QPB7400
®
CATV 75Ω Adjustable Low Gain (9–11dB) RF Amplifier
Product Overview
The QPB7400 is a low-cost RF amplifier designed for
applications from 47 to 1218ꢀMHz. The balance of low
noise and distortion provides an ideal solution for a wide
range of broadband amplifiers used in cable television
applications such as optical receivers and low noise
front ends.
3-pin SOT-89 Package
The QPB7400 has features allowing a great deal of
design-in flexibility. Gain and return loss are adjustable
with an external feedback resistor. An internal bias
circuit mitigates the effect of temperature and process
variation and an external resistor may be used to adjust
the bias current to optimize distortion or noise
performance.
Key Features
• Gain, return loss, and bias externally adjustable
• 47–1218ꢀMHz bandwidth (DOCSIS 3.1 Compatible)
• CCNꢀ–ꢀ65ꢀdBc, CSO–70ꢀdBc, and CTB–77ꢀdBc for
33ꢀdBmVꢀ/ꢀch at output (-6ꢀdB for QAM), 80 NTSC + 108
QAM, flat loading
The QPB7400 is fabricated using 6-inch GaAs pHEMT
technology to optimize performance and cost. It
provides excellent gain and return loss consistency
inherent to the pHEMT process.
• +5ꢀV Biasing, 105ꢀmA Current Consumption
• On-chip active bias for consistent bias current and
repeatable performance over temperature
• Low Noise: 3.5ꢀdB to 1218ꢀMHz
• +41ꢀdBm typical OIP3
• +60ꢀdBm typical OIP2
Functional Block Diagram
• pHEMT device technology
Applications
• Single-ended and Push-Pull Optical Receivers
• Low-noise Drop Amplifiers
• Distribution Amplifiers
• Multi-Dwelling Units
• Single-ended Gain Block
Top View
Ordering Information
Part No.
Description
QPB7400SQ
QPB7400SR
QPB7400TR13
QPB7400PCK
Sample bag with 25 pieces
7” reel with 100 pieces
13” reel with 2500 pieces
PCBA with 5 piece sample bag
Data Sheet –Rev E, April 6, 2018 | Subject to change without notice
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