Maxim MAX2411AEEI, MAX2411AE-D Datasheet

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________________General Description

The MAX2411A performs the RF front-end transmit/
receive function in time-division-duplex (TDD) communi­cation systems. It operates over a wide frequency range
and is optimized for RF frequencies around 1.9GHz.
Applications include most popular cordless and PCS
standards. The MAX2411A includes a low-noise amplifier
(LNA), a downconverter mixer, a local-oscillator buffer, an
upconverter mixer, and a variable-gain power-amplifier
(PA) driver in a low-cost, plastic surface-mount package.
The MAX2411A’s unique bidirectional, differential IF port
reduces cost and component count by allowing the trans­mit and receive paths to share the same IF filter.

The LNA has a 2.4dB typical noise figure and a -10dBm
input third-order intercept point (IP3). The downconvert­er mixer has a low 9.2dB noise figure and 4dBm input
IP3. Image and local-oscillator filtering are implemented
off-chip for maximum flexibility. The PA driver amplifier
has 15dB of gain, which can be reduced over a 35dB
range. Power consumption is only 60mW in receive
mode and 90mW in transmit mode and drops to less
than 3µW in shutdown mode.

For applications requiring separate, single-ended IF
input and output ports, refer to the MAX2410 data
sheet. For applications requiring only a receive func­tion, Maxim offers a low-cost downconverter with LNA
(see the MAX2406 data sheet).

________________________Applications

PWT1900 DECT
DCS1800/PCS1900 ISM-Band Transceivers
PHS/PACS Iridium Handsets

____________________________Features

♦ Low-Cost Silicon Bipolar Design
♦ Integrated Upconvert/Downconvert Function
♦ Operates from a Single +2.7V to +5.5V Supply
♦ 3.2dB Combined Receiver Noise Figure:

2.4dB (LNA)

9.2dB (mixer)

♦ Flexible Power-Amplifier Driver:

18dBm Output Third-Order Intercept (OIP3)
35dB Gain-Control Range

♦ LO Buffer for Low LO Drive Level
♦ Low Power Consumption:

60mW Receive
90mW Full-Power Transmit

♦ 0.3µW Shutdown Mode
♦ Flexible Power-Down Modes Compatible with

MAX2510/MAX2511 IF Transceivers

MAX2411A

Low-Cost RF Up/Downconverter

with LNA and PA Driver

________________________________________________________________

Maxim Integrated Products

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28
27
26
25
24
23
22
21
20
19
18
17
16
15

1
2
3
4
5
6
7
8

9
10
11
12
13
14

GND
LNAOUT
GND
GND
RXMXIN
GND

GND

IF
IF
GND
TXMXOUT
GND
GND
PADRIN

GND

PADROUT

GND

GC

V

CC

TXEN

LO

LO

RXEN

V

CC

GND

GND

LNAIN

GND

QSOP

TOP VIEW

MAX2411A

19-1324; Rev 1; 2/98

PART

MAX2411AEEI -40°C to +85°C

TEMP. RANGE PIN-PACKAGE

28 QSOP

EVALUATION KIT

AVAILABLE

_______________Ordering Information

Typical Operating Circuit appears on last page.

MAX2411AE/D -40°C to +85°C Dice*

*

Dice are specified at TA= 25°C, DC parameters only.

Functional Diagram

Pin Configuration

LNAOUT RXMXIN

MAX2411A

PA DRIVER

MANAGEMENT

LNA

POWER

PADRINGC

LNAIN

RXEN
TXEN

PADROUT

TXMXOUT

RX MIXER

TX MIXER

IF
IF

LO
LO

MAX2411A

Low-Cost RF Up/Downconverter
with LNA and PA Driver

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +2.7V to +5.5V, VGC= +3.0V, RXEN = TXEN = 0.6V, PADROUT pulled up to VCCwith 50Ω resistor; IF, IF pulled up to V

CC

with 50Ω resistor, TXMXOUT pulled up to VCCwith 125Ω resistor, LNAOUT pulled up to VCCwith 100Ω resistor, all RF inputs open,
T

A

= -40°C to +85°C. Typical values are at +25°C and VCC= +3.0V, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS

(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ω environment,
f

LO

= 1.5GHz, PLO= -10dBm, f

LNAIN

= f

PADRIN

= f

RXMXIN

= 1.9GHz, P

LNAIN

= -32dBm, P

PADRIN

= P

RXMXIN

= -22dBm,

f

IF, IF

= 400MHz, PIF= -32dBm (Note 1), TA= +25°C, unless otherwise noted.)

