MAXIM MAX2067 Technical data

General Description

The MAX2067 high-linearity analog variable-gain ampli­fier (VGA) is a monolithic SiGe BiCMOS attenuator and
amplifier designed to interface with 50Ω systems oper­ating in the 50MHz to 1000MHz frequency range (see
the

Typical Application Circuit

). The analog attenuator
is controlled using an external voltage or through the
SPI™-compatible interface using an on-chip 8-bit DAC.

Because each stage has its own RF input and RF out­put, this component can be configured to either opti­mize NF (amplifier configured first), or OIP3 (amplifier
last). The device’s performance features include 22dB
amplifier gain (amplifier only), 4dB NF at maximum gain
(includes attenuator insertion loss), and a high OIP3
level of +43dBm. Each of these features makes the
MAX2067 an ideal VGA for numerous receiver and
transmitter applications.

In addition, the MAX2067 operates from a single +5V
supply with full performance, or a single +3.3V supply
with slightly reduced performance, and has an
adjustable bias to trade current consumption for linearity
performance. This device is available in a compact 40­pin thin QFN package (6mm x 6mm) with an exposed
pad. Electrical performance is guaranteed over the
extended temperature range (T

C

= -40°C to +85°C).

Applications

IF and RF Gain Stages

Temperature Compensation Circuits

Cellular Band WCDMA and cdma2000® Base
Stations

GSM 850/GSM 900 EDGE Base Stations

WiMAX and LTE Base Stations and Customer
Premise Equipment

Fixed Broadband Wireless Access

Wireless Local Loop

Military Systems

Video-on-Demand (VOD) and DOCSIS®­Compliant EDGE QAM Modulation

Cable Modem Termination Systems (CMTS)

RFID Handheld and Portal Readers

Features

 50MHz to 1000MHz RF Frequency Range

 Pin-Compatible Family Includes

MAX2065 (Analog/Digital VGA)
MAX2066 (Digital VGA)

 +21.9dB (typ) Maximum Gain

 0.5dB Gain Flatness Over 100MHz Bandwidth

 31dB Gain Range

 Built-In DAC for Analog Attenuation Control

 Excellent Linearity (Configured with Amplifier

Last)

+43dBm OIP3
+66dBm OIP2
+19dBm Output 1dB Compression Point

-70dBc HD2

-87dBc HD3

 4dB Typical Noise Figure (NF)

 Single +5V Supply (Optional +3.3V Operation)

 External Current-Setting Resistors Provide Option

for Operating Device in Reduced-Power/
Reduced-Performance Mode

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-4080; Rev 0; 4/08

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.

+

Denotes a lead-free package.

*

EP = Exposed pad.

T = Tape and reel.

Pin Configuration appears at end of data sheet.

SPI is a trademark of Motorola, Inc.

cdma2000 is a registered trademark of Telecommunications
Industry Association.

DOCSIS and CableLabs are registered trademarks of Cable
Television Laboratories, Inc. (CableLabs®).

PART TEMP RANGE PIN-PACKAGE

MAX2067ETL+ -40°C to +85°C 40 Thin QFN-EP*

MAX2067ETL+T -40°C to +85°C 40 Thin QFN-EP*

MAX2067

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

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

+3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, high-current (HC) mode, VCC= VDD= +3.0V to +3.6V, TC= -40°C to +85°C. Typical values are at VCC=

V

DD

= +3.3V and TC= +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.

Note 1: Based on junction temperature TJ= TC+ (θJCx VCCx ICC). This formula can be used when the temperature of the exposed

pad is known while the device is soldered down to a printed-circuit board (PCB). See the

Applications Information

section

for details. The junction temperature must not exceed +150°C.

Note 2: Junction temperature T

J

= TA+ (θJAx VCCx ICC). This formula can be used when the ambient temperature of the PCB is

known. The junction temperature must not exceed +150°C.

Note 3: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer

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

.

