CHM1290
20-30GHz SUB-HARMONICALLY PUMPED MIXER
GaAs Monolithic Microwave IC
Description
The CHM1290 is a MFC which integrates a self
biased LO buffer amplifier and a sub-
harmonically diodes mixer for 2LO suppression
It is usable both for up-conversion and down-
conversion. It is designed for a wide range of
applications,
typically
commercial
communication systems for broadband local
access (LMDS). The backside of the chip is both
RF and DC grounds. This helps simplify the
assembly process.
The circuit is manufactured with a PM-HEMT
process, 0.25µm gate length, capacities over via
holes, via holes through the substrate, air
bridges and electron beam gate lithography.
It is available in chip form.
Main Features
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Broadband performance : 20-30GHz
10dB conversion Loss
29dB 2LO to RF isolation
-4dBm LO input power
-3dBm input power 1 dB compression
Low DC power consumption, 33mA@4.0V
Chip size : 0.86 X 1.28 X 0.10 mm
Main Characteristics
Tamb. = 25°C
Parameter
Min
Typ
Max
Unit
F
RF
F
LO
F
IF
L
c
RF frequency range
LO frequency range
IF frequency range
Conversion Loss
20
10
DC
10
30
15
6
12
GHz
GHz
GHz
dB
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHM12902045 - 14-Feb.-02
1/6
Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
UMS [ UNITED MONOLITHIC SEMICONDUCTORS ]
