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

MAX2067

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

8 _______________________________________________________________________________________

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.)

2nd HARMONIC vs. RF FREQUENCY

MAX2067 toc19

RF FREQUENCY (MHz)

2nd HARMONIC (dBc)

90

40

50

60

70

80

50 450 850 1050650250

TC = -40°C, +25°C, +85°C

P

OUT

= 3dBm

2nd HARMONIC vs. RF FREQUENCY

MAX2067 toc20

RF FREQUENCY (MHz)

2nd HARMONIC (dBc)

90

80

70

60

50

40

50 450 850 1050650250

VCC = 5.25V

VCC = 4.75V

VCC = 5.00V

P

OUT

= 3dBm

2nd HARMONIC vs.

ATTENUATOR STATE

MAX2067 toc21

DAC CODE

2nd HARMONIC (dBc)

80

70

75

65

60

0 96 160 22432 25619212864

TC = +25°C

P

OUT

= 0dBm

f

RF

= 200MHz

TC = -40°C

TC = +85°C

3rd HARMONIC vs. FREQUENCY

MAX2067 toc22

RF FREQUENCY (MHz)

3rd HARMONIC (dBc)

110

80

90

100

70

60

50 450 850 1050650250

TC = +25°C

P

OUT

= 3dBm

TC = -40°C

TC = +85°C

3rd HARMONIC vs. RF FREQUENCY

MAX2067 toc23

RF FREQUENCY (MHz)

3rd HARMONIC (dBc)

110

100

90

80

70

60

50 450 850 1050650250

VCC = 5.25V

VCC = 4.75V

VCC = 5.00V

P

OUT

= 3dBm

3rd HARMONIC vs.

ATTENUATOR STATE

MAX2067 toc24

DAC CODE

3rd HARMONIC (dBc)

110

80

90

100

70

60

0 96 160 22432 25619212864

TC = +25°C

P

OUT

= 0dBm

f

RF

= 200MHz

TC = -40°C

TC = +85°C

OIP2 vs. RF FREQUENCY

MAX2067 toc25

RF FREQUENCY (MHz)

OIP2 (dBm)

90

40

50

60

70

80

50 450 850 1050650250

TC = -40°C, +25°C, +85°C

P

OUT

= 0dBm/TONE

OIP2 vs. RF FREQUENCY

MAX2067 toc26

RF FREQUENCY (MHz)

OIP2 (dBm)

90

80

70

60

50

40

50 450 850 1050650250

VCC = 5.25V

VCC = 4.75V

VCC = 5.00V

P

OUT

= 0dBm/TONE

OIP2 vs. ATTENUATOR STATE

MAX2067 toc27

DAC CODE

OIP2 (dBm)

80

60

70

50

40

0 96 160 22432 25619212864

TC = +25°C

P

OUT

= -3dBm/TONE

f

RF

= 200MHz

TC = -40°C

TC = +85°C

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

_______________________________________________________________________________________ 9

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.)

DAC VOLTAGE USING INTERNAL

REFERENCE vs. DAC CODE

3.0

2.5

2.0

1.5

DAC VOLTAGE (V)

1.0

0.5

0

0 96 160 22432 25619212864

TC = -40°C, +25°C, +85°C

DAC CODE

DAC VOLTAGE DRIFT USING

INTERNAL REFERENCE vs. DAC CODE

0.05

0.04

0.03

TC CHANGED FROM +25°C to -40°C

0.02

0.01

0

-0.01

-0.02

DAC VOLTAGE CHANGE (V)

-0.03
TC CHANGED FROM +25°C to +85°C

-0.04

-0.05

0 96 160 22432 25619212864

DAC CODE

MAX2067 toc28

MAX2067 toc30

DAC VOLTAGE (V)

0.0100

0.0075

0.0050

0.0025

-0.0025

DAC VOLTAGE CHANGE (V)

