Preliminary
EDS-100935 Rev B
Product Description
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or omissions. Sirenza Microdevices assumes no responsibility for the use of
this information, and all such information shall be entirely at the users own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are
implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2001 Sirenza Microdevices, Inc..
All worldwide rights reserved.
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Frequency MHz
SGA-1263
DC-4000 MHz Silicon Germanium
HBT Cascadeable Gain Block
Product Features
DC-4000 MHz Operation
Single Supply Voltage
Excellent Isolation, >50 dB at 900 MHz
50 Ohms In/Out, Broadband Match for Operation
from DC-4 GHz
Unconditionally Stable
Applications
Buffer Amplifier for Oscillator Applications
Broadband Gain Blocks
IF Amp
Isolation vs. Frequency
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Sirenza Microdevices SGA-1263 is a Silicon Germanium HBT
Heterostructure Bipolar Transistor (SiGe HBT) amplifier that
offers excellent isolation and flat gain response for applica-
tions to 4 GHz.
This RFIC is a 2-stage design that provides high isolation of
up to 40dB at 2 GHz and is fabricated using the latest SiGe
HBT 50 GHz FT process, featuring 1 micron emitters with
Vceo > 7V.
These unconditionally stable amplifiers have less than 1dB
gain drift over 125ºC operating range (-40C to +85C) and
are ideal for use as buffer amplifiers in oscillator applica-
tions covering cellular, ISM and narrowband PCS bands.