:0] = 0000000 0.5

Readout at DOUT pin through SPI
A[4:0] = 01011, D[4:0]

200 ns

0.12 pF

TA = +25°C 01111

TA = +85°C 11101

T

= -40°C 00001

A

pF

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SYSTEM TIMING

Turnaround Time

Tx Turn-On Time
(from Standby Mode)

Tx Turn-Off Time
(to Standby Mode)

Rx Turn-On Time
(from Standby Mode)

Rx Turn-Off Time
(to Standby Mode)

Measured from Tx or
Rx enable edge;
signal settling to
within 2dB of steady
state

Measured from Tx-enable edge; signal
settling to within 2dB of steady state

From Tx-disable edge 0.1 µs

Measured from Rx-enable edge; signal
settling to within 2dB of steady state

From Rx-disable edge 0.1 µs

Rx to Tx 2

Tx to Rx, RXHP = 1 2

µs

2µs

2µs

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

_______________________________________________________________________________________ 9

AC ELECTRICAL CHARACTERISTICS—TIMING (continued)

(MAX2839AS Evaluation Kit. Unless otherwise noted, V

CC_

= 2.8V, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, SCLK = DIN = low, PLL

closed-loop unity gain bandwidth = 120kHz, and T

A

= +25°C.) (Note 2)

Note 2: Min/max limits are production tested at T

A

= +85°C. Min/max limits at TA= -40°C and TA= +25°C are guaranteed by
design and characterization. The power-on default register settings are not production tested. Load register setting 10µs
after V

CC

is applied.

Note 3: Tx mode supply current is specified for 64 QAM while achieving the Tx output spectrum mask shown in the

Typical Operating

Characteristics

. The supply current can be reduced for 16 QAM signal by adjusting the Tx bias settings through the SPI.

Note 4: Two tones at +20MHz and +39MHz offset with -35dBm/tone. Measure IM3 at 1MHz.
Note 5: Gain adjusted over max gain and max gain -3dB.

4-WIRE SERIAL PARALLEL INTERFACE TIMING (see Figure 1)

SCLK Rising Edge to CS Falling
Edge Wait Time

Falling Edge of CS to Rising
Edge of First SCLK Time

DIN to SCLK Setup Time t

DIN to SCLK Hold Time t

SCLK Pulse-Width High t

SCLK Pulse-Width Low t

Last Rising Edge of SCLK to
Rising Edge of CS or Clock to
Load Enable Setup Time

CS High Pulse Width t

Time Between Rising Edge of CS
and the Next Rising Edge of
SCLK

Clock Frequency f

Rise Time t

Fall Time t

SCLK Falling Edge to Valid DOUT t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

t

CSO

t

CSS

DS

DH

CH

CL

t

CSH

CSW

t

CS1

CLK

R

F

D

6ns

6ns

6ns

6ns

6ns

6ns

6ns

20 ns

6ns

40 MHz

0.1/f

CLK

0.1/f

CLK

12.5 ns

ns

ns

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

10 ______________________________________________________________________________________

Typical Operating Characteristics

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

DUAL Rx SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

MAX2839ASWO+T toc02

2.7 3.0 3.3 3.6

80

90

100

110

120

130

140

TA = -40°C

TA = +25°C

TA = +85°C

Rx MAX GAIN

vs. TEMPERATURE AND FREQUENCY

FREQUENCY (GHz)

RX MAX GAIN (dB)

MAX2939ASWO+T toc05

2.3 2.5 2.62.4 2.7

94

96

98

100

102

TA = -40°C

TA = +25°C

TA = +85°C

RX_B TO RX_A ISOLATION

vs. LNA GAIN SETTING

LNA GAIN SETTING (dB)

RECEIVER ISOLATION (dB)

MAX2839ASWO+T toc08

-35 -25 -15 -5-30 -20 -10 0 5

38

40

42

44

46

LNA = MAX GAIN

LNA = MAX - 8dB

LNA = MAX - 16dB

LNA = MAX - 32dB

SINGLE Rx SUPPLY CURRENT

vs. SUPPLY VOLTAGE

90

85

80

75

TA = +85°C

MAX2839ASWO+T toc01

Rx NOISE FIGURE

vs. BASEBAND GAIN SETTING

40

30

20

LNA = MAX - 32dB

LNA = MAX - 16dB

MAX2839ASWO+T toc03

70

SUPPLY CURRENT (mA)

65

60

TA = +25°C

2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)

TA = -40°C

Rx GAIN vs. FREQUENCY

110

LNA = MAX GAIN

100

90

GAIN (dB)

80

LNA = MAX - 32dB

70

60

2.30 2.50 2.602.35 2.55 2.652.40 2.45 2.70
FREQUENCY (GHz)

LNA = MAX - 8dB

LNA = MAX - 16dB

Rx OUTPUT V

1.6

MAX2839ASWO+T toc04

vs. GAIN SETTING

1dB

NOISE FIGURE (dB)

LNA = MAX - 8dB

10

LNA = MAX GAIN

0

0 9 18 27 36 45 54 63

BASEBAND VGA GAIN CODE

Rx VOLTAGE GAIN

vs. BASEBAND GAIN SETTING

120

LNA = MAX - 8dB

80

40

VOLTAGE GAIN (dB)

LNA = MAX - 16dB

LNA = MAX - 32dB

0

0 9 18 27 36 45 54 63

BASEBAND VGA CODE

LNA = MAX

MAX2839ASWO+T toc06

1.2

)

RMS

(V

1dB

0.8

OUTPUT V

0.4

0

0 9 18 27 36 45 54 63

BASEBAND VGA CODE

MAX2839ASWO+T toc07

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

______________________________________________________________________________________

11

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Rx EVM vs. P

IN

(CHANNEL BANDWIDTH = 10MHz,

64 QAM FUSC)

PIN (dBm)

EVM (%)

MAX2839ASWO+T toc09

-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10

0

2

4

6

8

10

12

14

16

18

20

22

LNA = MAX

LNA = MAX

- 32dB

LNA = MAX

- 16dB

LNA = MAX

- 8dB

0 26.5

Rx EMISSION SPECTRUM AT LNA INPUT

(LNA = MAX GAIN)

MAX2839ASWO+T toc12

FREQUENCY (GHz)

(dBm)

-40

-45

-50

-55

-60

-65

-70

-75

-80

-85

-90

4/3 x LO

4 x LO

WiMAX EVM vs. OFDM JAMMER

(10MHz CHANNEL BANDWIDTH, 64 QAM FUSC)

P

WANTED

= P

SENSITIVITY

+ 3dB = -70.3dBm AT ANTENNA

(INCLUDING 4dB FRONT-END LOSS),

EVM AT P

14

f

12

SENSITIVITY

OFFSET

= 6.37%, WITHOUT JAMMER

=10MHz

Rx EVM vs. V

OUT

(CHANNEL BANDWIDTH = 10MHz,

64 QAM FUSC)

12

LNA = MAX

= -50dBm

P

IN

8

EVM (%)

4

0

-30 -26 -22 -18 -14 -10 -6
V

(dBV

RMS

)

OUT

MAX2839ASWO+T toc10

10

8

EVM (%)

6

4

f

= 20MHz

2

0

-70 -60 -50 -40 -30 -20
P

JAMMER

OFFSET

AT ANTENNA (dBm)

MAX2839ASWO+T toc11

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

12 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

RXINA± DIFFERENTIAL IMPEDANCE

55.8

55.6

55.4

55.2

55.0

REAL COMPONENT (Ω)

54.8

54.6

54.4

2.30 2.502.40 2.602.35 2.552.45 2.65 2.70

Rx INPUT RETURN LOSS vs. FREQUENCY

0

LNA = MAX GAIN

-5

-10

-15

-20

-25

Rx INPUT RETURN LOSS (dB)