-0.0050

-0.0075

-0.0100

DAC VOLTAGE USING INTERNAL

REFERENCE vs. DAC CODE

3.0

2.5

2.0

1.5

1.0

0.5

0

0 96 160 22432 25619212864

VCC = 4.75V, 5.00V, 5.25V

DAC CODE

DAC VOLTAGE DRIFT USING

INTERNAL REFERENCE vs. DAC CODE

VCC CHANGED FROM 5.00V to 5.25V

0

VCC CHANGED FROM 5.00V to 4.75V

0 96 160 22432 25619212864

DAC CODE

MAX2067 toc29

MAX2067 toc31

MAX2067

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

10 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC= VDD= +5.0V, attenuator only, maximum gain, PIN= -20dBm, and TC= +25°C, unless otherwise noted.)

GAIN vs. RF FREQUENCY

0

-1

-2

GAIN (dB)

-3

-4

-5
50 1050

(ATTENUATOR ONLY)

TC = -40°C

TC = +85°C

TC = +25°C

RF FREQUENCY (MHz)

GAIN vs. RF FREQUENCY

0

MAX2067 toc32

850450 650250

-1

-2

GAIN (dB)

-3

-4

-5
50 1050

(ATTENUATOR ONLY)

MAX2067 toc33

VCC = 4.75V, 5.00V, 5.25V

850450 650250

RF FREQUENCY (MHz)

GAIN vs. RF FREQUENCY

(LOW-CURRENT MODE)

MAX2067 toc36

RF FREQUENCY (MHz)

GAIN (dB)

22

23

24

19

20

17

18

21

16

50 450 850 1050650250

VCC = 4.75V, 5.00V, 5.25V

GAIN vs. RF FREQUENCY

(LOW-CURRENT MODE)

MAX2067 toc35

RF FREQUENCY (MHz)

GAIN (dB)

22

23

24

19

20

17

18

21

16

50 450 850 1050650250

TC = +25°C

TC = -40°C

TC = +85°C

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(LOW-CURRENT MODE)

MAX2067 toc34

VCC (V)

SUPPLY CURRENT (mA)

65

75

85

55

4.750 5.125 5.2504.875 5.000

TC = +25°C

TC = -40°C

TC = +85°C

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 11

O

Typical Operating Characteristics (continued)

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

INPUT MATCH vs. ATTENUATOR SETTING

(LOW-CURRENT MODE)

0

-10

-20

-30

INPUT MATCH (dB)

-40

1000MHz

200MHz

50MHz

450MHz

MAX2067 toc37

OUTPUT MATCH vs. ATTENUATOR SETTING

(LOW-CURRENT MODE)

0

-5

-10

-15

-20

OUTPUT MATCH (dB)

50MHz

-25

450MHz

1000MHz

200MHz

MAX2067 toc38

NOISE FIGURE (dB)

NOISE FIGURE vs. RF FREQUENCY

(LOW-CURRENT MODE)

7

6

5

4

3

TC = +85°C

TC = +25°C

TC = -40°C

MAX2067 toc39

-50
0 96 160 22432 25619212864

NOISE FIGURE vs. RF FREQUENCY

7

6

5

4

NOISE FIGURE (dB)

3

2

50 450 850 1050650250

DAC CODE

(LOW-CURRENT MODE)

VCC = 4.75V, 5.00V, 5.25V

RF FREQUENCY (MHz)

MAX2067 toc40

-30

18

17

(dBm)

16

1dB

15

OUTPUT P

14

13

0 96 160 22432 25619212864

OUTPUT P

(LOW-CURRENT MODE)

TC = -40°C

TC = +85°C

50 450 850 1050650250

RF FREQUENCY (MHz)

DAC CODE

vs. RF FREQUENCY

1dB

TC = +25°C

MAX2067 toc41

2

18

17

(dBm)

16

1dB

15

OUTPUT P

14

13

50 450 850 1050650250

UTPUT P

(LOW-CURRENT MODE)

VCC = 5.25V

50 450 850 1050650250

RF FREQUENCY (MHz)

vs. RF FREQUENCY

1dB

VCC = 5.00V

RF FREQUENCY (MHz)