Note 4: T

C

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

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

VDD_LOGIC, DATA, CS, CLK, VDAC_EN,

VREF_SELECT.....................................-0.3V to (VCC_ + 0.3V)

AMP_IN, AMP_OUT, VREF_IN,

ANALOG_VCTRL ................................-0.3V to (VCC_ + 0.3V)

ATTEN_IN, ATTEN_OUT........................................-1.2V to +1.2V

RSET to GND.........................................................-0.3V to +1.2V

RF Input Power (ATTEN_IN, ATTEN_OUT).....................+20dBm

RF Input Power (AMP_IN)...............................................+18dBm

Continuous Power Dissipation (Note 1) ...............................6.5W

θ

JA

(Notes 2, 3)..............................................................+38°C/W

θ

JC

(Note 3) ...................................................................+10°C/W

Operating Temperature Range (Note 4).....T

C

= -40°C to +85°C

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

Storage Temperature Range .............................-65°C to +150°C

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

+5V SUPPLY DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= VDD= +4.75V to +5.25V, TC= -40°C to +85°C. Typical values are at V

CC

= VDD= +5V and

T

C

= +25°C, unless otherwise noted.)

Supply Voltage V

Supply Current I

LOGIC INPUTS (DATA, CS, CLK, VDAC_EN, VREF_SELECT)

Input High Voltage V

Input Low Voltage V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CC

CC

Note 5 3.0 3.3 3.6 V

IH

IL

Supply Voltage V

Supply Current I

LOGIC INPUTS (DATA, CS, CLK, VDAC_EN, VREF_SELECT)

Input High Voltage V

Input Low Voltage V

Input Current Logic-High I

Input Current Logic-Low I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CC

CC

IH

Low-current (LC) mode 72 92

High-current (HC) mode 123 146

IH

IL

IL

60 82 mA

2V

0.8 V

4.75 5 5.25 V

mA

3V

0.8 V

-1 +1 µA

-1 +1 µA

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

_______________________________________________________________________________________ 3

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= VDD= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz ≤ fRF≤ 1000MHz,

T

C

= -40°C to +85°C. Typical values are at VCC= VDD= +5.0V, HC mode, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, unless

otherwise noted.) (Note 6)

+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, VCC= VDD= +3.0V to +3.6V, TC= -40°C to +85°C. Typical values are at V

CC

= VDD= +3.3V, HC mode

with attenuator set for maximum gain, P

IN

= -20dBm, fRF= 200MHz, and TC= +25°C, unless otherwise noted.) (Note 6)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency Range f

Small-Signal Gain G 21.3 dB

Output Third-Order Intercept
Point

Noise Figure NF Maximum gain setting 4.3 dB

Total Attenuation Range 31 dB

RF

OIP3 P

(Notes 5, 7) 50 1000 MHz

= 0dBm/tone, maximum gain setting 38 dBm

OUT

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF Frequency Range f

Small-Signal Gain G

Gain Variation vs. Temperature -0.006 dB/°C

Gain Flatness vs. Frequency

Noise Figure NF

Total Attenuation Range 31 dB

Output Second-Order Intercept
Point

Output Third-Order Intercept
Point

RF

OIP2 P

OIP3

(Notes 5, 7) 50 1000 MHz

200MHz 21.9

350MHz, TC = +25°C (Note 5) 20.3 21.3 22.3

450MHz 20.9

750MHz 19.4

900MHz 18.7

Any 100MHz frequency band from 50MHz
to 500MHz

200MHz 4

350MHz, TC = +25°C (Note 5) 4.2 5.2

450MHz 4.3

750MHz 4.8

900MHz 5

= 0dBm/tone, ∆f = 1MHz, f1 + f

OUT

P

= 0dBm/tone,

OUT

H C m od e, ∆ f = 1M H z

P

= 0dBm/tone,

OUT

LC mode, ∆f = 1MHz

200MHz 43

350MHz 40.8

450MHz 39.8

750MHz 37.3

900MHz 36.2

200MHz 40

350MHz 38.2

450MHz 37.4

750MHz 35.5

900MHz 34.3

2

0.5 dB

66 dBm

dB

dB

dBm

MAX2067

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

4 _______________________________________________________________________________________

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, VCC= VDD= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz ≤ fRF≤ 1000MHz,

T

C

= -40°C to +85°C. Typical values are at VCC= VDD= +5.0V, HC mode, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, unless

otherwise noted.) (Note 6)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output -1dB Compression Point P

Second Harmonic

Third Harmonic

Attenuator Response Time
(Note 9)

