CHM1291_15 Datasheet, PDF (1/6 Pages) United Monolithic Semiconductors – 25-32GHz Single Side Band Mixer

CHM1291
25-32GHz Single Side Band Mixer
GaAs Monolithic Microwave IC
Description
The CHM1291 is a multifunction chip (MFC)
which integrates a LO buffer amplifier and a sub-
harmonically balanced diodes mixer for 2LO
suppression and image rejection. 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 grounded. This
helps simplify the assembly process.
The circuit is manufactured with a pHEMT
process, 0.25µm gate length, via holes through
the substrate, air bridges and electron beam
gate lithography.
It is available in chip form.
Main Features
■ Broadband performance : 25-32GHz
■ 11dB conversion Loss
■ 15dBc image rejection
■ +5dBm LO input power
■ +1dBm input power (1dB gain comp.)
■ Low DC power consumption, 55mA@3.5V
■ Chip size : 2.06 x 1.25 x 0.10mm
Up-Conversion supradyne mode with external combiner
P LO=+5dBm F LO=14GHz
32
28
24
20
16
12
CL sup ( dB )
CL inf ( dB )
8
Img Supp ( dBc )
P LO @ RF ( dBm )
4
0
P 2xLO @ RF ( dBm )
-4
-8
-12
-16
-20
-24
-28
-32
-36
-40
-44
1,5
1,7
1,9
2,1
2,3
2,5
IF Frequency (GHz)
Main Characteristics
Tamb=+25°C
Symbol
Parameter
F_RF
RF frequency range
F_LO
LO frequency range
F_IF
IF frequency range
L_c
Conversion Loss
Min Typ Max
25
32
12
15.5
0.1
3
11
15
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Unit
GHz
GHz
GHz
dB
Ref. : DSCHM12917166 - 15 Jun 07
1/6
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : [phone] - Fax : [phone]