MAX2067 toc42

VCC = 4.75V

MAX2067

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

12 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

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

OUTPUT IP3 vs. RF FREQUENCY

(LOW-CURRENT MODE)

45

40

P

= 0dBm/TONE

OUT

TC = -40°C

MAX2067 toc43

OUTPUT IP3 vs. RF FREQUENCY

(LOW-CURRENT MODE)

45

VCC = 5.25V

40

P

= 0dBm/TONE

OUT

VCC = 5.00V

MAX2067 toc44

OUTPUT IP3 vs. ATTENUATOR STATE

(LOW-CURRENT MODE)

45

TC = +25°C, +85°C

40

TONE = LSB, USB

P

OUT

f

= -3dBm/TONE

= 200MHz

RF

MAX2067 toc45

35

OUTPUT IP3 (dBm)

30

25

TC = +85°C

50 450 850 1050650250

RF FREQUENCY (MHz)

2nd HARMONIC vs. RF FREQUENCY

(LOW-CURRENT MODE)

90

80

70

60

2nd HARMONIC (dBc)

50

40

50 450 850 1050650250

TC = -40°C

RF FREQUENCY (MHz)

3rd HARMONIC vs. RF FREQUENCY

(LOW-CURRENT MODE)

100

90

TC = +25°C

TC = +85°C

P

= 3dBm

OUT

TC = +25°C

P

= 3dBm

OUT

TC = -40°C

35

OUTPUT IP3 (dBm)

30

25

90

MAX2067 toc46

80

70

60

2nd HARMONIC (dBc)

50

40

100

MAX2067 toc49

90

VCC = 4.75V

50 450 850 1050650250

RF FREQUENCY (MHz)

2nd HARMONIC vs. RF FREQUENCY

(LOW-CURRENT MODE)

P

VCC = 5.25V

VCC = 4.75V

50 450 850 1050650250

RF FREQUENCY (MHz)

OUT

VCC = 5.00V

3rd HARMONIC vs. RF FREQUENCY

(LOW-CURRENT MODE)

P

OUT

VCC = 5.00V

VCC = 5.25V

= 3dBm

= 3dBm

OUTPUT IP3 (dBm)

MAX2067 toc47

2nd HARMONIC (dBc)

100

MAX2067 toc50

35

30

0256192128 2241609632 64

TC = -40°C, TONE = LSB, USB

DAC CODE

2nd HARMONIC vs. ATTENUATOR STATE

(LOW-CURRENT MODE)

90

80

70

60

50

0 96 160 22432 25619212864

TC = +25°C

TC = -40°C

DAC CODE

P

OUT

= 200MHz

f

RF

TC = +85°C

3rd HARMONIC vs. ATTENUATOR STATE

(LOW-CURRENT MODE)

P

OUT

= 200MHz

f

95

TC = +25°C

90

RF

= 0dBm

MAX2067 toc48

= 0dBm

MAX2067 toc51

80

3rd HARMONIC (dBc)

70

60

50 450 850 1050650250

TC = +25°C

TC = +85°C

RF FREQUENCY (MHz)

80

3rd HARMONIC (dBc)

70

60

50 450 850 1050650250

VCC = 4.75V

RF FREQUENCY (MHz)

85

80

3rd HARMONIC (dBc)

75

70

TC = -40°C

0 96 160 22432 25619212864

TC = +85°C

DAC CODE

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 13

Typical Operating Characteristics (continued)

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

90

80

70

OIP2 (dBm)

60

50

40

50 450 850 1050650250

OIP2 vs. RF FREQUENCY

(LOW-CURRENT MODE)

P

= 0dBm/TONE

TC = -40°C

TC = +85°C

RF FREQUENCY (MHz)

OUT

TC = +25°C

MAX2067 toc52

90

80

70

OIP2 (dBm)

60

50

40

50 450 850 1050650250

OIP2 vs. RF FREQUENCY

(LOW-CURRENT MODE)

P

VCC = 5.25V

VCC = 5.00V

VCC = 4.75V

RF FREQUENCY (MHz)

