TQM879026
0.7−4 GHz ¼W Digital Variable Gain Amplifier
Applications
3G / 4G Wireless Infrastructure
CDMA, WCDMA, LTE
Repeaters
4x4 mm 24 Pin leadless SMT Package
Product Features
0.7-4.0 GHz Frequency Range
32 dB Maximum Gain at 2.14 GHz
31.5 dB Gain Range in 0.5 dB Steps
+42.5 dBm Output IP3
+24 dBm Output P1dB
1.6 dB Noise Figure
3-wire SPI Control Programming
Functional Block Diagram
DSA Out
NC
NC
NC
NC
19
18
17
DSA
16
15
6-BIT
SPI
14
13
Pin 1 Marking
24
23
22
21
NC
NC
DSA In
NC
Amp1 Out / V
CC1
NC
1
2
3
4
5
6
20
Amp2 In
NC
NC
Amp2 Out / V
CC2
LE
SID
CLK
10
11
NC
Amp1 In
SOD
V
DD
NC
NC
12
7
8
9
Backside Paddle
RF/DC GND
General Description
The TQM879026 is a digital variable gain amplifier
(DVGA) featuring high linearity and digital variable gain
control in 0.5 dB step sizes. This DVGA integrates a
gain block, a digital-step attenuator (DSA), and a high
linearity ¼-watt amplifier into a compact 4x4 mm
package. The internal 6-bit DSA provides a 31.5 dB
gain control range and is controlled with a serial
TM
periphery interface (SPI ). The individual stages are
accessible to external ports to allow for optimization of
the last stage amplifier for individual bands and also
allowing other functional blocks to be added in-
between the stages.
The TQM879026 features variable gain from 1 dB to
32 dB at 2.14 GHz, +42.5 dBm output IP3, and +24
dBm P1dB while only consuming 176 mA current from
a 5V supply. The module is available in a compact 24-
pin 4x4 mm leadless SMT package.
Pin Configuration
Pin No.
1,2,4,6,7,9,11,17,18,19,21,22,24
3
5
8
10
12
13
14
15
16
20
23
Backside Paddle
Symbol
NC (No Connect)
DSA In
Amp1 Out / Vcc1
Amp1 In
SOD
V
DD
CLK
SID
LE
Amp2 Out / Vcc2
Amp2 In
DSA Out
RF/DC Ground
Ordering Information
Part No.
TQM879026
Description
¼ W 0.7-4.0 GHz DVGA
2140 MHz Evaluation Board
TQM879026-PCB2140
Includes USB control board
Standard T/R size = 2500 pieces on a 13” reel
Data Sheet: Rev B 12/14/2012
© 2012 TriQuint Semiconductor, Inc.
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Disclaimer: Subject to change without notice
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