Datasheet

5
FN957.10
July 11, 2005
Block Diagram
Schematic Diagram
A ≈ 10
A
≈
10,000
C
1
12pF
5
A ≈ 1
1 8
4
6
7
2
3
OFFSET
STROBE
NULL
OUTPUT
INPUT
+
-
200µA200µA1.6mA 2µA2mA
2mA 4mA
V+
V-
BIAS CIRCUIT
CURRENT SOURCES
AND REGULATOR
R
5
500Ω
R
4
500Ω
Q
11
Q
12
R
2
500Ω
R
3
500Ω
Q
10
Q
9
D
5
D
4
D
3
5 1 8
STROBEOFFSET NULL
3
2
NON-INVERTING
INPUT
INVERTING
INPUT
+
-
C
1
12pF
Q
13
Q
15
Q
16
Q
21
Q
20
D
8
Q
19
Q
18
Q
17
R
11
20Ω
R
9
50Ω
R
8
1K
R
12
12K
R
14
20K
R
13
5K
D
7
R
10
1K
OUTPUT
D
6
4
V-
V+
6
7
DYNAMIC CURRENT SINKOUTPUT STAGESECOND STAGEINPUT STAGEBIAS CIRCUIT
D
2
Q
8
Q
4
Q
3
Q
5
Q
2
Q
6
Q
7
D
1
Q
1
R
1
8K
Q
14
R
7
30Ω
R
6
50Ω
NOTE: All resistance values are in ohms.
CA3140, CA3140A