= 0dBm/TONE

OUT

MAX2067 toc53

OIP2 (dBm)

OIP2 vs. ATTENUATOR STATE

(LOW-CURRENT MODE)

90

80

70

60

50

40

0 96 160 22432 25619212864

TC = -40°C

TC = +85°C

DAC CODE

P

= -3dBm/TONE

OUT

= 200MHz

f

RF

TC = +25°C

MAX2067 toc54

MAX2067

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

14 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC= VDD= +3.3V, 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

75

TC = -40°C

65

55

SUPPLY CURRENT (mA)

TC = +85°C

45

3.00 3.45 3.603.15 3.30

INPUT MATCH vs. ATTENUATOR SETTING

0

-10

1000MHz

-20

INPUT MATCH (dB)

-30

-40
0 96 160 22432 25619212864

TC = +25°C

VCC (V)

450MHz

DAC CODE

50MHz

VCC = 3.3V

200MHz

MAX2067 toc55

GAIN (dB)

MAX2067 toc58

-10

-15

-20

OUTPUT MATCH (dB)

-25

-30

24

23

22

21

20

19

18

17

16

50 450 850 1050650250

TC = -40°C

TC = +85°C

RF FREQUENCY (MHz)

VCC = 3.3V

TC = +25°C

OUTPUT MATCH vs. ATTENUATOR SETTING

GAIN vs. RF FREQUENCY

0

-5

1000MHz

0 96 160 22432 25619212864

DAC CODE

450MHz

VCC = 3.3V

50MHz

200MHz

MAX2067 toc56

MAX2067 toc59

24

23

22

21

20

GAIN (dB)

19

18

17

16

VCC = 3.3V

50 450 850 1050650250

VCC = 3.6V

VCC = 3.0V

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

7

GAIN vs. RF FREQUENCY

6

5

4

NOISE FIGURE (dB)

3

2

TC = +85°C

TC = -40°C

50 450 850 1050650250

RF FREQUENCY (MHz)

MAX2067 toc57

VCC = 3.3V

MAX2067 toc60

TC = +25°C

1dB

17

16

15

14

13

12

11

10

9

50 450 850650 1050250

OUTPUT P

VCC = 3.3V

VCC = 3.0V

1dB

RF FREQUENCY (MHz)

NOISE FIGURE vs. RF FREQUENCY

7

6

5

4

NOISE FIGURE (dB)

3

2

VCC = 3.0V

50

450

RF FREQUENCY (MHz)

VCC = 3.6V

650250

VCC = 3.3V

850

1050

MAX2067 toc61

17

16

15

14

(dBm)

1dB

13

12

OUTPUT P

11

10

9

OUTPUT P

50 450 850 1050650250

vs. RF FREQUENCY

1dB

TC = -40°C

TC = +85°C

TC = +25°C

RF FREQUENCY (MHz)

VCC = 3.3V

MAX2067 toc62

(dBm)

OUTPUT P

vs. RF FREQUENCY

VCC = 3.6V

MAX2067 toc63

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 15

Typical Operating Characteristics (continued)

(VCC= VDD= +3.3V, HC mode, attenuator set for maximum gain, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, internal DAC refer­ence used, unless otherwise noted.)

OUTPUT IP3 vs. RF FREQUENCY

50

45

40

35

OUTPUT IP3 (dBm)

30

25

20

50 450 850 1050650250

TC = +25°C

TC = +85°C

RF FREQUENCY (MHz)

2nd HARMONIC vs. RF FREQUENCY

80

70

60

50

2nd HARMONIC (dBc)

40

TC = +25°C

TC = -40°C

VCC = 3.3V

P

= 0dBm/TONE

OUT

TC = -40°C

VCC = 3.3V

P

OUT

TC = +85°C

= 3dBm

MAX2067 toc64

OUTPUT IP3 (dBm)

MAX2067 toc67

2nd HARMONIC (dBc)

