VOLTAGEVARIABLE ATTENUATOR. HMC346C8 Datasheet

HMC346C8 ATTENUATOR. Datasheet pdf. Equivalent

Part HMC346C8
Description GaAs MMIC SMT VOLTAGEVARIABLE ATTENUATOR
Feature ATTENUATORS - SMT v02.1008 5 Typical Applications The HMC346C8 is ideal for: • Basestation Infrastr.
Manufacture Analog Devices
Datasheet
Download HMC346C8 Datasheet



HMC346C8
v02.1008
5
Typical Applications
The HMC346C8 is ideal for:
• Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Test Instrumentation
Functional Diagram
HMC346C8
GaAs MMIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
Features
Wide Bandwidth: DC - 8 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
Surface Mount Ceramic Package
General Description
The HMC346C8 is an absorptive Voltage Variable
Attenuator (VVA) in a non-hermetic surface-mount
ceramic package operating from DC - 8 GHz. It fea-
tures 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 con-
trol 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
1.9
2.9
2.1
3.1
Attenuation Range
DC - 8 GHz
30
Return Loss
DC - 8 GHz
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 - 78
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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



HMC346C8
v02.1008
HMC346C8
GaAs MMIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
Insertion Loss vs. Temperature
0
Relative Attenuation, Control Voltage
5
Optimized for 4 GHz Operation
0
-5
-1
-10
-2
-15
+25C
-3
+85C
-20
-40C
-25
-4
-30
-5
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
-35
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Return Loss vs. Attenuation
0
-5
-10
-15
-20
5dB
-25
10dB
15dB
20dB
-30
25dB
30dB
-35
012345678
FREQUENCY (GHz)
9 10
Relative Attenuation, Control Voltage
Optimized for 8 GHz Operation
0
-5
-10
-15
-20
-25
-30
-35
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 4 GHz
0
-0.5
-1
V1 +25C
V2 +25C
V1 +85C
V2 +85C
V1 -40C
V2 -40C
-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
V1 +25C
V2 +25C
V1 +85C
V2 +85C
-1
V1 -40C
V2 -40C
-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 - 79





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