TQM879006A

1.4 −2.7 GHz ¼ W Digital Variable Amplifier

Datasheet: Rev R 11-15-13

- 7 of 11 -

Disclaimer: Subject to change without notice

© 2013 TriQuint

www.triquint.com

Detailed Device Description

The TQM879006A is a 50 Ω internally matched digital variable gain amplifier (DVGA) featuring high linearity over the

entire gain control range. The amplifier module features the integration of a low noise amplifier gain block, a digital

step attenuator (DSA), along with a high linearity ¼W amplifier as shown in the functional diagram below. The

module is unconditionally stable. Internal blocking capacitors and bias structures keep external parts count to a

minimum. The DVGA has an operational frequency range from 1.4 - 2.7 GHz.

Functional Schematic Diagram

AMP1

DSA

SPI

AMP2

M

M

DC Bias

DC Bias

LE

DATA

CLK

Pin 1

Pin 6

Pin 16

Pin 2

Pin 3

Pin 14

Pin 8

DC Block

DC Block

DC Block

DC Block

Where M = Matching Network.

Chain Analysis Table

This table provides the typical performance of individual stages in the module as well as overall module performance.

Parameter

AMP1

DSA

AMP2

Overall Module

Units

Gain

19

-1.8

14.5

31.7

dB

NF

1.3

1.8

4.0

1.5

dB

OIP3

36

55

43

43

dBm

P1dB

20

28.5

24.5

24.5

dBm

Icc

85

2.0

87

174

mA