OUTPUT IP3 vs. RF FREQUENCY

50

45

40

35

30

25

20

50 450 850 1050650250

VCC = 3.3V

VCC = 3.0V

RF FREQUENCY (MHz)

2nd HARMONIC vs. RF FREQUENCY

80

70

VCC = 3.3V

60

50

40

VCC = 3.0V

P

= 0dBm/TONE

OUT

VCC = 3.6V

P

VCC = 3.6V

OUT

= 3dBm

MAX2067 toc65

OUTPUT IP3 (dBm)

MAX2067 toc68

2nd HARMONIC (dBc)

OUTPUT IP3 vs. ATTENUATOR STATE

45

TC = +25°C, +85°C

TONE = LSB, USB

40

35

30

25

0256192128 2241609632 64

TC = -40°C, TONE = LSB, USB

DAC CODE

VCC = 3.3V

P

= -3dBm/TONE

OUT

= 200MHz

f

RF

2nd HARMONIC vs. ATTENUATOR STATE

80

TC = +85°C

70

60

T

= +25°C

C

50

TC = -40°C

VCC = 3.3V

P

OUT

= 200MHz

f

RF

= 0dBm

MAX2067 toc66

MAX2067 toc69

30

50 450 850 1050650250

RF FREQUENCY (MHz)

3rd HARMONIC vs. RF FREQUENCY

110

100

90

80

70

3rd HARMONIC (dBc)

60

50

50 450 850 1050650250

TC = +25°C

TC = +85°C

RF FREQUENCY (MHz)

VCC = 3.3V

= 3dBm

P

OUT

TC = -40°C

MAX2067 toc70

3rd HARMONIC (dBc)

30

50 450 850 1050650250

RF FREQUENCY (MHz)

3rd HARMONIC vs. RF FREQUENCY

110

100

90

80

70

60

50

VCC = 3.3V

VCC = 3.0V

50 450 850 1050650250

RF FREQUENCY (MHz)

P

OUT

VCC = 3.6V

= 3dBm

MAX2067 toc71

3rd HARMONIC (dBc)

40

0256192128 2241609632 64

DAC CODE

3rd HARMONIC vs. ATTENUATOR STATE

100

90

80

70

60

0256192128 2241609632 64

TC = +85°C

TC = -40°C

TC = +25°C

DAC CODE

VCC = 3.3V

P

OUT

= 200MHz

f

RF

= 0dBm

MAX2067 toc72

MAX2067

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

16 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC= VDD= +3.3V, HC mode, attenuator set for maximum gain, PIN= -20dBm, fRF= 200MHz, and TC= +25°C, internal DAC refer­ence used, unless otherwise noted.)

70

OIP2 vs. RF FREQUENCY

60

50

OIP2 (dBm)

40

30

TC = +25°C

50 450 850 1050650250

RF FREQUENCY (MHz)

TC = -40°C

VCC = 3.3V

= 0dBm/TONE

P

OUT

TC = +85°C

MAX2067 toc73

70

60

50

OIP2 (dBm)

40

30

50 450 850 1050650250

OIP2 vs. RF FREQUENCY

P

OUT

VCC = 3.3V

VCC = 3.0V

RF FREQUENCY (MHz)

VCC = 3.6V

= 0dBm/TONE

MAX2067 toc74

70

60

50

OIP2 (dBm)

40

30

0256192128 2241609632 64

OIP2 vs. ATTENUATOR STATE

VCC = 3.3V

P

TC = +85°C

TC = +25°C

DAC CODE

= -3dBm/TONE

OUT

= 200MHz

f

RF

TC = -40°C

MAX2067 toc75

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 17

Pin Description

PIN NAME DESCRIPTION

1, 16, 19, 22, 24–28,

30, 31, 33–36

2 VREF_SELECT

3 VDAC_EN

4 DATA SPI Data Digital Input

5 CLK SPI Clock Digital Input
6 CS SPI Chip-Select Digital Input

7 VDD_LOGIC

8–15, 23, 29 GND Ground. See the Pin-Compatibility Considerations section.

