VOLTAGE-VARIABLE ATTENUATOR. HMC346 Datasheet

HMC346 ATTENUATOR. Datasheet pdf. Equivalent

Part HMC346
Description GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR
Feature ATTENUATORS - ANALOG - CHIP v04.1008 1 Typical Applications This attenuator is ideal for use as .
Manufacture Analog Devices
Datasheet
Download HMC346 Datasheet



HMC346
v04.1008
1
Typical Applications
This attenuator is ideal for use as a VVA
for DC - 20 GHz applications:
• Point-to-Point Radio
• VSAT Radio
HMC346
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 20 GHz
Features
Wide Bandwidth: DC - 20 GHz
Low Phase Shift vs. Attenuation
32 dB Attenuation Range
Die Size: 0.85 x 0.85 x 0.1 mm
Functional Diagram
General Description
The HMC346 die is an absorptive Voltage Variable
Attenuator (VVA) operating from DC - 20 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. For plastic packaged version, see the
HMC346MS8G which operates from DC - 8 GHz.
Electrical Specifications, TA = +25° C, 50 ohm system
Parameter
Min.
Typ.
Max.
Units
Insertion Loss
DC - 12 GHz:
DC - 20 GHz:
1.7
2.3
dB
2.2
2.8
dB
Attenuation Range
DC - 12 GHz:
27
32
dB
DC - 20 GHz:
22
25
dB
Return Loss
Switching Characteristics
Input Power for 0.25 dB Compression (0.5 - 20
GHz)
Input Third Order Intercept (0.5 - 20 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
DC - 12 GHz:
6
10
12 - 20 GHz:
10
15
tRISE, tFALL (10/90% RF):
2
tON, tOFF (50% CTL to 10/90% RF):
8
Min. Atten:
+8
Atten. >2 dB:
+4
Min. Atten:
+25
Atten. >2 dB:
+10
dB
dB
ns
ns
dBm
dBm
dBm
dBm
1-2
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HMC346
v04.1008
Insertion Loss vs. Temperature
0
-0.5
-1
-1.5
-2
-2.5
+25 C
-55 C
-3
+85 C
-3.5
-4
0
5
10
15
20
25
FREQUENCY (GHz)
Return Loss vs. Attenuation
0
-5
MIN
5 dB
MAX
-10
-15
-20
-25
-30
-35
0
5
10
15
20
25
FREQUENCY (GHz)
Relative Phase
240
5 dB
200
10 dB
15 dB
20 dB
160
25 dB
30 dB
MAX
120
80
40
0
0
5
10
15
20
25
FREQUENCY (GHz)
HMC346
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 20 GHz
Relative Attenuation
1
0
-5
-10
-15
-20
-25
-30
-35
-40
0
5
10
15
20
25
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 10 GHz
0
-0.5
V1 +25 C
V1 -55 C
V1 +85 C
V2 +25 C
-1
V2 -55 C
V2 +85 C
-1.5
-2
-2.5
-3
0
5
10
15
20
25
30
RELATIVE ATTENUATION (dB)
Relative Attenuation vs.
Control Voltage @ 20 GHz
0
-0.5
V1 +25 C
V1 -55 C
V1 +85 C
V2 +25 C
-1
V2 -55 C
V2 +85 C
-1.5
-2
-2.5
-3
0
5
10
15
20
25
RELATIVE ATTENUATION (dB)
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1-3





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