Group Delay

Input Return Loss 50Ω source, maximum gain setting 30 dB

Output Return Loss 50Ω load, maximum gain setting 16 dB

ANALOG ATTENUATOR

Insertion Loss 1.2 dB

Input Second-Order Intercept
Point

Input Third-Order Intercept Point IIP3

Attenuation Range Analog control input 31 dB

Gain-Control Slope Analog control input -12.5 dB/V

Maximum Gain-Control Slope Over analog control input range -35 dB/V

Insertion Phase Change Over analog control input range 18 D eg r ees

Group Delay vs. Control Voltage Over analog control input range -0.25 ns

Analog Control Input Range 0.25 2.75 V

Analog Control Input Impedance 80 kΩ

Input Return Loss 50Ω source, maximum gain setting 22 dB

Output Return Loss 50Ω load, maximum gain setting 22 dB

DAC

Number of Bits 8 Bits

Output Voltage

1dB

IIP2

350MHz, TC = +25°C (Notes 5, 8) 17 18.7 dBm

P

= +3dBm, fRF = 200MHz, TC = +25°C

OUT

(Note 5)

P

= +3dBm, fRF = 200MHz, TC = +25°C

OUT

(Note 5)

Input from ANALOG_VCTRL 1
Input from CS rising edge 3.2

Maximum gain setting, includes EV kit PCB
delays

P

= 0dBm, P

RF1

setting, ∆f = 1MHz, f

P

= 0dBm, P

RF1

setting, ∆f = 1MHz

DAC code = 00000000 0.25

DAC code = 11111111 2.75

= 0dBm, maximum gain

RF2

+ f

1

2

= 0dBm, maximum gain

RF2

-61 -70 dBc

-74 -87 dBc

0.8 ns

70 dBm

36 dBm

µs

V

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

_______________________________________________________________________________________ 5

+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, VCC= VDD= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz ≤ fRF≤ 1000MHz,

T

C

= -40°C to +85°C. Typical values are at VCC= VDD= +5.0V, HC mode, PIN= -20dBm, fRF= 200MHz, and TC= +25oC, unless

otherwise noted.) (Note 6)

Note 5: Guaranteed by design and characterization.
Note 6: All limits include external component losses. Output measurements are performed at RF output port of the

Typical

Application Circuit

Note 7: Operating outside this range is possible, but with degraded performance of some parameters.
Note 8: It is advisable not to continuously operate the VGA RF input above +15dBm.
Note 9: Response time includes full attenuation range change with output setting to within ±0.1dB.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SERIAL PERIPHERAL INTERFACE (SPI)

Maximum Clock Speed f

Data-to-Clock Setup Time t

Data-to-Clock Hold Time t
Clock-to-CS Setup Time t

CS Positive Pulse Width t
CS Setup Time t

Clock Pulse Width t

CLK

CS

CH

ES

EW

EWS

CW

20 MHz

2ns

2.5 ns

3ns

7ns

3.5 ns

5ns

MAX2067

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

6 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= VDD= +5.0V, HC mode, attenuator set for maximum gain, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, internal DAC refer­ence used, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

150

140

130

120

SUPPLY CURRENT (mA)

110

100

4.750 5.250

TC = +25°C

GAIN OVER ATTENENUATOR

SETTING vs. RF FREQUENCY

24

19

14

DAC CODE 32

9

4

GAIN (dB)

-1

DAC CODE 128

-6

-11

-16
50 1050

RF FREQUENCY (MHz)

GAIN vs. ATTENUATOR SETTING

24

19

14

9

4

GAIN (dB)

-1

-6

-11

-16

0256

96 22416012832 64 192

TC = -40°C

TC = +85°C

5.1255.0004.875

VCC (V)

DAC CODE 0

DAC CODE 64

DAC CODE 256

850450 650250

fRF = 200MHz

VCC = 4.75V, 5.00V, 5.25V

DAC CODE

MAX2067 toc01

GAIN (dB)

MAX2067 toc04

GAIN (dB)

MAX2067 toc07

INPUT MATCH (dB)

24

23

22

21

20

19

18

17

16

50 1050

TC = -40°C

TC = +25°C

TC = +85°C

850450 650250

RF FREQUENCY (MHz)

GAIN vs. ATTENUATOR SETTING

GAIN vs. RF FREQUENCY

24

19

14

9

1000MHz

4

-1

-6

-11

-16
32 9664 160 224192128

0 256

50MHz

200MHz

450MHz

DAC CODE

INPUT MATCH vs.

