VOLTAGE-VARIABLE ATTENUATOR. HMC346MS8GE Datasheet

HMC346MS8GE ATTENUATOR. Datasheet pdf. Equivalent

Part HMC346MS8GE
Description GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR
Feature HMC346MS8G / 346MS8GE v07.1008 GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz 5 Typical Ap.
Manufacture Analog Devices
Datasheet
Download HMC346MS8GE Datasheet



HMC346MS8GE
HMC346MS8G / 346MS8GE
v07.1008
GaAs MMIC SMT VOLTAGE-VARIABLE
ATTENUATOR, DC - 8 GHz
5
Typical Applications
This attenuator is ideal for use as a VVA
for DC - 8 GHz applications:
• Point-to-Point Radio
• VSAT Radio
Features
Wide Bandwidth: DC - 8 GHz
Low Phase Shift vs. Attenuation
32 dB Attenuation Range
Functional Diagram
General Description
The HMC346MS8G & HMC346MS8GE are absorp-
tive Voltage Variable Attenuators (VVA) in 8 lead sur-
face-mount packages 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 con-
trol RF signal levels over a 30 dB amplitude range.
Applications include AGC circuits and temperature
compensation of multiple gain stages in microwave
point-to-point and VSAT radios.
Electrical Specifications, TA = +25° C, 50 ohm system
Parameter
Min
Typical
Max
Insertion Loss
DC - 8 GHz
1.5
2.5
Attenuation Range
DC - 8 GHz
27
32
Return Loss
DC - 8 GHz
5
10
Switching Characteristics
tRISE, tFALL (10/90% RF)
2
tON, tOFF (50% CTL to 10/90% RF)
8
Input Power for 0.25 dB Compression (0.5 - 8 GHz)
Min. Atten.
+8
Atten. >2 dB
-2
Input Third Order Intercept (0.5 - 8 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
Min. Atten.
+25
Atten. >2 dB
+10
Units
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
5 - 102
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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



HMC346MS8GE
v07.1008
Insertion Loss vs. Temperature
0
HMC346MS8G / 346MS8GE
GaAs MMIC SMT VOLTAGE-VARIABLE
ATTENUATOR, DC - 8 GHz
5
Relative Attenuation
0
-1
-10
-2
T+25C
-3
T -40C
T+85C
-4
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
-20
-30
-40
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Return Loss vs. Attenuation
0
-5
-10
-15
-20
-25
MIN
15 dB
MAX
-30
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 4 GHz
0
-0.5
V2 -40C
-1
V2 +25C
V2 +85C
-1.5
-2
-2.5
-3
0
V1 +85C V1 +25C V1 -40C
5
10
15
20
25
30
RELATIVE ATTENUATION (dB)
Relative Phase
140
max
25 dB 30 dB
120
100
20 dB
15 dB
80
10 dB
5 dB
60
40
20
0
012345678
FREQUENCY (GHz)
9 10
Relative Attenuation vs.
Control Voltage @ 8 GHz
0
-0.5
V2 -40C
-1
V2 +25C
V2 +85C
-1.5
-2
-2.5
-3
0
V1 +85C V1 +25C V1 -40C
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 - 103





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