17 AMP_OUT Driver Amplifier Output (50Ω). See the Typical Application Circuit for details.

18 RSET Driver Amplifier Bias-Setting Input. See the External Bias section.

20 AMP_IN Driver Amplifier Input (50Ω). See the Typical Application Circuit for details.

21 VCC_AMP

32 ATTEN_OUT

37 ATTEN_IN

38 VCC_ANALOG

39 ANALOG_VCTRL Analog Attenuator Voltage-Control Input

40 VREF_IN External DAC Voltage Reference Input

—EP

GND Ground

DAC Reference Voltage Selection Logic Input. Logic 1 = internal DAC reference
voltage, Logic 0 = external DAC reference voltage. Logic input disabled (don’t care)
when VDAC_EN = Logic 0.

DAC Enable/Disable Logic Input. Logic 0 = disable DAC circuit, Logic 1 = enable
DAC circuit.

Digital Logic Supply Input. Connect to the digital logic power supply, V
to GND with a 10nF capacitor as close as possible to the pin.

Driver Amplifier Supply Voltage Input. Connect to the V
GND with 1000pF and 10nF capacitors as close as possible to the pin, with the
smaller value capacitor closer to the part.

Analog Attenuator Output. Internally matched to 50Ω. Requires an external DC­blocking capacitor.

Analog Attenuator Input. Internally matched to 50Ω. Requires an external DC­blocking capacitor.

Analog Bias and Control Supply Voltage Input. Bypass to GND with a 10nF
capacitor as close as possible to the pin.

Exposed Pad. Internally connected to GND. Connect EP to ground for proper RF
performance and enhanced thermal dissipation.

, Bypass

DD

power supply. Bypass to

CC

MAX2067

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

18 ______________________________________________________________________________________

Detailed Description

The MAX2067 high-linearity analog variable-gain ampli­fier is a general-purpose, high-performance amplifier
designed to interface with 50Ω systems operating in the
50MHz to 1000MHz frequency range.

The MAX2067 integrates an analog attenuator to provide
31dB of total gain control, as well as a driver amplifier
optimized to provide high gain, high IP3, low noise figure,
and low power consumption. For applications that do not
require high linearity, the bias current of the amplifier can
be adjusted by an external resistor to further reduce
power consumption.

The analog attenuator is controlled using an external
voltage or through the SPI-compatible interface using
an on-chip DAC. Because each stage has its own exter­nal 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 stand-alone 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, or a single +3.3V supply with slightly reduced
performance, and has adjustable bias to trade current
consumption for linearity performance.

Analog Attenuator

The MAX2067’s analog attenuator has a dynamic range
of 31dB and is controlled using an external voltage or
through the 3-wire SPI using an on-chip 8-bit DAC. See
the

Applications Information

section and Table 1 for
attenuator programming details. The attenuator can be
used for both static and dynamic power control.

Driver Amplifier

The MAX2067 includes a high-performance driver with
a fixed gain of 22dB. The driver amplifier circuit is opti­mized for high linearity for the 50MHz to 1000MHz fre­quency range.

Applications Information

Attenuator Control

The analog attenuator is controlled by either an external
control voltage applied at ANALOG_VCTRL (pin 39) or
by the on-chip 8-bit DAC. Through the utilization of this
control DAC, the user can easily adjust the analog
attenuation in 0.12dB increments through a simple SPI
command. The DAC enable/disable logic-input pin
(VDAC_EN), and the DAC reference voltage selection
logic-input pin (VREF_SELECT) determine how the
attenuator is controlled. When the DAC is enabled,
either the on-chip voltage reference or the external volt­age reference can be selected. See Table 1 for the
attenuator and DAC operation truth table.

Although this on-chip DAC eliminates the need for an
external analog control voltage, the user still has the
option of disabling the DAC and using an external ana­log control voltage for instances where additional atten­uation resolution is needed, or in cases where the gain
trim/automatic gain-control (AGC) loop is purely analog.

