HMC346G8
v03.1008
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
5
ATTENUATORS - SMT
Typical Applications
The HMC346G8 is ideal for:
• Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Test Instrumentation
Features
Wide Bandwidth: DC - 8 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
8 Lead Hermetic SMT Package
Functional Diagram
General Description
The HMC346G8 is an absorptive Voltage Variable
Attenuator (VVA) in an 8 lead glass / metal (her-
metic) surface-mount package operating from DC -
8 GHz. It features an on-chip reference attenuator
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 30 dB amplitude range. Applications include
AGC circuits and temperature compensation of
multiple gain stages in microwave radios and test
instrumentation.
Electrical Specifi cations,
T
A
= +25° C, 50 ohm system
Parameter
Insertion Loss
Attenuation Range
Return Loss
Switching Characteristics
DC - 6 GHz
DC - 8 GHz
DC - 8 GHz
DC - 8 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
Min. Atten.
Atten. >2 dB
Min. Atten.
Atten. >2 dB
7
Min
Typical
2.0
2.0
30
10
2
8
+8
-2
+25
+10
Max
3.0
3.5
Units
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
Input Power for 0.25 dB Compression (0.5 - 8 GHz)
Input Third Order Intercept (0.5 - 8 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
5 - 84
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HITTITE [ HITTITE MICROWAVE CORPORATION ]
