VCA2613Y BURR-BROWN [Burr-Brown Corporation], VCA2613Y Datasheet - Page 11

• Manufacturer Part Number: VCA2613Y
• Description: Dual, VARIABLE GAIN AMPLIFIER with Low-Noise Preamp
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

VCA2613
FIGURE 12. Piecewise Approximation to Logarithmic Control Characteristics.
V
SBOS179D
–4.5dB
–4.5dB
CM
V
CM
0dB
0dB
Attenuator
-V
Control
0
0.3V
T
Input
Input
A1
V1
R
S
V1
C
1
Q
V2
1
A2
V2
C
2
Q
V3
2
A3
V3
C
3
Q
V4
3
A4
OVERALL CONTROL CHARACTERISTICS OF ATTENUATOR
V4
C
Characteristic of Attenuator Control Stage Output
4
V5
Q
Attenuation Characteristic of Individual FETs
4
A5
C1 - C10 Clipping Amplifiers
A1 - A10 Attenuator Stages
V5
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C
V6
5
Q
5
Control Signal
Q
S
A6
V7
V6
C
6
Q
6
A7
V8
V7
C
7
Q
7
A8
V9
V8
C
8
Q
8
V10
A9
V9
C
9
Q
A10
9
3V
Attenuator
V10
Output
C
10
Q
10
11