SPI Interface and Attenuator Settings

The MAX2067 employs a 3-wire SPI/MICROWIRE™­compatible serial interface to program the on-chip DAC.
Eight bits of data are shifted in MSB first and framed by
CS. When CS is low, the clock is active and data is
shifted on the rising edge of the clock. When CS transi­tions high, the data is latched and the attenuator setting
changes (Figure 1). See Table 2 for details on the SPI
data format.

Table 1. Control Logic

X = Don’t care.

MICROWIRE is a trademark of National Semiconductor Corp.

VDAC_EN VR EF _ SEL EC T ANALOG ATTENUATOR D/A CONVERTER

0 X Controlled by external control voltage Disabled

1 1 Controlled by on-chip DAC Enabled (DAC uses on-chip voltage reference)

1 0 Controlled by on-chip DAC E nab l ed ( D AC uses exter nal vol tag e r efer ence)

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 19

Figure 1. SPI Timing Diagram

Table 2. SPI Data Format

MSB LSB

DATA

CLOCK

CS

DN

t

EWS

FUNCTION BIT DESCRIPTION

D7 Bit 7 (MSB) of on-chip DAC used to program the analog attenuator

D6 Bit 6 of DAC

D5 Bit 5 of DAC

On-Chip DAC

D4 Bit 4 of DAC

D3 Bit 3 of DAC

D2 Bit 2 of DAC

D1 Bit 1 of DAC

D0 (LSB) Bit 0 (LSB) of the on-chip DAC

D(N - 1) D1 D0

t

CS

t

CH

t

CW

t

ES

t

EW

MAX2067

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

20 ______________________________________________________________________________________

Table 4. Typical Application Circuit Component Values (HC Mode)

External Bias

Bias currents for the driver amplifier are set and opti­mized through external resistors. Resistors R1 and R1A
connected to RSET (pin 18) set the bias current for the
amplifier. The external biasing resistor values can be
increased for reduced current operation at the expense
of performance. See Tables 4 and 5 for details.

Pin-Compatibility Considerations

The MAX2067 is a simplified version of the MAX2065
analog/digital VGA. The MAX2067 does not contain a
digital attenuator and parallel inputs D0–D4. The asso­ciated input/output pins are internally connected to
ground (Table 3). Ground the unused input/output pins
to optimize isolation. (See the

Typical Application

Circuit.)

+5V and +3.3V Supply Voltage

The MAX2067 features an optional +3.3V supply voltage
operation with slightly reduced linearity performance.

Layout Considerations

The pin configuration of the MAX2067 has been opti­mized to facilitate a very compact physical layout of the
device and its associated discrete components.

The exposed paddle (EP) of the MAX2067’s 40-pin thin
QFN-EP package provides a low thermal-resistance
path to the die. It is important that the PCB on which the
MAX2067 is mounted be designed to conduct heat
from the EP. In addition, provide the EP with a low­inductance path to electrical ground. The EP must be
soldered to a ground plane on the PCB, either directly
or through an array of plated via holes.

Table 3. MAX2065/MAX2067 Pin
Comparison

PIN MAX2065 MAX2067

8 SER/PAR GND

9 STATE_A GND

10 STATE_B GND

11 D4 GND

12 D3 GND

13 D2 GND

14 D1 GND

15 D0 GND

23 ATTEN2_OUT GND

29 ATTEN2_IN GND

DESIGNATION VALUE SIZE VENDOR DESCRIPTION

C1, C2, C7, C12 10nF 0402 Murata Mfg. Co., Ltd. X7R

C3, C4, C6, C8, C9 1000pF 0402 Murata Mfg. Co., Ltd. C0G ceramic capacitors

C10, C11 150pF 0402 Murata Mfg. Co., Ltd. C0G ceramic capacitors

L1 470nH 1008 Coilcraft, Inc. 1008CS-471XJLC

R1, R1A 10Ω 0402 Panasonic Corp. 1%

R2 (+3.3V applications only) 1kΩ 0402 Panasonic Corp. 1%

R3 (+3.3V applications only) 2kΩ 0402 Panasonic Corp. 1%

R4 (+5V applications and

using internal DAC only)

U1 —

47kΩ 0402 Panasonic Corp. 1%

40-pin thin QFN-EP

(6mm x 6mm)

Maxim Integrated

Products, Inc.

