VOLTAGEVARIABLE ATTENUATOR. HMC346G8 Datasheet

HMC346G8 ATTENUATOR. Datasheet pdf. Equivalent

Part HMC346G8
Description GaAs MMIC HERMETIC SMT VOLTAGEVARIABLE ATTENUATOR
Feature v03.1008 HMC346G8 GaAs MMIC HERMETIC SMT VOLTAGEVARIABLE ATTENUATOR, DC - 8 GHz 5 Typical Applicat.
Manufacture Analog Devices
Datasheet
Download HMC346G8 Datasheet



HMC346G8
v03.1008
HMC346G8
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
5
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 Specifications, TA = +25° C, 50 ohm system
Parameter
Min
Typical
Max
Insertion Loss
DC - 6 GHz
DC - 8 GHz
2.0
3.0
2.0
3.5
Attenuation Range
DC - 8 GHz
30
Return Loss
DC - 8 GHz
7
10
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
2
8
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)
Min. Atten.
+8
-2
Atten. >2 dB
Min. Atten.
+25
Atten. >2 dB
+10
Units
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
5 - 84
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Order On-line Trademarks and registered trademarks are the property of their respective owners. at www.hAiptptilticea.tcioonmSupport: Phone: 1-800-ANALOG-D



HMC346G8
v03.1008
HMC346G8
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
Insertion Loss vs. Temperature
0
Relative Attenuation, Control Voltage
5
Optimized for 4 GHz Operation
0
-1
-2
-3
-4
+ 25C
- 40C
+ 85C
-5
0
1
2
3
4
5
6
7
8
FREQUENCY
-10
-20
-30
-40
0
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
Return Loss vs. Attenuation
0
-5
-10
-15
-20
5 dB
20 dB
10 dB
25 dB
15 dB
30 dB
-25
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Relative Attenuation, Control Voltage
Optimized for 8 GHz Operation
0
-10
-20
-30
-40
0
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 4 GHz
0
-0.5
V1 + 25C
V2 + 25C
V1 - 40C
V2 - 40C
-1
V1 + 85C
V2 + 85C
-1.5
-2
-2.5
-3
0
5
10
15
20
25
30
RELATIVE ATTENUATION (dB)
Relative Attenuation vs.
Control Voltage @ 8 GHz
0
-0.5
-1
V1 + 25C
V2 + 25C
V1 - 40C
V2 - 40C
V1 + 85C
V2 + 85C
-1.5
-2
-2.5
-3
0
5
10
15
20
25
30
RELATIVE ATTENUATION (dB)
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Order On-line Trademarks and registered trademarks are the property of their respective owners. at www.hAiptptilticea.tcioonmSupport: Phone: 1-800-ANALOG-D
5 - 85





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