-30
LNA = MAX - 16dB

-35

2300 2400 2500 26002350 2450 2550 2650 2700

vs. FREQUENCY

IMAGINARY

FREQUENCY (GHz)

LNA = MAX - 32dB

LNA = MAX - 8dB

FREQUENCY (MHz)

MAX2839ASWO+T toc13

REAL

-100

-105

-110

-115

-120

IMAGINARY COMPONENT (Ω)

-125

-130

MAX2839ASWO+T toc15

RXINB± DIFFERENTIAL IMPEDANCE

53.6

vs. FREQUENCY

53.4

53.2

53.0

52.8

52.6

REAL COMPONENT (Ω)

52.4

52.2

52.0

2.30 2.652.552.452.35 2.70

IMAGINARY

FREQUENCY (GHz)

MAX2839ASWO+T toc14

REAL

2.602.502.40

RSSI VOLTAGE vs. INPUT POWER

2.5

LNA = MAX

2.0
LNA = MAX - 8dB

1.5

1.0

RSSI VOLTAGE (V)

0.5

0

-110 -80 -50 -20 10

LNA = MAX - 16dB

LNA = MAX - 32dB

PIN (dBm)

-100

-105

-110

-115

-120

IMAGIANRY COMPONENT (Ω)

-125

-130

MAX2839ASWO+T toc16

Rx RSSI STEP RESPONSE

(-32dB SIGNAL STEP)

LNA GAIN
CONTROL

RSSI

200ns/div

MAX2839ASWO+T toc18

3V

0V

1.45V

0.45V

Rx RSSI STEP RESPONSE

(+32dB SIGNAL STEP)

LNA GAIN CONTROL

200ns/div

MAX2839ASWO+T toc17

3V

0V

1.45V

RSSI OUTPUT

0.45V

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

______________________________________________________________________________________

13

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Rx LPF GROUP DELAY

vs. FREQUENCY

350

300

250

200

150

100

LPF GROUP DELAY (ns)

50

0

0246810121416

CHANNEL BW = 5MHz

CHANNEL BW = 8MHz

CHANNEL BW = 9MHz

CHANNEL BW = 10MHz

FREQUENCY (MHz)

Rx DC OFFSET SETTLING RESPONSE

2V/div

(-16dB BB VGA GAIN STEP)

0V

0V

VGA GAIN
CONTROL

MAX2839ASWO+T toc22

Rx DC OFFSET SETTLING RESPONSE

(+8dB BB VGA GAIN STEP)

2V/div

0V

MAX2839ASWO+T toc19

0V

5mV/div

VGA GAIN
CONTROL

Rx DC OFFSET SETTLING RESPONSE

(-32dB BB VGA GAIN STEP)

2V/div

0V

0V

VGA GAIN
CONTROL

10µs/div

MAX2839ASWO+T toc20

MAX2839ASWO+T toc23

2V/div

5mV/div

2V/div

Rx DC OFFSET SETTLING RESPONSE

(-8dB BB VGA GAIN STEP)

0V

0V

VGA GAIN
CONTROL

10µs/div

Rx BB VGA SETTLING RESPONSE

(+8dB BB VGA GAIN STEP)

VGA GAIN CONTROL

MAX2839ASWO+T toc21

MAX2839ASWO+T toc24

5mV/div

2V/div

1V/div

10µs/div

Rx BB VGA SETTLING RESPONSE

(-8dB BB VGA GAIN STEP)

VGA GAIN CONTROL

0V

200ns/div

MAX2839ASWO+T toc25

5mV/div

2V/div

1V/div

10µs/div

Rx BB VGA SETTLING RESPONSE

(-16dB BB VGA GAIN STEP)

VGA GAIN CONTROL

0V

200ns/div

MAX2839ASWO+T toc26

1V/div

2V/div

1V/div

0V

200ns/div

Rx BB VGA SETTLING RESPONSE

(-32dB BB VGA GAIN STEP)

VGA GAIN CONTROL

0V

200ns/div

MAX2839ASWO+T toc27

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

14 ______________________________________________________________________________________

)

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Rx LNA SETTLING RESPONSE

(MAX TO MAX - 8dB)

2V/div

LNA GAIN CONTROL

0V

1V/div

200ns/div

10

-10

Rx LNA SETTLING RESPONSE

MAX2839ASWO+T toc28

(MAX TO MAX - 32dB)

2V/div

LNA GAIN CONTROL

0V

1V/div

200ns/div

MAX2839ASWO+T toc29

Rx BB FREQUENCY RESPONSE

CHANNEL BW = 28MHz

0

MAX2839ASWO+T toc30

-20

CHANNEL BW
= 1.5MHz

-30
CHANNEL BW

-40

RESPONSE (dB)

-50

= 5MHz

CHANNEL BW
= 10MHz

-60

-70

0.1 1 10 100
FREQUENCY (MHz

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

______________________________________________________________________________________

15

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Rx BB FREQUENCY RESPONSE

2

1

0

-1

CHANNEL BW
= 1.5MHz

-2

-3

RESPONSE (dB)

CHANNEL BW
= 5MHz

-4

CHANNEL BW

-5

= 10MHz

-6

0.1 1 10 100
FREQUENCY (MHz)

HISTOGRAM: Rx STATIC DC OFFSET

996

MEAN = 0
DEV = 0.23981mV

830

SAMPLE SIZE = 7841

664

498

332

CHANNEL BW
= 28MHz

MAX2839ASWO+T toc31

5V/div

MAX2839ASWO+T toc34

200mV/div

HISTOGRAM: IQ GAIN IMBALANCE

474

395

316

237

158

79

SAMPLE SIZE = 7839

1σ/div

POWER-ON DC OFFSET CANCELLATION

WITH INPUT SIGNAL

ENABLE

0V

MAX2839ASWO+T toc35

MEAN = 0

DEV = 51.8mV

MAX2839ASWO+T toc32

5V/div

0V

10mV/div

HISTOGRAM: Rx PHASE IMBALANCE

774

MEAN = 0
DEV = 0.11878°

645

SAMPLE SIZE = 7841

516

387

258

129

1σ/div

POWER-ON DC OFFSET CANCELLATION

WITHOUT INPUT SIGNAL

ENABLE

MAX2839ASWO+T toc36

I/Q OUTPUT

MAX2839ASWO+T toc33

166

1σ/div

VGA CODE = -36
LNA GAIN = MAX

I/Q OUTPUT

1µs/div

VGA CODE = -36
LNA GAIN = MAX

1µs/div

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

16 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Tx SUPPLY CURRENT vs. SUPPLY VOLTAGE

150

146

142

138

SUPPLY CURRENT (mA)

134

130

2.7 3.0 3.3 3.6

TA = +85°C

TA = +25°C

SUPPLY VOLTAGE (V)

Tx OUTPUT POWER vs. FREQUENCY

(Tx GAIN = MAX - 3dB)

4

3

2

1

(dBm)

0

OUT

P

-1

-2

-3

-4
2300 2350 2400 2450 2500 2550 2600 2650 2700

TA = +85°C

FREQUENCY (MHz)

TA = -40°C

TA = +25°C

TA = -40°C

MAX2839ASWO+T toc37

RESPONSE (dB)

MAX2839ASWO+T toc40

(dBm)

OUT

P

Tx BASEBAND FREQUENCY RESPONSE

10

0

-10

CHANNEL BW

-20
= 1.5MHz

-30
CHANNEL BW
= 5MHz

-40

CHANNEL BW

-50
= 10MHz

-60

-70

0.1 1 10 100
FREQUENCY (MHz)

CHANNEL BW

Tx OUTPUT POWER vs. GAIN SETTING

10

0

-10

-20

-30

TA = +85°C

-40

-50

-60

-70
060503010 20 40

TA = -40°C

TA = +25°C

Tx GAIN CODE

= 28MHz

Tx BASEBAND FREQUENCY RESPONSE

2

MAX2839ASWO+T toc38

-1

-2

-3

RESPONSE (dB)

