MAXIM MAX2064 User Manual

19-5618; Rev 0; 12/10

Dual 50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

General Description

The MAX2064 high-linearity, dual analog variable-gain
amplifier (VGA) operates in the 50MHz to 1000MHz fre­quency range. Each analog attenuator is controlled using
an external voltage, or through the SPI™-compatible
interface using an on-chip 8-bit DAC.

Since each of the stages has its own external RF
input and RF output, this component can be con­figured to either optimize noise figure (NF) (ampli­fier configured first) or OIP3 (amplifier last). The
device’s performance features include 24dB ampli­fier gain (amplifier only), 4.4dB NF at maximum gain
(includes attenuator insertion losses), and a high
OIP3 level of +41dBm. Each of these features makes
the device an ideal VGA for multipath receiver and
transmitter applications.

In addition, the device operates from a single +5V
supply with full performance, or a +3.3V supply for an
enhanced power-savings mode with lower performance.
The device is available in a compact 48-pin TQFN
package (7mm x 7mm) with an exposed pad. Electrical
performance is guaranteed over the extended tempera­ture range, from T

= -40NC to +85NC.

C

Features

S Independently Controlled Dual Paths

S

50MHz to 1000MHz RF Frequency Range

S

Pin-Compatible Family Includes

MAX2062 (Analog/Digital VGA)
MAX2063 (Digital-Only VGA)

S

22dB (typ) Maximum Gain

S

0.19dB Gain Flatness Over 100MHz Bandwidth

S

33dB Gain Range

S

49dB Path Isolation (at 200MHz)

S

Built-In 8-Bit DACs for Analog Attenuation Control

S

Excellent Linearity at 200MHz (Configured with

Amp Last)
+41dBm OIP3
+59dBm OIP2
+19dBm Output 1dB Compression Point

S

4.4dB Typical Noise Figure (at 200MHz)

S

Single +5V Supply (or +3.3V Operation)

S

Amplifier Power-Down Mode for TDD Applications

MAX2064

Applications

IF and RF Gain Stages

Temperature-Compensation Circuits

M

WCDMA, TD-SCDMA, and cdma2000
Stations

GSM 850/GSM 900 EDGE Base Stations

WiMAXK, LTE, and TD-LTE Base Stations and
Customer-Premise Equipment

Fixed Broadband Wireless Access

Wireless Local Loop

Military Systems

SPI is a trademark of Motorola, Inc.
cdma2000 is a registered trademark of Telecommunications

Industry Association.
WiMAX is a trademark of WiMAX Forum.

Base

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX2064ETM+
MAX2064ETM+T

+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.

T = Tape and reel.

-40NC to +85NC

-40NC to +85NC

48 TQFN-EP*
48 TQFN-EP*

_______________________________________________________________ Maxim Integrated Products 1

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.

Dual 50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA

ABSOLUTE MAXIMUM RATINGS

V

CC_AMP_1

PD_1, PD_2, AMPSET to GND .............................-0.3V to +3.6V

A_VCTL_1, A_VCTL_2 to GND .............................-0.3V to +3.6V

DAT, CS, CLK, AA_SP to GND ............................-0.3V to +3.6V

AMP_IN_1, AMP_IN_2 to GND ..........................+0.95V to +1.2V

AMP_OUT_1, AMP_OUT_2 to GND .....................-0.3V to +5.5V

A_ATT_IN_1, A_ATT_IN_2, A_ATT_OUT_1,

A_ATT_OUT_2 to GND ......................................... 0V to +3.6V

MAX2064

REG_OUT to GND ................................................-0.3V to +3.6V

RF Input Power (A_ATT_IN_1, A_ATT_IN_2) ................. +20dBm

Note 1: Based on junction temperature TJ = TC + (qJC x VCC x ICC). This formula can be used when the temperature of the

Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

Note 3: Junction temperature T

Note 4: T

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.

, V

CC_AMP_2

exposed pad is known while the device is soldered down to a PCB. See the Applications Information section for details.
The junction temperature must not exceed +150NC.

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

known. The junction temperature must not exceed +150NC.

is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB.

