HMC121 Datasheet, PDF (1/4 Pages) Hittite Microwave Corporation – GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR DC - 15 GHz

MICROWAVE CORPORATION
HMC121
GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR DC - 15 GHz
SEPTEMBER 1999
Features
General Description
WIDE BANDWIDTH: DC - 15 GHZ
LOW PHASE SHIFT VS. ATTENUATION
2 _{30 dB ATTENUATION RANGE}
SIMPLIFIED VOLTAGE CONTROL
The HMC121 chip is an absorptive voltage
variable attenuator. It features an on-chip
reference attenuator for use with an external
op-amp to provide simple single voltage
attenuation control. The device is ideal in
designs where analog control signal must
control RF signal levels over a 30 dB range,
such as AGC circuits and in temperature
compensation of multiple gain stages. Ap-
plications include military ECM and com-
munications as well as commercial micro-
wave radios and VSAT. See SMT pack-
aged version HMC121G8 (hermetic).
Guaranteed Performance, 50 ohm system, -55 to +85 deg C
Parameter
Insertion Loss
DC - 8 GHz:
DC - 15 GHz:
Attenuation Range
Return Loss
DC - 8 GHz:
DC - 15 GHz:
Switching Characteristics
tRISE, tFALL ( 10/90% RF):
tON, tOFF (50% CTL to 10/90% RF):
Input Power for 0.25dB Comp. ( 0.5 - 15 GHz)
Min. Atten:
Atten. > 2dB:
Input Third Order Intercept
Min. Atten:
(two - 8 dBm signals 0.5 - 15 GHz)
Atten. > 2dB:
Min.
25
13
10
Typ.
1.8
2
30
18
15
3
6
+10
-2
+25
+10
Max.
2.8
3.5
Units
dB
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
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2-6
Fax: [phone]
Web Site: www.hittite.com