-4

-5

-6

1

0

CHANNEL BW
= 1.5MHz

CHANNEL BW
= 5MHz

CHANNEL BW
= 10MHz

0.1 1 10 100

CHANNEL BW = 28MHz

FREQUENCY (MHz)

Tx OUTPUT SPECTRUM

(10MHz CHANNEL BANDWIDTH, 16 QAM FUSC)

-70dBr

MAX2839ASWO+T toc41

10dB/div

P

= 0dBm

OUT

0dBr

2.495GHz 2.5GHz 2.555GHz

MAX2839ASWO+T toc39

MAX2839ASWO+T toc42

MASK

Tx OUTPUT SPECTRUM

(10MHz CHANNEL BANDWIDTH, 64 QAM FUSC)

-70dBr
P

= 0dBm

OUT

10dB/div

0dBr

2.495GHz 2.5GHz 2.555GHz

MASK

MAX2839ASWO+T toc43

CARRIER LEAKAGE (dBc)

Tx CARRIER LEAKAGE vs. FREQUENCY

-30

-35

-40

-45

TA = +85°C

-50

-55

-60
2300 2350 2400 2450 2500 2550 2600 2650 2700

TX GAIN SET TO MAX - 3dB

TA = -40°C

TA = +25°C

FREQUENCY (MHz)

MAX2839ASWO+T toc44

Tx CARRIER LEAKAGE vs. GAIN SETTING

-20

-25

-30
TA = +85°C

-35

-40

-45

-50

-55

CARRIER LEAKAGE (dBc)

-60

-65

-70

0 9 18 27 36 45 54 63

TA = +25°C

Tx GAIN CODE

TA = -40°C

MAX2839ASWO+T toc45

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

______________________________________________________________________________________

17

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

Tx SIDEBAND LEVEL vs. FREQUENCY

-30

-35

-40

-45

-50

-55

-60

-65

SIDEBAND LEVEL (dBc)

-70

TA = +25°C

-75

-80
2300 2350 2400 2450 2500 2550 2600 2650 2700

TX GAIN SET TO MAX - 3dB

TA = +85°C

TA = -40°C

FREQUENCY (MHz)

Tx SIDEBAND LEVEL vs. GAIN SETTING

-30

-40

TA = +85°C

MAX2839ASWO+T toc46

-50

-60

SIDEBAND LEVEL (dBc)

-70

-80
0 9 18 27 36 45 54 63

TA = -40°C

Tx GAIN CODE

TA = +25°C

EVM vs. Tx OUTPUT POWER

(64 QAM FUSC, 10MHz CHANNEL BANDWIDTH)

3.0

2.5

MAX2839ASWO+T toc47

2.0

1.5

EVM (%)

1.0

0.5

0

-50 -40 -30 -20 -10 0
P

(dBm)

OUT

MAX2839ASWO+T toc48

Tx OUTPUT EMISSION SPECTRUM

10

0

-10

-20

-30

-40

(dBm)

-50

-60

-70

-80

-90

4/3 x LO

0

2 x LO

3 x LO

4 x LO

5/3 x LO

FREQUENCY (GHz)

Tx OUTPUT RETURN LOSS

vs. FREQUENCY

4

2

0

-2

-4

-6

-8

-10

OUTPUT RETURN LOSS (dB)

-12

-14

-16
2300 2400 2500 2600 2700

FREQUENCY (MHz)

MAX2839ASWO+T toc49

26.5

MAX2839ASWO+T toc52

372

MEAN = -46.235dBc
DEV = 5.1577dB

310

SAMPLE SIZE = 7841

248

186

124

62

1σ/div

Tx MAX OUTPUT POWER OVER FREQUENCY

HISTOGRAM: Tx LO LEAKAGE

6.00

5.00

4.00

(dBm)

3.00

OUT

P

2.00

1.00

TA = -40°C

64QAM OFDM SIGNAL CONFORMING
TO SPECTRAL EMISSION MASK AND

-35dB EVM AFTER I/Q IMBALANCE
CALIBRATION BY MODEM

TA = +25°C

0

2.30 2.45 2.602.35 2.50 2.702.40 2.55 2.65

TA = +85°C

FREQUENCY (GHz)

504

420

MAX2839ASWO+T toc50

336

252

168

84

2.8

2.7

2.6

MAX2839ASWO+T toc53

2.5

2.4

LO FREQUENCY (GHz)

2.3

2.2

2.1

HISTOGRAM: Tx SIDEBAND SUPPRESSION

MEAN = -47.856dBc
DEV = 2.8827dB
SAMPLE SIZE = 7841

1σ/div

LO FREQUENCY vs.

DIFFERENTIAL TUNE VOLTAGE

-1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5
DIFFERENTIAL TUNE VOLTAGE (V)

MAX2839ASWO+T toc51

MAX2839ASWO+T toc54

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

18 ______________________________________________________________________________________

µ

µ

Typical Operating Characteristics (continued)

(V

CC_

= 2.8V, TA = +25°C, fLO= 2.5GHz, f

REF

= 40MHz, CS = high, RXHP = SCLK = DIN = low, RF BW = 10MHz, Tx output at 50Ω

unbalanced output of balun, using the MAX2839AS Evaluation Kit.)

PHASE NOISE vs. OFFSET FREQUENCY

-50

-60

-70

-80

-90

-100

-110

-120

PHASE NOISE (dBc/Hz)

-130

-140

-150

0.0001 0.001 0.01

OFFSET FREQUENCY (MHz)

0.1 1 10

CHANNEL-SWITCHING FREQUENCY SETTLING

(2.7GHz TO 2.3GHz,

AUTOMATIC VCO SUB-BAND SELECTION)

100kHz

VCO GAIN vs. DIFFERENTIAL TUNE VOLTAGE

80

MAX2839ASWO+T toc55

60

40

VCO GAIN (MHz/V)

20

0

-1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5
DIFFERENTIAL TUNE VOLTAGE (V)

CHANNEL-SWITCHING FREQUENCY SETTLING

(2.3GHz TO 2.7GHz,

MANUAL VCO SUB-BAND SELECTION)

100kHz

CHANNEL-SWITCHING FREQUENCY SETTLING

(2.3GHz TO 2.7GHz,

AUTOMATIC VCO SUB-BAND SELECTION)

100kHz

MAX2839ASWO+T toc56

20kHz/div

-100kHz

0

TIME (ms)

CHANNEL-SWITCHING FREQUENCY SETTLING

(2.7GHz TO 2.3GHz,

MANUAL VCO SUB-BAND SELECTION)

100kHz

MAX2839ASWO+T toc57

1.498

20kHz/div

-100kHz

MAX2839ASWO+T toc58

20kHz/div

100kHz

0

TIME (ms)

1.498

0

TIME (µs)

Tx-TO-Rx TURNAROUND FREQUENCY

GLITCH SETTLING

2V/div

10kHz/div

FREQUENCY ERROR

1

MAX2839ASWO+T toc61

Tx TO Rx SWITCHING

10kHz/div

s/div

MAX2839ASWO+T toc59

20kHz/div

-100kHz

199.89

0

Rx-TO-Tx TURNAROUND FREQUENCY

GLITCHING SETTLING

2V/div

FREQUENCY ERROR

1µs/div

TIME (

MAX2839ASWO+T toc62

Rx TO Tx SWITCHING

s)