C

, V

to GND ..........-0.3V to +5.5V

CC_RG

= TA + (qJA x VCC x ICC). This formula can be used when the ambient temperature of the PCB is

J

RF Input Power (AMP_IN_1, AMP_IN_2) ....................... +18dBm

q

(Notes 1, 2) ......................................................... +12.3NC/W

JC

q

(Notes 2, 3) ............................................................ +38NC/W

JA

Continuous Power Dissipation (Note 1) .............................. 5.3W

Operating Case Temperature Range (Note 4) .. -40NC to +85NC

Junction Temperature .....................................................+150NC

Storage Temperature Range ............................ -65NC to +150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

+5V SUPPLY DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, VCC = V

= -40NC to +85NC. Typical values are at V

T

C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V
Supply Current I
Power-Down Current I
Input Low Voltage V
Input High Voltage V
Input Logic Current I

CC_AMP_1

DCPD

IH, IIL

CC

DC

= V

CC_AMP_2

= +5.0V and TC = +25NC, unless otherwise noted.)

CC_

PD_1 = PD_2 = 1, VIH = 3.3V 5.3 8 mA

IL

IH

= V

= +4.75V to +5.25V, AMPSET = 0, PD_1 = PD_2 = 0,

CC_RG

+3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, VCC = V

= -40NC to +85NC. Typical values are at V

T

C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V
Supply Current I
Power-Down Current I
Input Low Voltage V
Input High Voltage V

CC_AMP_1

DCPD

CC

DC

= V

CC_AMP_2

= +3.3V and TC = +25NC, unless otherwise noted.)

CC_

PD_1 = PD_2 = 1, VIH = 3.3V 4.5 8 mA

IL

IH

= V

= +3.135V to +3.465V, AMPSET = 1, PD_1 = PD_2 = 0,

CC_RG

4.75 5 5.25 V
143 210 mA

0.5 V

1.7 3.465 V

-1 +1

3.135 3.3 3.465 V

84.7 145 mA

0.5 V

1.7 V

FA

2 ______________________________________________________________________________________

Dual 50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

RECOMMENDED AC OPERATING CONDITIONS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency f

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (each path, unless otherwise noted)

(Typical Application Circuit, VCC = V
RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz P f
values are at maximum gain setting, V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Small-Signal Gain G

Gain vs. Temperature -0.006

Gain Flatness vs. Frequency

Noise Figure NF

Total Attenuation Range

Output Second-Order Intercept
Point

Path Isolation

Output Third-Order Intercept Point OIP3

CC_AMP_1

CC

OIP2

(Note 5) 50 1000 MHz

RF

= V

CC_AMP_2

= +5.0V, PIN = -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.) (Note 6)

f

= 50MHz 22.4

RF

= 100MHz 22.3

f

RF

= 200MHz 22.2

f

RF

f

= 350MHz, TC = +25NC

RF

f

= 450MHz 21.7

RF

= 750MHz 21.4

f

RF

= 900MHz 20.6

f

RF

From 100MHz to 200MHz 0.18

Any 100MHz frequency band from 200MHz
to 500MHz

= 50MHz 4.4

f

RF

= 100MHz 4.4

f

RF

= 200MHz 4.4

f

RF

= 350MHz 4.6

f

RF

= 450MHz 4.7

f

RF

= 750MHz 5.3

f

RF

= 900MHz 5.7

f

RF

= 350MHz, TC = +25NC

f

RF

P

OUT

RF input 1 amplified power measured at RF
output 2 relative to RF output 1, all unused
ports terminated to 50I

RF input 2 amplified signal measured at RF
output 1 relative to RF output 2, all unused
ports terminated to 50I

P

OUT

P

OUT

P

OUT

P

OUT

P

OUT

P

OUT

P

OUT

= V

= 0dBm/tone, Df = 1MHz, f1 + f

= 0dBm/tone, Df = 1MHz, fRF = 50MHz
= 0dBm/tone, Df = 1MHz, fRF = 100MHz
= 0dBm/tone, Df = 1MHz, fRF = 200MHz
= 0dBm/tone, Df = 1MHz, fRF = 350MHz
= 0dBm/tone, Df = 1MHz, fRF = 450MHz
= 0dBm/tone, Df = 1MHz, fRF = 750MHz
= 0dBm/tone, Df = 1MHz, fRF = 900MHz

= +4.75V to +5.25V, attenuators are set for maximum gain,

CC_RG

P 500MHz, TC = -40NC to +85NC. Typical

RF

2

19.5 21.9 23.5

dB/NC

0.19

30 32.9 dB

53.7 dBm

48.7

48.6

46.3

44.2

41.1

37.1

34.9

28.2

24.6

dB

dB

dB

dB

dBm

MAX2064

_______________________________________________________________________________________ 3

Dual 50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (each path, unless otherwise noted)
(continued)