ATTENUATOR SETTING

-10

-15

-20

-25

-30

-35

-40

1000MHz

200MHz

0 256

128 19216032 9664 224

DAC CODE

50MHz

450MHz

MAX2067 toc02

GAIN (dB)

MAX2067 toc05

GAIN (dB)

-11

-16

MAX2067 toc08

-10

-15

-20

OUTPUT MATCH (dB)

-25

-30

24

23

22

21

20

19

18

17

16

24

19

14

9

4

-1

-6

0

-5

GAIN vs. RF FREQUENCY

VCC = 4,75V, 5.00V, 5.25V

50 1050

RF FREQUENCY (MHz)

GAIN vs. ATTENUATOR SETTING

f

RF

TC = -40°C, +25°C, +85°C

0256

96 22416012832 64 192

DAC CODE

OUTPUT MATCH vs.

ATTENUATOR SETTING

450MHz

50MHz

0256

1000MHz

200MHz

128 19216032 9664 224

DAC CODE

MAX2067 toc03

850450 650250

= 200MHz

MAX2067 toc06

MAX2067 toc09

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(VCC= VDD= +5.0V, HC mode, attenuator set for maximum gain, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, internal DAC refer­ence used, unless otherwise noted.)

REVERSE ISOLATION OVER ATTENUATOR

SETTING vs. RF FREQUENCY

-25

-35

DAC CODE 0

-45

-55

REVERSE ISOLATION (dB)

-65

-75
50 1050

DAC CODE 255

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

7

6

VCC = 4.75V, 5.00V, 5.25V

5

4

NOISE FIGURE (dB)

3

2

50 450 850 1050650250

RF FREQUENCY (MHz)

80

70

MAX2067 toc10

60

50

40

30

20

S21 PHASE CHANGE (DEG)

10

0

MAX2067 toc13

-10

21

20

19

(dBm)

1dB

18

17

OUTPUT P

16

15

850450 650250

S21 PHASE CHANGE vs.

ATTENUATOR SETTING

REFERENCED TO HIGH GAIN STATE.
POSITIVE PHASE = ELECTRICALLY
SHORTER.

1000MHz

0256

OUTPUT P

TC = +85°C

TC = -40°C

50 450 850 1050650250

128 19216032 9664 224

DAC CODE

vs. RF FREQUENCY

1dB

TC = +25°C

TC = +25°C

RF FREQUENCY (MHz)

450MHz

50MHz

TC = -40°C

TC = +85°C

MAX2067 toc11

200MHz

MAX2067 toc14

NOISE FIGURE vs. RF FREQUENCY

7

6

TC = +85°C

5

4

NOISE FIGURE (dB)

3

2

50 450 850 1050650250

RF FREQUENCY (MHz)

21

20

19

(dBm)

1dB

18

17

OUTPUT P

16

15

OUTPUT P

50 450 850 1050650250

1dB

VCC = 5.25V

VCC = 4.75V

RF FREQUENCY (MHz)

vs. RF FREQUENCY

TC = +25°C

TC = -40°C

VCC = 5.00V

MAX2067 toc12

MAX2067 toc15

OUTPUT IP3 vs. RF FREQUENCY

50

45

40

OUTPUT IP3 (dBm)

35

30

50 450 850 1050650250

OUTPUT IP3 vs.

ATTENUATOR STATE

TC = +25°C, +85°C

TONE = LSB, USB

TC = -40°C, TONE = LSB, USB

DAC CODE

P

TC = +25°C

TC = -40°C

RF FREQUENCY (MHz)

P

= 0dBm/TONE

OUT

TC = +85°C

MAX2067 toc16

OUTPUT IP3 vs. RF FREQUENCY

50

45

40

OUTPUT IP3 (dBm)

35

30

50 450 850 1050650250

VCC = 5.00V

VCC = 4.75V

RF FREQUENCY (MHz)

P

= 0dBm/TONE

OUT

VCC = 5.25V

MAX2067 toc17

OUTPUT IP3 (dBm)

50

45

40

35

30

0 256192128 2241609632 64

= -3dBm/TONE

OUT

= 200MHz

f

RF

MAX2067 toc18