MAX2839ASWO+T toc60

199.89

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 19

Bump Description

BUMP NAME FUNCTION

1 GNDRXLNA_A Receiver A LNA Ground

2V

3V

4 GND_LNA_B Receiver B LNA Ground

5 RXINB+ Receiver B LNA Differential Input Plus. Input is internally DC-coupled.

6 GND_MXR_B Receiver B Mixer Ground

7 B2 Receiver and Transmitter Gain-Control Logic Input Bit 2

8 B3 Receiver and Transmitter Gain-Control Logic Input Bit 3

9 B4 Receiver and Transmitter Gain-Control Logic Input Bit 4

10 V

11 GND1_PAD_RF Transmit Power Amplifier Driver Ground

12 GND2_PAD_RF Transmit Power Amplifier Driver Ground

13 PABIAS Transmit External Power Amplifier Bias DAC Output

14 GND_TXMX Transmit Upconverter Ground

15 SCLK Serial-Clock Logic Input of 4-Wire Serial Interface

16 REFCLK Reference Clock Input. AC-couple a reference clock to this analog input.

17 V

18 V

19 GNDCP Charge-Pump Ground

20 CPOUT+

21 GNDVCO VCO Ground

22 VCOBYP

23 V

24 GND_LO Local Oscillator Generation Ground
25 CS Active-Low Chip-Select Logic Input of 4-Wire Serial Interface

26 GND_RXBB_B Receiver B Baseband Ground

27 RXBBIB+ Receiver B Baseband I-Channel Differential Output Plus

28 RXBBQB+ Receiver B Baseband Q-Channel Differential Output Plus

29 B6 Receiver and Transmitter Gain-Control Logic Input Bit 6

30 RXBBQA- Receiver A Baseband Q-Channel Differential Output Minus

31 RXBBQA+ Receiver A Baseband Q-Channel Differential Output Plus

32 V

33 GND_RXBB_A Receiver A Baseband Ground

34 GND_RXLOGEN Receiver Divide-by-2 Ground

35 GND_MXR_A Receiver A Mixer Ground

36 GND_LNA_A Receiver A LNA Ground

37 TXBBQ- Transmitter Baseband Q-Channel Differential Input Minus

38 CLKOUT_DIV Clockout Divide Ratio Select Logic Input

CCRXLNA_A

CCRXLNA_B

CCTXPAD

CCXTAL

CCCP

CCVCO

CCRXVGA

Receiver A LNA Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin.

Receiver B LNA Supply Voltage. Bypass with a 22pF capacitor as close as possible to the pin.

Supply Voltage for Transmitter Power Amplifier Driver. Bypass with a 22pF capacitor as close as
possible to the pin.

Crystal Oscillator Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin.

PLL Charge-Pump Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin.

Differential Charge-Pump Output Plus. Connect the frequency synthesizer’s loop filter between
CPOUT+ and CPOUT- (see the Typical Operating Circuit).

On-Chip VCO Regulator Output Bypass. Bypass with a 1µF capacitor to GND. Do not connect other
circuitry to this point.

VCO Supply Voltage. Bypass with a 22nF capacitor as close as possible to the pin.

Receiver VGA Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin.

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

20 ______________________________________________________________________________________

Bump Description (continued)

BUMP NAME FUNCTION

39 GNDRXLNA_B Receiver B LNA Ground

40 RXINB- Receiver B LNA Differential Input Minus. Input is internally DC-coupled.

41 TXRX Transmit/Receive Mode Enable Logic Input

42 B5 Receiver and Transmitter Gain-Control Logic Input Bit 5

43 TXOUT+ Power Amplifier Driver Differential Output Plus. The pin is biased at VCC/2 internally.

44 B1 Receiver and Transmitter Gain-Control Logic Input Bit 1

45 TXOUT- Power Amplifier Driver Differential Output Minus. The pin is biased at VCC/2 internally.

46 V

47 CLKOUT Reference Clock Buffer Output

48 GND_XTAL Crystal Oscillator Ground

49 GND_DIG PLL Digital Ground

50 V

51 CPOUT-

52, 67 GND Ground. Connect to the PCB ground plane.

53 DIN Data Logic Input of 4-Wire Serial Interface

54 GND_PAD_BIAS Transmit Bias Ground

55 XTAL1 XTAL Input. AC-couple crystal to this analog pin.

56 RXHP Receiver I- and Q-Channel AC-Coupling Highpass Corner Frequency Selection Logic Input

57 RXBBIA- Receiver A Baseband I-Channel Differential Output Minus

58 RXBBIA+ Receiver A Baseband I-Channel Differential Output Plus

59 TXBBI+ Transmitter Baseband I-Channel Differential Input Plus

60 TXBBQ+ Transmitter Baseband Q-Channel Differential Input Plus

61 V

62 RXINA- Receiver A LNA Differential Input Minus. Input is internally DC-coupled.

63 RXINA+ Receiver A LNA Differential Input Plus. Input is internally DC-coupled.

64 B0 Receiver and Transmitter Gain-Control Logic Input Bit 0

65 ENABLE Transceiver Enable Logic Input

66 DOUT Data Logic Output of 4-Wire Serial Interface

68 RXBBIB- Receiver B Baseband I-Channel Differential Output Minus

69 RXBBQB- Receiver B Baseband Q-Channel Differential Output Minus

70 RSSI Receiver Signal Strength Output

71 B7 Receiver Gain-Control Logic Input Bit 7

72 V

73 TXBBI- Transmitter Baseband I-Channel Differential Input Minus

CCTXMX

CC_DIG

CCRXMX

CCRXFL

Transmitter Upconverter Supply Voltage. Bypass with a 22pF capacitor as close as possible to the
pin.

PLL Digital Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin.

Differential Charge-Pump Output Minus. Connect the frequency synthesizer’s loop filter between
CPOUT+ and CPOUT- (see the Typical Operating Circuit).

Receiver Downconverters Supply Voltage. Bypass with a 22pF capacitor as close as possible to the
pin.

Receiver Baseband Filter Supply Voltage. Bypass with a 100nF capacitor as close as possible to
the pin.

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 21

Detailed Description

Modes of Operation

The modes of operation for the MAX2839AS are shut­down, clock-out only, standby, receive, transmit, trans­mitter calibration, and receiver calibration. See Table 1
for a summary of the modes of operation. When the
parts are active, various blocks can be shutdown indi­vidually by programming different SPI registers.

Shutdown Mode

The MAX2839AS features a low-power shutdown mode.
In shutdown mode, all circuit blocks are powered down,
except the 4-wire serial bus and its internal programma­ble registers.

Clock-Out Only

In clock-out mode, the entire transceiver is off except
the divided reference clock output on the CLKOUT pin
and the clock divider, which remain on.

Standby Mode

The standby mode is used to enable the frequency
synthesizer block while the rest of the device is pow­ered down. In this mode, the PLL, VCO, and LO gener-

ator are on so that Tx or Rx modes can be quickly
enabled from this mode. These and other blocks can
be selectively enabled in this mode by programming
different SPI registers.

Receive (Rx) Mode

In receive mode, all Rx circuit blocks are powered on
and active. Antenna signal is applied; RF is downcon­verted, filtered, and buffered at Rx BB I and Q outputs.
Either receiver A or both receivers can be enabled.
Receiver B cannot be enabled by itself.

Transmit (Tx) Mode

In transmit mode, all Tx circuit blocks are powered on.
The external PA is powered on after a programmable
delay using the on-chip PA bias DAC.

Transmitter (Tx) Calibration Mode

All Tx circuit blocks except PA driver and external PA
are powered on and active. The AM detector and
receiver I/Q channel buffers are also on, along with
multiplexers in the receiver side to route this AM detec­tor’s signal to each I and Q differential outputs. When
required, the I/Q lowpass filter can be bypassed.

