CHR3894-98F Datasheet, PDF (2/12 Pages) United Monolithic Semiconductors – 37-40GHz Integrated Down Converter

CHR3894-98F
37-40GHz Integrated Down Converter
Main Characteristics
Tamb.= +25°C, VD = VD1 = +4V ⁽¹⁾
Symbol
Parameter
Min Typ Max Unit
F_RF
RF frequency range
F_OL
LO frequency range
37
40 GHz
17.5
21.0 GHz
F_IF
IF frequency range
G
Conversion gain without attenuation ⁽²⁾
DC
3.5 GHz
13
dB
G
Gain Control range
8
dB
NF
Noise Figure without attenuation, for
IF>0.1GHz
4.5
dB
Im_rej Image rejection ⁽²⁾
16
dBc
P_Lo
LO input power
0
dBm
IIP3
Input IP3 without attenuation
2
dBm
IIP3
Input IP3 @ all attenuation
0
dBm
LO RL Input LO Return Loss
-12
dB
RF RL Input RF Return Loss
-8
dB
LO/RF iso Isolation LO on RF @ LO
-40
dBm
2LO/RF iso Isolation LO on RF @ 2LO
-30
dBm
VGL
LNA DC gate voltage
-0.15
V
GC
Gain Control DC voltage
-2
0.6
V
VGX
Multiplier DC gate voltage
-0.9
V
IDt
Total drain current (ID+ID1) ⁽³⁾
250
mA
These values are representative of on-wafer measurements that are made without bonding
wires at the RF ports.
A bonding wire of typically 0.1 to 0.25nH will improve the matching at the accesses.
(1) _{VD: LO-chain drain bias voltage.}
VD1: LNA drain bias voltage.
(2) _{An external combiner 90° is required on I / Q.}
(3) _{ID: LO-chain drain current around 125mA.}
ID1: LNA drain current around 125mA, could be tuned with VGL.
Note: IDt is not affected by GC.
Electrostatic discharge sensitive device observe handling precautions!
Ref. : DSCHR38941192 - 11 Jul 11
2/12
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Specifications subject to change without notice