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.

VCCto GND ................................................................-0.3V to 6V

LNAIN Input Power...........................................................15dBm

LO, LO Input Power..........................................................10dBm

PADRIN Input Power.........................................................10dBm

RXMXIN Input Power ........................................................10dBm

IF, IF Input Power (transmit mode) ...................................10dBm

Voltage at RXEN, TXEN, GC.......................-0.3V to (V

CC

+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

QSOP (derate 11mW/°C above +70°C)........................909mW

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

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

Storage Temperature.........................................-65°C to +165°C

Lead Temperature (soldering, 10sec).............................+300°C

RXEN, TXEN pins

RXEN, TXEN pins

VCC= 3.0V

RXEN = 2.0V, TXEN = 2.0V

RXEN = 2.0V
TXEN = 2.0V

RXEN = 2.0V
TXEN = 2.0V

CONDITIONS

µA0.1 10Supply Current, Shutdown Mode

V0.6Digital Input Voltage Low

V2.0

V2.7 5.5Supply-Voltage Range

Digital Input Voltage High

µA160 520Supply Current, Standby Mode

µA0.1 1RXEN Input Bias Current (Note 1)
µA0.1 1TXEN Input Bias Current (Note 1)

mA20 29.6Supply Current, Receive Mode
mA30 44.7Supply Current, Transmit Mode

UNITSMIN TYP MAXPARAMETER

TA= T

MIN

to T

MAX

TA= +25°C

(Note 3)

RXEN = high or low

CONDITIONS

dB

12.6 19.1

Gain (Note 2)

14.2 16.2 17.4

dB2.4Noise Figure
dBm-10Input IP3
dBm-5Output 1dB Compression
dBm-49LO to LNAIN Leakage

UNITSMIN TYP MAXPARAMETER

TA= -40°C to +85°C

TA= +25°C

Single sideband
(Note 4)

(Notes 2, 5)

dB

7.5 10.9

Conversion Gain (Note 2)

8.5 9.4 10.0

dB9.2Noise Figure
dBm4.0Input IP3
dBm-7.7Input 1dB Compression
MHz450IF Frequency

(Note 6) dBm-17Minimum LO Drive Level

LOW-NOISE AMPLIFIER (RXEN = high)

RECEIVE MIXER (RXEN = high)

GC = 3V, TXEN = 2V µA35 51.1GC Input Bias Current

MAX2411A

Low-Cost RF Up/Downconverter

with LNA and PA Driver

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ω environment,
f

LO

= 1.5GHz, PLO= -10dBm, f

LNAIN

= f

PADRIN

= f

RXMXIN

= 1.9GHz, P

LNAIN

= -32dBm, P

PADRIN

= P

RXMXIN

= -22dBm,

f

IF, IF

= 400MHz, PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C,

unless otherwise noted.)

Note 1: Power delivered to IF SMA connector of MAX2411A EV kit. Power delivered to MAX2411A IC is approximately 1.0dB less

due to balun losses.

Note 2: Guaranteed by design and characterization.
Note 3: Two tones at 1.9GHz and 1.901GHz at -32dBm per tone.
Note 4: Two tones at 1.9GHz and 1.901GHz at -22dBm per tone.
Note 5: Mixer operation guaranteed to this frequency. For optimum gain, adjust output match. See the

Typical Operating

Characteristics

for graphs of IF port impedance versus IF frequency.

Note 6: At this LO drive level, the mixer conversion gain is typically 1dB lower than with -10dBm LO drive.
Note 7: Two tones at 400MHz and 401MHz at -32dBm per tone.
Note 8: Transmit mixer output at -17dBm.
Note 9: Calculated from measurements taken at V

GC

= 1.0V and VGC= 1.5V.

Note 10: Time from RXEN = low to RXEN = high transition until the combined receive gain is within 1dB of its final value. Measured

with 47pF blocking capacitors on LNAIN and LNAOUT.

Note 11: Time from TXEN = low to TXEN = high transition until the combined transmit gain is within 1dB of its final value. Measured

with 47pF blocking capacitors on PADRIN and PADROUT.

