TQM879008_15 Datasheet, PDF (1/10 Pages) TriQuint Semiconductor – 1.5-2.7 GHz W Digital Variable Gain Amplifier

TQM879008
1.5-2.7 GHz ½ W Digital Variable Gain Amplifier
Applications
• 3G / 4G Wireless Infrastructure
• CDMA, WCDMA, LTE
• Repeaters
• ISM Infrastructure
28-pin 6x6 mm leadless SMT package
Product Features
• 1.5-2.7 GHz Frequency Range
• 41.1 dB Maximum Gain at 2.5 GHz
• 31.5 dB Gain Range in 0.5 dB Steps
• +47.5 dBm Output IP3
• +27.3 dBm Output P1dB
• Fully Internally Matched Module
• Integrated Blocking Capacitors, Bias Inductors
• 3-wire SPI Control Programming
General Description
The TQM879008 is a digital variable gain amplifier
(DVGA) featuring high linearity over the entire gain
control range. This amplifier module integrates two gain
blocks, a digital-step attenuator (DSA), and a high
linearity ½ W amplifier. The module has the added
feature of integrating all matching components, bias
chokes and blocking capacitors. The internal 6-bit DSA
provides a 31.5 dB gain control range in 0.5 dB steps,
and is controlled with a serial periphery interface
(SPITM).
The TQM879008 features variable gain from 10 dB to
41.1dB at 2.5 GHz, +47.5 dBm output IP3, and +27.3
dBm P1dB. The module operates from a single +5V
supply and is available in a compact 28-pin 6x6 mm
leadless SMT package.
The TQM879008 is pin compatible with the TQM829007
(0.7-1.0GHz, 0.25W DVGA) and TQM879006 (1.4-
2.7GHz, 0.25W DVGA). This allows one to size the right
type of device for specific system level requirements as
well as making the DVGA family ideal for applications
where a common PCB layout is used for different
frequency bands.
Functional Block Diagram
LE 1
DATA 2
CLK 3
NC 4
GND 5
RFIN 6
GND 7
S
P _DSA
I
AMP2
Matching
AMP3
AMP1
DC Biasing
Matching
DC Biasing
21 GND
20 GND
19 GND
18 GND
17 GND
16 RFOUT
15 GND
Backside Pad
GND
Pin Configuration
Pin No.
1
2
3
4, 22
6
8
14
16
28
5, 7, 9-13, 15,17-21, 22-27
Backside Pad
Label
LE
DATA
CLK
NC
RFIN
VCC_AMP1 / AMP2
VCC_AMP3
RFOUT
VCC_SPI
GND
GND
Ordering Information
Part No.
Description
TQM879008
1.5-2.7 GHz Digital VGA
TQM879008-PCB
Fully Assembled Evaluation Board
Includes USB control board, EVH
Standard T/R size = 2500 pieces on a 13” reel.
Datasheet: Rev I 01-06-14
© 2013 TriQuint
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Disclaimer: Subject to change without notice
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