(Typical Application Circuit, VCC = V
RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz P f
values are at maximum gain setting, V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output -1dB Compression Point P

MAX2064

Second Harmonic P
Third Harmonic P
Group Delay Includes EV kit PCB delays 0.9 ns

Amplifier Power-Down Time

Amplifier Power-Up Time

Input Return Loss RL
Output Return Loss RL

ANALOG ATTENUATOR (each path, unless otherwise noted)

Insertion Loss IL 2.2 dB

Input Second-Order Intercept
Point

Input Third-Order Intercept Point IIP3

Attenuation Range 32.9 dB
Gain Control Slope Analog control input -13.3 dB/V
Maximum Gain Control Slope Over analog control input range -35.2 dB/V
Insertion Phase Change Over analog control input range 16.5 Deg/V

Attenuator Response Time

Group Delay vs. Control Voltage

Analog Control Input Range 0.25 2.75 V
Analog Control Input Impedance 19.2
Input Return Loss
Output Return Loss

CC_AMP_1

CC

= V

CC_AMP_2

= +5.0V, PIN = -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.) (Note 6)

1dB

IIP2

fRF = 350MHz, TC = +25NC (Note 7)

OUT

OUT

PD_1 or PD_2 from 0 to 1, amplifier DC
supply current settles to within 0.1mA

PD_1 or PD_2 from 1 to 0, amplifier DC
supply current settles to within 1%

50I source

IN

50I load

OUT

= 0dBm, P

P

IN1

attenuation), Df = 1MHz, f

P

= 0dBm, P

IN1

attenuation), Df = 1MHz

RF settled to
within Q0.5dB

Over analog control input from 0.25V to

2.75V

50I source
50I load

= V

= +3dBm -56.7 dBc
= +3dBm -72.4 dBc

= +4.75V to +5.25V, attenuators are set for maximum gain,

CC_RG

P 500MHz, TC = -40NC to +85NC. Typical

RF

17 18.7 dBm

0.5

0.5

16.8 dB

30.7 dB

= 0dBm (minimum

IN2

+ f

1

2

= 0dBm (minimum

IN2

31dB to 0dB, AA_SP = 0,
from A_VCTL_ step

31dB to 0dB, AA_SP = 1,
from CS step

0dB to 31dB, AA_SP = 0,
from A_VCTL_ step

0dB to 31dB, AA_SP = 1,
from CS step

61.9 dBm

37.0 dBm

500

500

500

500

-0.26 ns

16.0 dB

15.9 dB

Fs

Fs

ns

kI

4 ______________________________________________________________________________________

Dual 50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (each path, unless otherwise noted)
(continued)

(Typical Application Circuit, VCC = V
RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz P f
values are at maximum gain setting, V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

D/A CONVERTER

Number of Bits 8 Bits

Output Voltage

SERIAL PERIPHERAL INTERFACE (SPI)

Maximum Clock Speed 20 MHz
Data-to-Clock Setup Time t
Data-to-Clock Hold Time t
Clock-to-CS Setup Time

CS Positive Pulse Width
CS Setup Time

Clock Pulse Width t

CC_AMP_1

CC

= V

CC_AMP_2

= +5.0V, PIN = -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.) (Note 6)

DAC code = 00000000 0.35
DAC code = 11111111 2.7

CS

CH

t

ES

t

EW

t

EWS

CW

= V

= +4.75V to +5.25V, attenuators are set for maximum gain,

CC_RG

P 500MHz, TC = -40NC to +85NC. Typical

RF

2 ns

2.5 ns
3 ns
7 ns

3.5 ns
5 ns

V

MAX2064

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS (each path, unless otherwise noted)

(Typical Application Circuit, VCC = V
gain, RF ports are driven from 50I sources, AMPSET = 1, PD_1 = PD_2 = 0, 100MHz P f
values are at maximum gain setting, V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Small-Signal Gain G 21.8 dB
Output Third-Order Intercept Point OIP3 P
Noise Figure NF 4.8 dB

Total Attenuation Range 32.9 dB

Path Isolation

Output -1dB Compression Point P

Note 5: Operation outside this range is possible, but with degraded performance of some parameters. See the Typical Operating

Characteristics.