CONDITIONS UNITSMIN TYP MAXPARAMETER

TA= +25°C 6.8 8.5 9.3

(Notes 1, 7) dBm0.5Output IP3

TA= T

MIN

to T

MAX

dB

5.7 10.4

Conversion Gain (Note 1)

dBm-58LO Leakage

(Notes 2, 5) MHz450IF Frequency

Single sideband dB8.3Noise Figure

dBm-11.1Output 1dB Compression Point

F

OUT

= 2LO-3IF = 1.8GHz -70

F

OUT

= 2LO-2IF = 2.2GHz -45.5

TA= T

MIN

to T

MAX

dB

12.3 17

F

OUT

= 3LO-6IF = 2.1GHz

Gain (Note 2)

TA= +25°C 13 15 16.4

dBc

-90

Intermod Spurious Response
(Note 8)

(Note 4) dBm18Output IP3

dB35Gain-Control Range

dBm6.3Output 1dB Compression Point

(Note 9) dB/V12Gain-Control Sensitivity

Receive mode (TXEN = low) 1.10
Transmit mode (RXEN = low) 1.02

Input Relative VSWR

TXEN = low to high µs0.3 2.5Transmitter Turn-On Time (Notes 2, 11)

RXEN = low to high µs0.5 2.5Receiver Turn-On Time (Notes 2, 10)

TRANSMIT MIXER (TXEN = high)

PA DRIVER (TXEN = high)

POWER MANAGEMENT (RXEN = TXEN = low)

LOCAL-OSCILLATOR INPUTS (RXEN = TXEN = high)

MAX2411A

Low-Cost RF Up/Downconverter
with LNA and PA Driver

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ω environment,
fLO= 1.5GHz, PLO= -10dBm, f

LNAIN

= f

PADRIN

= f

RXMXIN

= 1.9GHz, P

LNAIN

= -32dBm, P

PADRIN

= P

RXMXIN

= -22dBm,

f

IF, IF

= 400MHz, PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C,

unless otherwise noted.)

26

30

28

34

32

36

38

-40 10-15 35 60 85

TRANSMIT-MODE SUPPLY CURRENT

vs. TEMPERATURE

MAX2411A-01

TEMPERATURE (°C)

TRANSMITTER SUPPLY CURRENT (mA)

VCC = 5.5V

TXEN = V

CC

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

17

19

18

21

20

23

22

24

-40 10-15 35 60 85

RECEIVE-MODE SUPPLY CURRENT

vs. TEMPERATURE

MAX2411A-02

TEMPERATURE (°C)

RECEIVE SUPPLY CURRENT (mA)

VCC = 5.5V

RXEN = V

CC

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

0

0.03

0.02

0.01

0.04

0.05

0.06

0.07

0.08

0.09

0.10

-40 10-15 35 60 85

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX2411A-03

TEMPERATURE (°C)

SHUTDOWN SUPPLY CURRENT (µA)

VCC = 5.5V

RXEN = TXEN = GND

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

0

100

300

200

400

500

-40 10-15 35 60 85

STANDBY SUPPLY CURRENT

vs. TEMPERATURE

MAX2411A-04

TEMPERATURE (°C)

STANDBY SUPPLY CURRENT (µA)

VCC = 5.5V

RXEN = TXEN = 2.0V

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

0

10

5

20

15

25

30

0 1.0 1.50.5 2.0 2.5 3.0

LNA GAIN vs. FREQUENCY

MAX2411A-07

FREQUENCY (GHz)

LNA GAIN (dB)

1pF SHUNT CAPACITOR AT LNA INPUT
USING EV KIT MATCHING CIRCUIT
(OPTIMIZED FOR 1.9GHz)

RXEN = V

CC

0

40

20

80

60

100

120

0 1.0 1.50.5 2.0 2.5 3.0

LNA INPUT IMPEDANCE

vs. FREQUENCY

MAX2411A-05

FREQUENCY (GHz)

REAL IMPEDANCE (Ω)

-200

-120

-160

-40

-80

0

40

IMAGINARY IMPEDANCE (Ω)

IMAGINARY

REAL

RXEN = V

CC

0

50

150

100

200

250

0 1.00.5 1.5 2.0 2.5 3.0

LNA OUTPUT IMPEDANCE

vs. FREQUENCY

MAX2411A-06

FREQUENCY (GHz)

REAL IMPEDANCE (Ω)

-125

-100

-50

-75

-25

0

IMAGINARY IMPEDANCE (Ω)

IMAGINARY

REAL

RXEN = V

CC

13

15

14

17

16

19

18

20

-40 10-15 35 60 85

LNA GAIN vs. TEMPERATURE

MAX2411A-08

TEMPERATURE (°C)