Table 1. Operating Mode

MODE CONTROL LOGIC INPUTS CIRCUIT BLOCK STATES

MODE

Shutdown 0 0 X XX Off Off Off None Off

Clock-Out Only 1 X X X0 Off Off Off None On

Clock-Out Only X 1 X X0 Off Off Off None On

Standby 0 1 X 01 Off Off On or Off None On

Rx (1x2 MIMO) 1 1 1 01 On Off On None On

Rx (1x1 SISO) 1 1 0 01 On (RX_A) Off On None On

Tx 1 0 X 01 Off On On None On

Tx Calibration 1 0 X 11 Off

RX_A
Calibration
(Loopback)

RX_B
Calibration
(Loopback)

ENABLE

PIN

TXRX

PIN

11011

11111

SPI

REG1

D<3>

SPI

REG16

D<1:0>

Rx PATH Tx PATH

On (except

PA driver)OnSPI REG7D<7> = 1

On

(except

LNA)

On

(except

LNA)

On (except

PA driver)OnS P I RE G26D < 3> = 1

On (except

PA driver)OnS P I RE G26D < 3> = 1

PLL, VCO, LO

GEN

CALIBRATION
SECTIONS ON

AM detector + Rx

I, Q buffers

Loopback On

Loopback On

CLOCK

O U T PU T

On

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

22 ______________________________________________________________________________________

Receiver (Rx) Calibration or Loopback

Part of the Rx and Tx circuit blocks except LNA and PA
driver are powered on and active. The transmitter I/Q
input signals are upconverted to RF, and the output of
the Tx gain control block (VGA) is fed to the receiver at
the input of the downconverter. Either receiver A or
both receivers can be connected to the transmitter and
powered on. The I/Q lowpass filters are not present in
the transmitter signal path (they are bypassed).

Programmable Registers

and 4-Wire SPI Interface

The MAX2839AS includes 32 programmable 16-bit reg­isters. The most significant bit (MSB) is the read/write
selection bit. The next 5 bits are register address. The

10 least significant bits (LSBs) are register data.
Register data is loaded through the 4-wire
SPI/MICROWIRE™-compatible serial interface. Data at
DIN is shifted in MSB first and is framed by CS. When
CS is low, the clock is active, and input data is shifted
at the rising edge of the clock. During the read mode,
register data selected by address bits is shifted out to
DOUT at the falling edges of the clock. At the CS rising
edge, the 10-bit data bits are latched into the register
selected by address bits. See Figure 1. The register
values are preserved in shutdown mode as long as the
power-supply voltage is maintained. After power-up,
the user must program all register values.

Figure 1. 4-Wire SPI Serial-Interface Timing Diagram

MICROWIRE is a trademark of National Semiconductor Corp.

DOUT

DIN

SCLK

BIT 1

BIT 2

DON'T CARE

BIT 6

BIT 14 BIT 13 BIT 5

t

CH

t

CS

DOUT

DIN

SCLK

CS

t

t

CSS

CSO

BIT 1

DS

BIT 2

t

DH

DON'T CARE

SPI REGISTER WRITE

BIT 5

SPI REGISTER READ

t

CL

t

BIT 6

t

D

BIT 13

DON'T CARE

CSH

t

CSW

BIT 14

t

CS1

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 23

SPI Register Definitions

(All values in the register definition table are typical numbers. The MAX2839AS SPI does not have a power-on-default feature; the
user must program all SPI addresses for normal operation. Prior to use of any untested settings, contact the factory.)

Table 2. MAX2839AS Register Summary

REGISTER NO.

FUNCTIONS

0 RX_ENABLE 000 Reserved for internal use

1 RX_RF_1 00C

• LNA band select, MIMO mode select

• Rx I/Q phase error correction

2 RX_RF_2 081

• LNA gain SPI control enable

• Rx I/Q phase error SPI control enable

3 RX_RF/LPF 1B9 Reserved for internal use

4 LPF 3E6 • RF channel bandwidth select

5 LPF/VGA_1 100

• RX_A LNA and VGA gain controls

• LPF operating mode select

6 LPF/VGA_2 000

• RX_B LNA and VGA gain controls

• Rx VGA common-mode select

7 RSSI/VGA 208

• RSSI pin output select, operating mode as a function of RXHP, and receiver
select

• Rx baseband outputs routing select

8 RX_TOP_SPI_1 222

• Rx VGA gain SPI control enable

• LPF operating mode select enable

9 RX_TOP_SPI_2 018

• Temperature sensor enable, and ADC readout trigger

• DOUT output selection, drive select, three-state output select

10 TX_TOP_ SPI 00C • Tx AM detector gain and filter bandwidth controls

11 TEMP_SEN 004 • Temperature sensor ADC readout

12 HPFSM 1 24F

• 10MHz HPC duration select when triggered by RXEN or LNA gain

• 600kHz HPC duration select when triggered by RXEN or LNA gain

13 HPFSM 2 150

• 100kHz HPC duration select when triggered by RXEN or LNA gain

• 30kHz HPC duration select when triggered by RXEN or LNA gain

• 1kHz HPC duration select when triggered by RXEN

14 HPFSM 3 3C5

• 1kHz HPC duration select when triggered by LNA gain

• HPC rising edge delay and final highpass corner select

• HPC on-hold corner select as a function of RXHP

• HPC state machine retriggered by LNA gain enable

15 HPFSM 4 201

• HPC state machine clock divider, sequence bypass, and RXHP dependent
select

16 BLK_SPI_EN 01C • Block enabled by SPI

17 FRAC_DIV_1 155 • Last 10 of 20 fractional divider bits

18 FRAC_DIV_2 155 • First 10 of 20 fractional divider bits

19 INT_DIV 153

• Integer divider bits

• LO generation band select

20

249

• Reference divider ratio

• CLKOUT buffer drive select

21

02D Reserved for internal use

REGISTER NAME DEFAULT

SYNTH_CONFIG_1

SYNTH_CONFIG_2

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

24 ______________________________________________________________________________________

Table 2. MAX2839AS Register Summary (continued)

REGISTER NO.

FUNCTIONS

22 VAS_CONFIG 1A9

• VAS operating mode select, relock location, clock divide ratio, delay counter

ratio, and triggering

23

24F

• VAS sub-band SPI overwrite

• Crystal oscillator bias select

24 XTAL_CONFIG 180 • Crystal oscillator core enable, and frequency tuning

25 VCO_CONFIG 000 Reserved for internal use

26

3C0

• VAS test signal select

• VTUNE test signal select

• LOGEN G

m

enable

27

280

• Tx LO I/Q phase adjustment by SPI enable, and phase adjustment select

• Tx DC correction by SPI enable

• Tx VGA gain control by SPI enable

28 PA_BIAS_ DAC 0C0 • PA DAC output current select, and turn-on delay control

29

03F • Tx VGA gain control

30

380

• Tx DC offset correction for I-channel

• PA DAC output type select, and voltage mode output select

31

340

• Tx DC offset correction for Q-channel

• PA DAC clock-divide ratio

ADDRESS BITS DATA BITS

REGISTER NAME

D0

RX_ENABLE 0 0 0 000000000000

RX_RF_1 0 0 0 010000001100

RX_RF_2 0 0 0 100010000001

RX_RF/LPF 0 0 0 110110111001

LPF 001001111100110

LPF/VGA_1 0 0 1 010100000000

LPF/VGA_2 0 0 1 100000000000

RSSI/VGA 0 0 1 111000001000

RX_TOP_SPI_1 0 1 0 001000100010

RX_TOP_SPI_2 0 1 0 010000011000

TX_TOP_ SPI 0 1 0 100000001100

TEMP_SEN 0 1 0 110000000100

HPFSM 1 0 1 1 001001001111

HPFSM 2 0 1 1 010101010000

HPFSM 3 0 1 1 101111000101

HPFSM 4 0 1 1 111000000001

BLK_SPI_EN 1 0 0 000000011100

FRAC_DIV_1 1 0 0 010101010101

FRAC_DIV_2 1 0 0 100101010101

INT_DIV 1 0 0 110101010011

REGISTER NAME DEFAULT

LO_MISC_CONFIG

LOGEN_CONFIG

TXLO_I/Q_CONFIG

TX_GAIN_CONFIG

TX_DC CORR_1

TX_DC_CORR_2

A4 A3 A2 A1 A0 D9 D8 D7 D6 D5 D4 D3 D2 D1

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 25

Table 2. MAX2839AS Register Summary (continued)

