CHM2378A Datasheet, PDF (1/8 Pages) United Monolithic Semiconductors – W-band Dual Channel Mixer

CHM2378a
W-band Dual Channel Mixer
GaAs Monolithic Microwave IC
Description
The CHM2378 is a dual channel mixer.
Each mixer cell is a balanced structure
based on a six quarter wave ring. The non-
linear devices are high quality Schottky
diodes providing low conversion loss and
very low 1/f noise.
This circuit is manufactured with the BES-
MMIC process: 1 µm Schottky diode
device, air bridges, via holes through the
substrate, stepper lithography.
It is available in chip form.
Main Features
n W-band LO and RF frequency range
n Low conversion loss
n IF from DC to 100MHz
n High LO/RF isolation
n High LO/AM noise rejection
n Very low 1/f noise
n Low LO input power
n Automatic assembly oriented
n Chip size: 1.98 x 2.07 x 0.10 mm
Main Characteristics
Tamb. = 25°C
RF1
LO
RF2
IF2
IF1
Dual channel mixer block diagram
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
75
75,5
76
76,5
77
77,5
78
LO frequency (GHz)
Typical conversion characteristic
LO power = 8dBm ; IF=10MHz
(measurement in test fixture)
Symbol
F_lo, F_rf
F_if
Lc
I_lo/rf
N_if
Parameter
LO,RF frequency
IF frequency range
Conversion loss
LO/RF isolation
IF noise @ 100kHz
Min Typ
76
76.5
DC-100
7.5
25
-162
Max
77
9.5
Unit
GHz
MHz
dB
dB
dBm/Hz
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHM23781269 -26-Sep.-01
1/8
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]