TAT3814
Applications
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5-300 MHz Variable Gain Return Path Amplifier
Return Path Amplifier
System Amplifier
Line Amplifier
DOCSIS Return Path VGA
Bonded Channel Cable Modem Return Path
6x6 mm 40 Pin leadless SMT Package
Product Features
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Integrates Attenuation and Amp Functionality
5-300 MHz Performance
75 Ohm
Variable gain attenuator: 20 dB typical range
Max gain setting: 36 dB typical
15 dB typical return loss across gain range
5 dB typical Noise Figure
40dBm typical OIP3
+8 V Supply (Lower supply voltages possible)
320 mA Operating Current
Compact 6x6 mm integrated package
Functional Block Diagram
40 V1BYP
31 V3ADJ
38 VCC1
39 GND
37 GND
36 GND
35 GND
34 GND
33 GND
32 GND
GND
GND
GND
RFIN1
GND
GND
RFIN2
GND
GND
1
2
3
4
5
6
7
8
9
Stage 1B
Stage 2B
Stage 1A
Stage 2A
30 GND
29 GND
28 RFOUT1
27 GND
26 GND
25 GND
24 GND
23 RFOUT2
22 GND
21 GND
V2BYP 11
GND 12
VCC2 13
GND 14
VCTRL 15
VREF 16
GND 17
GND 18
GND 19
V4ADJ 20
GND 10
Backside Paddle
GND
General Description
The TAT3814 is a variable gain return path amplifier
designed for head-end and system amplifier
infrastructure applications. The TAT3814 provides up
to 37 dB gain with 20dB automatic gain control
capability.
The small size, 6x6 mm and efficient power dissipation,
nominal 2.5 watts, provide an ideal solution for high
density head-end applications and compact system
amplifiers.
Standard supply voltage for the TAT3814 is +8V.
Operation from lower supply voltages is possible.
Contact TriQuint CATV applications for guidance.
The TAT3814 is fabricated using 6-inch GaAs pHEMT
and HBT technologies to optimize performance and
cost.
Pin Configuration
Pin No.
1-3, 5-6, 8-10, 12, 14,
17-19, 21-22, 24-27,
29-30, 32-37, 39
4/7
11
40
13 / 38
15
16
20
23 / 28
31
Backside Paddle
Symbol
GND
RFIN1 / RFIN2
V2BYP
V1BYP
VCC2 / VCC1
VCTRL
VREF
V4ADJ
RFOUT2 / RFOUT1
V3ADJ
GND
Ordering Information
Part No.
TAT3814
TAT3814-PCB
Description
Return path VGA
5-300 MHz Evaluation Board
Standard T/R size = 1000 pieces on a 7” x 12mm reel
Data Sheet: Rev F 11/22/12
© 2012 TriQuint Semiconductor, Inc.
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Disclaimer: Subject to change without notice
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