ADDRESS BITS DATA BITS

REGISTER NAME

D0

SYNTH_CONFIG_1 1 0 1 001001001001

SYNTH_CONFIG_2 1 0 1 010000101101

VAS_CONFIG 1 0 1 100110101001

LO_MISC_CONFIG 1 0 1 111001001111

XTAL_CONFIG 1 1 0 000110000000

VCO_CONFIG 1 1 0 010000000000

LOGEN_CONFIG 1 1 0 101111000000

TXLO_I/Q_CONFIG 1 1 0 111010000000

PA_BIAS_ DAC 1 1 1 000011000000

TX_GAIN_CONFIG 1 1 1 010000111111

TX_DC CORR_1 1 1 1 101110000000

TX_DC_CORR_2 1 1 1 111101000000

Table 3. Register 0: RX_ENABLE Register (Address = 00000, Default = 000

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0 Reserved bits—set to default

Table 4. Register 1: RX_RF_1 Register (Address = 00001, Default = 00C

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:4 Reserved bits—set to default

MIMO_MODE_SEL 3

MIMO mode selection.
0 = RX_A
1 = RX_A + RX_B (default)

RESERVED 2:1 Reserved bits—set to default

LNA_BAND 0

LNA output LC tank center frequency select.
0 = 2.3GHz to 2.5GHz (default)
1 = 2.5GHz to 2.7GHz

Table 5. Register 2: RX_RF_2 Register (Address = 00010, Default = 081

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:1 Reserved bits—set to default

LNA_GAIN_SPI_EN 0

LNA gain control select.
0 = LNA gain controlled by external pins B7 and B6
1 = LNA gain controlled by SPI through register 6 bits 1:0 (default)

A4 A3 A2 A1 A0 D9 D8 D7 D6 D5 D4 D3 D2 D1

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

26 ______________________________________________________________________________________

Table 6. Register 3: RX_RF/LPF Register (Address = 00011, Default = 1B9

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0 Reserved bits—set to default

Table 7. Register 4: LPF Register (Address = 00100, Default = 3E6

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

FT<3:0> 9:6

RF channel bandwidth select.
Test at RFBW 5MHz, 10MHz, and 28MHz.
0000 = 1.75MHz
0001 = 2.5MHz
0010 = 3.5MHz
0011 = 5.0MHz
0100 = 5.5MHz
0101 = 6.0MHz
0110 = 7.0MHz
0111 = 8.0MHz
1000 = 9.0MHz
1001 = 10.0MHz
1010 = 12.0MHz
1011 = 14.0MHz
1100 = 15.0MHz
1101 = 20.0MHz
1110 = 24.0MHz
1111 = 28.0MHz (default)

RESERVED 5:0 Reserved bits—set to default

Table 8. Register 5: LPF/VGA_1 Register (Address = 00101, Default = 100

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:8 Reserved bits—set to default

VGA1<5:0> 7:2

Receiver 1 VGA attenuation settings through SPI.
Active when register 8 D<1> = 1.
000000 = Max gain (default)
000001 = Max - 1dB
……….
111110 = Max - 62dB
111111 = Max - 63dB (min gain)
Test at settings 000000, 000001, 001000, 010000, 100000, 110110, and

111111.

LNA1<1:0> 1:0

Receiver 1 LNA gain settings through SPI.
Active when register 2 D<0> = 1.
00 = Max gain (default)
01 = Max - 8dB
10 = Max - 16dB
11 = Max - 32dB

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 27

Table 9. Register 6: LPF/VGA_2 Register (Address = 00110, Default = 000

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

BUFF_VCM<1:0> 9:8

Rx VGA output common-mode voltage select.
00 = 1.05V (default)
01 = 1.15V
10 = 1.25V
11 = 1.45V

VGA2<5:0> 7:2

Receiver 2 VGA attenuation settings through SPI.
Active when register 8 D<1> = 1.
000000 = Max gain (default)
000001 = Max - 1dB
……….
111110 = Max - 62dB
111111 = Max - 63dB (min gain)
Test at settings 000000, 000001, 001000, 010000, 100000, 110110, and

111111.

LNA2<1:0> 1:0

Receiver 2 LNA gain settings through SPI.
Active when register 2 D<0> = 1.
00 = Max gain (default)
01 = Max - 8dB
10 = Max - 16dB
11 = Max - 32dB

Table 10. Register 7: RSSI/VGA Register (Address = 00111, Default = 208

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RSSI_RXSEL 9

RSSI for receiver 1 or 2 select.
0 = RSSI for receiver 2
1 = RSSI for receiver 1 (default)

RESERVED 8 Reserved bits—set to default

SEL_IN1_IN2 7

RXBBI output select.
0 = Select Rx VGA output (default)
1 = Select Tx AM detector output

RESERVED 6:0 Reserved bits—set to default

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

28 ______________________________________________________________________________________

Table 11. Register 8: RX_TOP_SPI_1 Register (Address = 01000, Default = 222

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:3 Reserved bits—set to default

LPF_MODE_SEL 2

LPF operating mode select.
0 = LPF response changes automatically between Tx and Rx by TXRX pin
(default)
1 = LPF response fixed in Tx, Rx, calibration, or trim mode as defined in
register 5 D<9:8>

VGA_GAIN _SPI_EN 1

Rx VGA gain control through SPI.
0 = Rx VGA gain controlled by external pins B5:B1
1 = Rx VGA gain controlled by SPI (default)

RESERVED 0 Reserved bits—set to default

Table 13. Register 10: TX_TOP_SPI Register (Address = 01010, Default = 00C

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:2 Reserved bits—set to default

TXCAL_GAIN<1:0> 1:0

Transmit AM detector baseband gain control select.
00 = Minimum gain (default)
01 = +10dB
10 = +20dB
11 = +30dB

Table 12. Register 9: RX_TOP_SPI_2 Register (Address = 01001, Default = 018

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:8 Reserved bits—set to default

DOUT_SEL<2:0> 7:5

DOUT pin multiplexed output select.
000 = SPI register (default)
001 = PLL lock detect. Set register 21 D<9:7> = 000 for lock-detect out.
010 = VAS and VTUNE outputs defined by register 26 D<9:6>

DOUT_CSB_SEL 4

DOUT pin three-state control.
0 = DOUT pin is independent of CSB pin
1 = DOUT pin is in three-state mode when CSB is high (default)

DOUT_DRVH 3

DOUT pin output drive select.
0 = 1x drive. Delay < 4.4ns.
1 = 4x drive. Delay < 3.1ns (default).

RESERVED 2 Reserved bits—set to default

TS_EN 1

Temperature sensor comparator and clock enable.
0 = Disabled (default)
1 = Enabled

TS_ADC_TRIG 0

Temperature sensor ADC trigger.
0 = Not trigger ADC readout (default)
1 = Trigger ADC readout. ADC is disabled automatically after readout
finishes.