MAX2067ETL+

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

______________________________________________________________________________________ 21

Table 5. Typical Application Circuit Component Values (LC Mode)

DESIGNATION VALUE SIZE VENDOR DESCRIPTION

C1, C2, C7, C12 10nF 0402 Murata Mfg. Co., Ltd. X7R

C3, C4, C6, C8, C9 1000pF 0402 Murata Mfg. Co., Ltd. C0G ceramic capacitors

C10, C11 150pF 0402 Murata Mfg. Co., Ltd. C0G ceramic capacitors

L1 470nH 1008 Coilcraft, Inc. 1008CS-471XJLC

R1 24Ω 0402 Vishay 1%

R1A 10nF 0402 Murata Mfg. Co., Ltd. X7R

R2 (+3.3V applications only) 1kΩ 0402 Panasonic Corp. 1%

R3 (+3.3V applications only) 2kΩ 0402 Panasonic Corp. 1%

R4 (+5V applications and

using internal DAC only)

U1 —

47kΩ 0402 Panasonic Corp. 1%

40-pin thin QFN-EP

(6mm x 6mm)

Maxim Integrated

Products, Inc.

MAX2067ETL+

MAX2067

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

22 ______________________________________________________________________________________

Typical Application Circuit

V

CC

ANALOG_VCTRL

VREF_IN

V

DD

C1

C12

R4

C11

GND

VREF_SELECT

DATA

CLK GND

CS GND

VDD_LOGIC GND

GND

GND

GND

C10

VCC_ANALOG

38

13

GND

ATTEN_IN

37

VREF

DAC

14

GND

ANALOG_VCTRL

VREF_IN

+

130

2

3

4

5

6

40

11

GND

39

SPI INTERFACE

12

GND

V

CC

RF INPUT

C9

GND

36

35

ANALOG ATTENUATOR

EP

15

16

GND GND

GND

L1

34

MAX2067

DRIVER AMP

17

AMP_OUT GND

GND

33

18

RSET

32

19

R1

R1A*

ATTEN_OUT

31

29

28

27

26

25

247

238

229

2110

20

GND

AMP_IN GND

GND

GND

GNDVDAC_EN

GND

GND

GND

VCC_AMP

R2

R3

C8

V

CC

C7C6

C3

C2

NOTE: REMOVE R4 AND C10 WHEN DRIVING
ANALOG_VCTRL WITH AN EXTERNAL VOLTAGE.

C4

RF OUTPUT

*IN LC MODE, R1A IS A 10nF CAPACITOR.
SEE TABLE 5 FOR DETAILS.

MAX2067

50MHz to 1000MHz High-Linearity,

Serial/Analog-Controlled VGA

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 ____________________

23

© 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

Pin Configuration/Functional Block Diagram

Chip Information

PROCESS: SiGe BiCMOS

Package Information

For the latest package outline information, go to

www.maxim-ic.com/packages

.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

40 Thin QFN-EP T4066-3

21-0141

TOP VIEW

VCC_ANALOG

+

40

GND

1

2

3

DATA

4

CLK GND

5

CS GND

6

VDD_LOGIC GND

GND GND

GND GND

GND VCC_AMP

11

38

39

SPI INTERFACE

13

12

GND

36

37

ANALOG ATTENUATOR

VREF

DAC

15

14

GND

GND

ATTEN_OUT

33

35

34

32

31

MAX2067

DRIVER AMP

16

17

18

19

20

GND

30

GNDVREF_SELECT

29

GNDVDAC_EN

28

GND

27

26

25

247

238

229

2110

GND

GND ANALOG_VCTRL

GND VREF_IN

GND

GND ATTEN_IN

EXPOSED PAD ON BOTTOM.

CONNECT EP TO GND.

GND GND

TQFN

AMP_OUT

RSET

GND

AMP_IN GND