HMC121G8_01 Datasheet, PDF (1/4 Pages) Hittite Microwave Corporation – GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz

v01.0801
HMC121G8
MICROWAVE CORPORATION
GaAs MMIC SMT VOLTAGE-VARIABLE
ATTENUATOR, DC - 8 GHz
Typical Applications
• Base Station Infrastructure
• Portable Wireless CATV & DBS
2
• MMDS & Wireless LAN
• Wireless Local Loop
• Fiber Optics, Military, Space
& Test Equipment
Functional Diagram
Features
Wide Bandwidth: DC - 8 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
Simplified Voltage Control
General Description
The HMC121G8 is an absorptive voltage variable
attenuator provided in a surface-mount hermetic
package. It features an on-chip reference attenua-
tor for use with an external op-amp to provide simple
single voltage attenuation control. The device is
ideal in designs where an analog control signal must
control RF signal levels over a 30 dB amplitude
range, such as in AGC circuits and in temperature
compensation of multiple gain stages.
Electrical Specifications, T_A = +25° C, 50 ohm system
Parameter
Min.
Typ.
Max.
Units
Insertion Loss
DC - 4 GHz:
DC - 8 GHz:
1.5
3.0
dB
2
3.5
dB
Attenuation Range
25
30
dB
Return Loss
DC - 4 GHz: 10
15
dB
DC - 8 GHz:
7
10
dB
Switching Characteristics
tRISE, tFALL (10/90% RF)
3
ns
tON, tOFF (50% CTL to 10/90% RF)
6
ns
Input Power for 0.25 dB Compression
(0.5 - 8 GHz)
Min Atten:
+10
Atten >2 dB:
-2
dBm
dBm
Input Third Order Intercept
(Two-tone Input Power = -8 dBm Each Tone
Min Atten:
+25
Atten >2 dB:
+10
dBm
dBm
2 - 20
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Visit us at www.hittite.com, or Email at [e-mail]