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 29

Table 14. Register 11: TEMP_SEN Register (Address = 01011, Default = 004

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0

Reserved bits—set to default.
Readout at DOUT pin through SPI A[4:0] = 01011, D[4:0]

Table 15. Register 12: HPFSM 1 Register (Address = 01100, Default = 24F

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

HPC_600k_GAIN<2:0> 9:7

Rx VGA highpass corner duration at 600kHz. Triggered by LNA gain
change. Test at settings 000, 001, and 011.
000 = 0µs
001 = 0.8µs
010 = 1.6µs
011 = 2.4µs
100 = 3.2µs (default)
101 = 4.0µs
110 = 4.8µs
111 = stay “1”

HPC_600k<2:0> 6:4

Rx VGA highpass corner duration at 600kHz. Triggered by RXEN rising
edge. Test at settings 000, 100, and 110.
000 = 0µs
001 = 0.8µs
010 = 1.6µs
011 = 2.4µs
100 = 3.2µs (default)
101 = 4.0µs
110 = 4.8µs
111 = stay “1”

HPC_10M_GAIN<1:0> 3:2

Rx VGA highpass corner duration at 10MHz. Triggered by LNA gain
change. Test at settings 00, 01, and 11.
00 = 0µs
01 = 0.4µs
10 = 0.8µs
11 = 1.2µs (default)

HPC_10M<1:0> 1:0

Rx VGA highpass corner duration 10MHz. Triggered by RXEN rising edge.
Test at settings 00 and 11.
00 = 0µs
01 = 0.4µs
10 = 0.8µs
11 = 1.2µs (default)

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

30 ______________________________________________________________________________________

Table 16. Register 13: HPFSM 2 Register (Address = 01101, Default = 150

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

HPC_1k<1:0> 9:8

Rx VGA highpass corner duration at 1kHz. Triggered by RXEN rising edge.
Test at settings 00, 01, and 11.
00 = 0µs
01 = 3.2µs (default)
10 = 6.4µs
11 = 9.6µs

HPC_30k_GAIN<1:0> 7:6

Rx VGA highpass corner duration at 30kHz. Triggered by LNA gain change.
Test at settings 00 and 01.
00 = 0µs
01 = 3.2µs (default)
10 = 6.4µs
11 = 9.6µs

HPC_30k<1:0> 5:4

Rx VGA highpass corner duration at 30kHz. Triggered by RXEN rising edge.
Test at settings 00, 01, and 10.
00 = 0µs
01 = 3.2µs (default)
10 = 6.4µs
11 = 9.6µs

HPC_100k_GAIN<1:0> 3:2

Rx VGA highpass corner duration at 100kHz. Triggered by LNA gain
change. Test at settings 00 and 11.
00 = 0µs (default)
01 = 3.2µs
10 = 6.4µs
11 = 9.6µs

HPC_100k<1:0> 1:0

Rx VGA highpass corner duration at 100kHz. Triggered by RXEN rising
edge. Test at settings 00, 01, and 11.
00 = 0µs (default)
01 = 3.2µs
10 = 6.4µs
11 = 9.6µs

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 31

Table 17. Register 14: HPFSM 3 Register (Address = 01110, Default = 3C5

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

TXGATE_EN 9

PA driver and DAC on/off state gated by PLL lock detect.
0 = Independent of PLL lock detect
1 = Disable PA driver when PLL lock detect = 0 (default)

RESERVED 8 Reserved bits—set to default

HPC_STOP_M2<1:0> 7:6

Rx VGA on-hold highpass corner when RXHP = 1. Test at settings 00, 01, and

11. Only active when Reg15_D9 = 1.
00 = 1kHz
01 = 30kHz
10 = 100kHz
11 = 600kHz (default)

HPC_STOP<1:0> 5:4

Rx VGA final highpass corner selection. Test at settings 00, 01, and 11.
00 = 100Hz (default)
01 = 1kHz
10 = 30kHz
11 = 100kHz

HPC_DELAY<1:0> 3:2

Rx VGA HPC

A

and HPCD rising edge delay for 100k, 30k, 1k, and 100Hz
highpass corner. Test at settings 00, 01, and 11.
00 = 0µs
01 = 0.2µs (default)
10 = 0.4µs
11 = 0.6µs

HPC_1k_GAIN<1:0> 1:0

Rx VGA highpass corner duration at 1kHz. Triggered by LNA gain change.
Test at settings 00, 01, and 10.
00 = 0µs
01 = 3.2µs (default)
10 = 6.4µs
11 = 9.6µs

Table 18. Register 15: HPFSM 4 Register (Address = 01111, Default = 201

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

HP_MODE 9

Highpass corner control using RXHP.
0 = Highpass corner switches automatically without RXHP
1 = Highpass corner switches dependent on RXHP (default)

RESERVED 8:7 Reserved bits—set to default

HPC_SEQ_BYP 6

Highpass corner switching sequence bypassed during RXHP transition from
1 to 0.
0 = Start switching from highpass corner set by HPC_STOP_M2<1:0> in
register 14 and continue with programmed sequence (default)
1 = Switch from highpass corner set by HPC_STOP_M2<1:0> directly to
final highpass corner set by HPC_STOP<1:0> in register 14.

RESERVED 5:0 Reserved bits—set to default

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

32 ______________________________________________________________________________________

Table 19. Register 16: BLK_SPI_EN Register (Address = 10000, Default = 01C

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:8 Reserved bits—set to default

PADAC_TX_EN 7

PA bias DAC Tx mode enable bit. Enables PA bias DAC only in Tx mode.
Turn-on delay is controlled by bits 9:6 of register 28.
0 = Disabled (default)
1 = Enabled when TXRX = 0

PADAC_SPI_EN 6

PA bias DAC SPI enable bit. Turn-on delay is controlled by bits 9:6 of
register 28.
0 = Disabled (default)
1 = Enabled in all modes except for shutdown

RESERVED 5:2 Reserved bits—set to default

CAL_SPI 1

Receive and transmit calibration mode enable bit. Rx or Tx calibration mode
is selected by TXRX pin.
0 = Normal receive or transmit mode (default)
1 = Calibration mode

EN_SPI 0

Transceiver enable bit.
0 = Disabled (default)
1 = Enabled. Enable pin must also be 1 to turn on transceiver.

Table 20. Register 17: FRAC_DIV_1 Register (Address = 10001, Default = 155

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

SYN_CONFIG0<9:0> 9:0

Bits 9:0 of the 20-bit fractional divide ratio. The remaining bits 19:10 reside
in register 18. Both registers are combined to form the 20-bit fractional word.
Program register 17 to engage the stored values of registers 18 and 19.

Table 21. Register 18: FRAC_DIV_2 Register (Address = 10010, Default = 155

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

SYN_CONFIG0<19:10> 9:0

Bits 19:10 of the 20-bit fractional divide ratio. The remaining bits 9:0 reside
in register 17. Both registers are combined to form the 20-bit fractional word.
Program register 18 before register 17.

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 33

Table 22. Register 19: INT_DIV Register (Address = 10011, Default = 153

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

LOGEN_BSW<1:0> 9:8

LO generation band switch control for optimal transmit spur.
00 = 2300MHz to 2399.99MHz
01 = 2400MHz to 2499.99MHz (default)
10 = 2500MHz to 2599.99MHz
11 = 2600MHz to 2700MHz

SYN_CONFIG1<7:0> 7:0

Synthesizer 8-bit integer divide ratio.
Program register 19 before register 17. Test at settings between 76 and 90
to support LO frequency between 2300MHz and 2700MHz.

