AD600 Analog Devices, Inc., AD600 Datasheet - Page 14

• Manufacturer Part Number: AD600
• Description: Dual, Low Noise, Wideband Variable Gain Amplifiers
• Manufacturer: Analog Devices, Inc.

AD600/AD602
Figure 27. Plot of Separate and Overall Gains in Sequential Control
Figure 28. Gain Error for Cascaded Stages—Sequential Control
–10
–1
–2
–3
–4
–5
–6
–7
–8
90
80
70
60
50
40
30
20
10
–1
–2
–3
–4
–5
–6
Figure 29. Gain Error for Cascaded Stages—Parallel Control
–0.5
5
4
3
2
1
0
–0.5
0
5
4
3
2
1
0
–0.1
0
0
0
A1
0.5
0.5
0.2
1.0
1.0
0.4
COMBINED
V
V
V
C
C
C
1.5
1.5
0.6
2.0
0.8
2.0
2.5
A2
2.5
1.0
3.0
3.0
1.2
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–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
Figure 31. Gain Error for Cascaded Stages—Low Ripple Mode
75
70
65
60
55
50
45
40
35
30
80
75
70
65
60
55
50
45
40
35
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
0
Figure 32. SNR vs. Control Voltage—Low Ripple Mode
Figure 30. SNR for Cascaded Stages—Parallel Control
0
0.1
0.2
0.2
0.2
0.3
0.4
0.4
0.4
0.5
0.6
0.6
0.6
V
V
V
C
C
C
0.7
0.8
0.8
0.8
0.9
1.0
1.0
1.0
1.1
1.2
1.2
1.2
1.4
1.4
1.3