Note 6: All limits include external component losses. Output measurements are performed at the RF output port of the Typical

Application Circuit.

Note 7: It is advisable not to continuously operate the RF input 1 or RF input 2 above +15dBm.

CC_AMP_1

CC

= V

CC_AMP_2

= +3.3V, PIN = -20dBm, fRF = 350MHz, and T

= 0dBm/tone 29.1 dBm

OUT

RF input 1 amplified power measured at RF
output 2 relative to RF output 1, all unused
ports terminated to 50I

RF input 2 amplified signal measured at RF
output 1 relative to RF output 2, all unused
ports terminated to 50I

1dB

(Note 7) 13.2 dBm

= V

= +3.135V to +3.465V, attenuators are set for maximum

CC_RG

P 500MHz, T

RF

= +25NC, unless otherwise noted.) (Note 6)

C

= -40NC to +85NC. Typical

C

48.1

dB

48.2

_______________________________________________________________________________________ 5

Dual 50MHz to 1000MHz High-Linearity,

GAIN OVER ANALOG ATTENUATOR

GAIN vs. ANALOG ATTENUATOR

INPUT MATCH vs. ANALOG

OUTPUT MATCH vs. ANALOG

Serial/Analog-Controlled VGA

Typical Operating Characteristics

(Typical Application Circuit, VCC = V

CC_AMP_1

driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, P

= V

CC_AMP_2

= V

= -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.)

IN

= +5V, attenuators are set for maximum gain, RF ports are

CC_RG

SUPPLY CURRENT vs. SUPPLY VOTAGE

165

MAX2064

TC = -40°C

155

145

SUPPLY CURRENT (mA)

135

125

4.750 5.250

TC = +85°C

SETTING VS. RF FREQUENCY

24

19

14

DAC CODE 32

9

4

-1

GAIN OVER ANALOG

-6

ATTENENUATOR SETTING (dB)

-11

-16
50 1050

DAC CODE 64

DAC CODE 128

RF FREQUENCY (MHz)

TC = +25°C

VCC (V)

DAC CODE 255

5.1255.0004.875

DAC CODE 0

850650250 450

MAX2064 toc01

MAX2064 toc04

24

23

22

21

GAIN (dB)

20

19

18

TC = -40°C

TC = +85°C

50 1050

NOTCH DUE TO
SELF-RESONANCE OF
BIAS COIL (SEE TABLE 4)

TC = +25°C

RF FREQUENCY (MHz)

GAIN vs. ANALOG ATTENUATOR

SETTING

24

GAIN vs. RF FREQUENCY

19

14

9

4

GAIN (dB)

-1

-6

-11

-16
0 256

1000MHz

ANALOG ATTENUATOR SETTING (DAC CODE)

50MHz

350MHz

850650450250

200MHz

22419232 64 96 128 160

MAX2064 toc02

MAX2064 toc05

24

23

22

21

GAIN (dB)

20

19

18

VCC = 4.75V, 5.00V, 5.25V

50 1050

RF FREQUENCY (MHz)

GAIN vs. ANALOG ATTENUATOR

SETTING

24

19

GAIN vs. RF FREQUENCY

14

9

4

GAIN (dB)

-1

-6

-11

-16
0 256

ANALOG ATTENUATOR SETTING (DAC CODE)

TC = -40°C, +25°

MAX2064 toc03

850650450250

RF = 350MHz

MAX2064 toc06

C, +85°C

22419232 64 96 128 160

24

SETTING

19

14

9

4

GAIN (dB)

-1

-6

-11

-16
0 256

ANALOG ATTENUATOR SETTING (DAC CODE)

VCC = 4.75V, 5.00V, 5.25V

RF = 350MHz

22419232 64 96 128 160

MAX2064 toc07

INPUT MATCH (dB)

0

-5

-10

-15

-20

-25

-30

-35

ATTENUATOR SETTING

50MHz

350MHz

0 256

ANALOG ATTENUATOR SETTING (DAC CODE)

1000MHz

200MHz

224192160128966432

-5

MAX2064 toc08

-10

-15

-20

OUTPUT MATCH (dB)

-25

-30

-35

0

50MHz

0 256

ANALOG ATTENUATOR SETTING (DAC CODE)

6 ______________________________________________________________________________________

ATTENUATOR SETTING

1000MHz

200MHz

350MHz

MAX2064 toc09

224192160128966432