LNA GAIN (dB)

VCC = 5.5V

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

RXEN = V

CC

-15

-12

-13

-14

-10

-11

-6

-7

-8

-9

-5

-40 -20 0 20 40 60 10080

LNA INPUT IP3 vs. TEMPERATURE

MAX2411A-09

TEMPERATURE (°C)

INPUT IP3 (dBm)

VCC = 5.5V

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

RXEN = V

CC

MAX2411A

Low-Cost RF Up/Downconverter

with LNA and PA Driver

_______________________________________________________________________________________

5

0.0

1.0

0.5

2.0

1.5

3.0

2.5

3.5

4.5

4.0

5.0

100 480 860 1240 1620 2000

LNA NOISE FIGURE vs. FREQUENCY

MAX2411A-10

FREQUENCY (MHz)

NOISE FIGURE (dB)

RXEN = V

CC

-6

-4

-5

-2

-3

-1

0

2.7 3.7 4.23.2 4.7 5.2

LNA OUTPUT 1dB COMPRESSION POINT

vs. SUPPLY VOLTAGE

MAX2411A-11

SUPPLY VOLTAGE (V)

OUTPUT 1dB COMPRESSION POINT (dBm)

RXEN = V

CC

0

20

40

60

80

100

120

140

-250

-210

-170

-130

-90

-50

-10

30

160 70

0 1.00.5 1.5 2.0 2.5 3.0

PA DRIVER INPUT IMPEDANCE

vs. FREQUENCY

MAX2411A-12

FREQUENCY (GHz)

REAL IMPEDANCE (Ω)

IMAGINARY IMPEDANCE (Ω)

IMAGINARY

REAL

TXEN = V

CC

0

25

50

75

100

125

150

175

200

-350

-300

-250

-200

-150

-100

-50

0

50

0 1.00.5 1.5 2.0 2.5 3.0

PA DRIVER OUTPUT IMPEDANCE

vs. FREQUENCY

MAX2411A-13

FREQUENCY (GHz)

REAL IMPEDANCE (Ω)

IMAGINARY IMPEDANCE (Ω)

IMAGINARY

REAL

TXEN = V

CC

14

16

15

18

17

20

19

21

-40 0 20-20 40 60 10080

PA DRIVER OUTPUT IP3

vs. TEMPERATURE

MAX2411A-16

TEMPERATURE (°C)

OUTPUT IP3 (dBm)

VCC = 5.5V

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

TXEN = V

CC

0

10

5

20

15

25

30

0 1.0 1.50.5 2.0 2.5 3.0

PA DRIVER GAIN vs. FREQUENCY

MAX2411A-14

FREQUENCY (GHz)

GAIN (dB)

USING EV KIT
MATCHING NETWORK
(OPTIMIZED FOR 1.9GHz)

TXEN = V

CC

-30

-20

-25

-5

-10

-15

0

5

15
10

20

0 0.4 0.60.2 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2

PA DRIVER GAIN AND OUTPUT IP3

vs. GC VOLTAGE

MAX2411A-15

GC VOLTAGE (V)

GAIN (dB) OR OUTPUT IP3 (dBm)

IP3

GAIN

TXEN = V

CC

12

14

13

16

15

17

18

-40 10-15 35 60 85

PA DRIVER GAIN vs. TEMPERATURE

MAX2411A-17

TEMPERATURE (°C)

PA DRIVER GAIN (dB)

VCC = 5.5V

VCC = 4.0V

VCC = 2.7V

VCC = 3.0V

TXEN = V

CC

-4

0

-2

4

2

6

8

2.7 3.7 4.23.2 4.7 5.75.2

PA DRIVER OUTPUT 1dB COMPRESSION

vs. SUPPLY VOLTAGE

MAX2411A-18

SUPPLY VOLTAGE (V)

OUTPUT 1dB COMPRESSION POINT (dBm)

VGC = 2.15V

VGC = 1.0V

TXEN = V

CC

_____________________________Typical Operating Characteristics (continued)

(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ω environment, fLO= 1.5GHz,
PLO= -10dBm, f

LNAIN

= f

PADRIN

= f

RXMXIN

= 1.9GHz, P

LNAIN

= -32dBm, P

PADRIN

= P

RXMXIN

= -22dBm, f

IF, IF

= 400MHz,

PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C, unless otherwise noted.)