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HMC121C8 Datasheet

  • HMC121C8

  • GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR DC - 10 GHz

  • 6頁(yè)

  • HITTITE

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MICROWAVE CORPORATION
HMC121C8
V
03.0400
GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR DC - 10 GHz
F
EBRUARY
2001
Features
WIDE BANDWIDTH: DC - 10 GHz
LOW PHASE SHIFT VS. ATTENUATION
General Description
The HMC121C8 is an absorptive Voltage
Variable Attenuator (VVA) in a non-hermetic
surface-mount package covering DC - 10
GHz. It features an on-chip reference at-
tenuator for use with an external op-amp to
provide simple single voltage attenuation
control, 0 to -3V. The device is ideal in
designs where an analog DC control signal
must control RF signal levels over a 25 dB
amplitude range. Applications include AGC
circuits and temperature compensation of
multiple gain stages in microwave point-to-
point and VSAT radios. See HMC121G8
for a hermetic SMT version of this device.
2
SMT A
TTENUATORS
25 dB ATTENUATION RANGE
SIMPLIFIED VOLTAGE CONTROL
Guaranteed Performance,
50 ohm system, -55 to +85 deg C
Parameter
Inse rtion L oss
DC - 6 GHz :
DC - 8 GHz :
DC - 10 GHz :
DC - 6 GHz:
DC - 10 GHz :
DC - 8 GHz:
DC - 10 GHz :
tRISE, tFALL (10/90% RF):
tON, tOFF (50% CTL to 10/90% RF):
Input Power for 0.25 dB C ompre ssion
(0.5 - 10 GHz)
Input Third Order Intercept (two - 8 dBm
signals, 0.5 - 10 GHz)
Min. Atten:
Atten. >2 dB:
Min. Atten:
20
25
11
8
Min
Typical
2.0
2.2
3.5
25
30
15
12
3
6
+3
-3
+18
+10
Max
2.5
3.2
4.5
Units
dB
dB
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
Attenuation Range
Return Loss
Switching Characteristics
12 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
2 - 14

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