AT65-0233
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz
Handling Procedures
Please observe the following precautions to avoid
damage:
Rev. V6
Truth Table (Digital Attenuator)
C1
0
1
0
0
0
1
C2
0
0
1
0
0
1
C3
0
0
0
1
0
1
C4
0
0
0
0
1
1
Attenuation
Loss, Reference
2.0 dB
4.0 dB
8.0 dB
16.0 dB
30.0 dB
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
0 = TTL Low; 1 = TTL High
Typical Performance Curves
Attenuation Accuracy, 2 dB
Typical Insertion Loss (dB)
Deviation from Nom. Atten. (dB)
3
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
0
0.5
1
1.5
2
2.5
3
Loss (dB)
2
1
0
0
0.5
1
1.5
2
2.5
3
Fre que ncy (GHz )
Fre que ncy (GHz )
Attenuation Accuracy, 4 dB
Deviation from Nom. Atten. (dB)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
0
0.5
1
1
.5
2
2.5
3
Attenuation Accuracy, 8 dB
0.4
D ev ia tio n fro m N o m . A tten.
(dB)
0.2
0
-0.2
-0.4
0
0.5
1
1.5
2
2.5
3
Fre que ncy (GHz )
Frequency (GHz)
3
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•
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•
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•
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