Table 23. Register 20: SYNTH_CONFIG_1 Register (Address = 10100, Default = 249

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:6 Reserved bits—set to default

CLKOUT_DRV 5

Reference clock output buffer drive selection.
0 = 1x drive (default)
1 = 4x drive

RESERVED 4:3 Reserved bits—set to default

SYN_CONFIG1<1:0> 2:1

Reference divide ratio selection.
00 = Divide by 1 (default)
01 = Divide by 2
10 = Divide by 4

RESERVED 0 Reserved bit—set to default

Table 24. Register 21: SYNTH_CONFIG_2 Register (Address = 10101, Default = 02D

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0 Reserved bits—set to default

Table 25. Register 22: VAS_CONFIG Register (Address = 10110, Default = 1A9

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:1 Reserved bits—set to default

VAS_MODE 0

VCO autoselect (VAS) operating mode selection.
0 = Manually select VCO sub-band by SPI register 23 D[4:0]
1 = Select VCO sub-band automatically by VAS (default)

BIT LOCATION

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

34 ______________________________________________________________________________________

Table 26. Register 23: LO_ MISC_CONFIG Register (Address = 10111, Default = 24F

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:5 Reserved bits—set to default

VAS_SPI<4:0> 4:0

VCO autoselect (VAS) sub-band SPI overwrite.
Active when register 22 D0 = 0.
00000 = Minimum frequency - sub-band 0
00001 = Sub-band 1
………
01111 = Sub-band 15 (default)
………
11110 = Sub band 30
11111 = Maximum frequency - sub-band 31

Table 27. Register 24: XTAL_CONFIG Register (Address = 11000, Default = 180

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:7 Reserved bits—set to default

XTAL<6:0> 6:0

Crystal oscillator frequency tuning.
0000000 = Minimum frequency tuning (default)
………….
1111111 = Maximum frequency tuning

Table 28. Register 25: VCO_CONFIG Register (Address = 11001, Default = 000

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0 Reserved bits—set to default

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 35

Table 29. Register 26: LOGEN_CONFIG Register (Address = 11010, Default = 3C0

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

VAS_TST<3:0> 9:6

VCO autoselect (VAS) sub-band and VCO tune voltage test signal output
sel ect. Resul ts ar e d el i ver ed to D OU T p i n b y setti ng r eg i ster 9 D < 7:5> = 010.

V C O _BS W< 4:0> = 5 V C O sub - b and b i ts r ep r esenti ng sub - b and num b er 0 to 31.

0000 = VCO_BSW<0>
0001 = VCO_BSW<1>
0010 = VCO_BSW<2>
0011 = VCO_BSW<3>
0100 = VCO_BSW<4>
VTUNE_ADC<2:0> = 3-bit ADC output representing VCO tune voltage.
0101 = VTUNE_ADC<0>
0110 = VTUNE_ADC<1>
0111 = VTUNE_ADC<2>
1111 = 0 (default)

RESERVED 5:4 Reserved bits—set to default

LOGEN_2GM 3

LO generation G

m

enable.
0 = Function of TXRX and ENABLE pins (default)
1 = Enable both Rx/Tx output (required for Rx loopback calibration)

RESERVED 2:0 Reserved bits—set to default

Table 30. Register 27: TXLO_I/Q_CONFIG Register (Address = 11011, Default = 280

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:8 Reserved bits—set to default

TXVGA_GAIN_SPI_EN 7

Transmit VGA gain control through SPI enable bit.
0 = Tx VGA gain control by pins B6:B1.
1 = Tx VGA gain control by register 29 D[5:0] (default)

RESERVED 6:0 Reserved bits—set to default

Table 31. Register 28: PA_BIAS_DAC Register (Address = 11100, Default = 0C0

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

PADAC_DLY<3:0> 9:6

PA bias DAC turn-on delay control.
0000 = 0µs
0001 = 0µs
0010 = 0.5µs
0011 = 1.0µs (default)
1111 = 7.0µs

RESERVED 5:0 Reserved bits—set to default

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

36 ______________________________________________________________________________________

Table 32. Register 29: TX_GAIN_CONFIG Register (Address = 11101, Default = 03F

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:6 Reserved bits—set to default

TXVGA_GAIN_SPI<5:0> 5:0

Tx VGA gain control through SPI.
Active when register 27 D7 = 1.
000000 = 0dB attenuation (max gain)
000001 = Max - 1dB
……….
011111 = Max - 31dB
……….
111111 = Max - 63dB (default)
Test at settings 000000, 000011, 001001, 001010, 011101, 011110, and

111111.

Table 33. Register 30: TX_DC_CORR_1 Register (Address = 11110, Default = 380

HEX

)

BIT NAME

(0 = LSB)

DESCRIPTION

PADAC_VMODE 9

PA DAC voltage mode output select
Active when register 30 D8 = 0.
0 = Logic “0” output
1 = Logic “1” output (default)

RESERVED 8:0 Reserved bits—set to default

Table 34. Register 31: TX_DC_CORR_2 Configuration Register (Address = 11111,
Default = 340HEX)

BIT NAME

(0 = LSB)

DESCRIPTION

RESERVED 9:0 Reserved bits—set to default

BIT LOCATION

BIT LOCATION

BIT LOCATION

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver

______________________________________________________________________________________ 37

Typical Operating Circuit

Rx B INPUT

Tx OUTPUT

Rx A INPUT

Rx/Tx GAIN

CONTROL

CLKOUT

SELECT

Rx/Tx GAIN

CONTROL

Rx/Tx GAIN

CONTROL

Rx/Tx GAIN

CONTROL

GNDRXLNA_A

V

CCRXLNA_A

CLKOUT_DIV

V

CCRXLNA_B

GNDRXLNA_B

RXINB+

RXINB-

V

CCTXPAD

TXOUT+

TXOUT-

MODE

CONTROL

TXRX

RXINA-

RXINA+
63 62 41 61 37 60 59 73 72 32 58 57 31 30

+

1

2

B0

64

38

3

MAX2839AS

39

5

40

B4

9

IMUX/QMUX

B3

8

10

B2

7

43

45

AM

DETECTOR

CCRXMX

V

SERIAL

INTERFACE

TXBBQ-

Tx INPUTS

TXBBQ+

TXBBI+

÷

CCRXFLVCCRXVGA

V

TXBBI-

90°

0°

CRYSTAL

OSCILLATOR/

BUFFER

TEMP

SENSOR

÷

Rx A OUTPUTS

RXBBIA+

IMUX

INTERFACE

PLL

RXBBIA-

QMUX

RSSI
MUX

SERIAL

SCLK

RXBBQA+

RSSI

QMUX

IMUX

RXBBQA-

56

29

71

70

28

69

27

68

53

66

25

23

22

21

RXHP

B6

B7

RSSI

RXBBQB+

RXBBQB-

RXBBIB+

RXBBIB-

DIN

DOUT

CS

V

CCVCO

VCOBYP

GNDVCO

Rx BASBAND
HPF CONTROL

Rx/Tx GAIN
CONTROL

Rx GAIN
CONTROL

Rx B
OUTPUTS

SERIAL
INPUT
SERIAL
OUTPUT

SERIAL
INPUT

44 42 13 46 15 65 47 16 55 17 18 19 20 51

B5

B1

Rx/Tx GAIN

CONTROL

CCTXMX

V

SCLK

SERIAL

INPUT

ENABLE

MODE

CONTROL

REFERENCE

CLOCK

OUTPUT

PABIA S

CLKOUT

REFCLK

XTAL1

CCCP

V

CCXTAL

V

GNDCP

CPOUT+

PLL

FILTER

CPOUT-

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

38 ______________________________________________________________________________________

Chip Information

PROCESS: BiCMOS

Bump Configuration

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

73 WLP W733A5+1

21-0146

Package Information

For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages

. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package draw­ings may show a different suffix character, but the drawing per­tains to the package regardless of RoHS status.

36 35 34 33

1

62

63

2

3

38

4

39

5

6

7

8

9

10

43

11

12

13

61

64

40

41

MAX2839AS

42

44

45

54

46

47

15

14

31

32

59

60

37

55

16

58 57

73

72

71

69

66

65

49

48

17

30

29

56

70

28

68

27

67

26

53

25

24

23

52

22

50

51

21

18

19

20

MAX2839AS

2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________

39

© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

Revision History

REVISION

NUMBER

0 4/09 Initial release —

1 5/10

REVISION

DATE

DESCRIPTION

Added soldering temperature to Absolute Maximum Ratings; corrected name in
global references to MAX2839AS Evaluation Kit

PAGES

CHANGED

2–18