MC1494 데이터 시트보기 (PDF) - ON Semiconductor
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MC1494 Datasheet PDF : 16 Pages
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MC1494
15
+V
+ VR 2 +Ă4.3 V
3
-VR 4 -Ă4.3 V
5
-V
+V
15
+ VR 2
3
+Ă4.3 V
Current and Voltage
Regulator
1
VY
9
6
R1
I1 Constant
Current
Source
Control
+Ă9.4 V
8.7 k
I1
+Ă8.7 V
8.7 k
R1
I1
7.2 k
Block Diagram
IA
+
Four Quadrant
Multiplier
+
IB
-
-
7
8
RY
11
12
RX
Simplified Circuit
Schematic
2.4 V
4 -Ă4.3 V
7.2 k
-VR
5
-V
+V
15
-Ă9.4 V
3 I1
I1
500 500 5.4 k 500
9
VY
6
I1
7
8
RY I1
11
12
I1
RX I1
Complete Circuit
Schematic
10
13
VX
IA
IB
10
13VX
Differential
Current
Converter
14
IO
(IO = IA - IB)
2 I1
1.7 V 2 I1
14
IO
500
500
500
500
500
500
2
+ VR
1
R1
GND
3
4
+VR
5
-V
3.0 k
8.7 k
7.2 k
8.7 k
2.0 k
10 pF
2.0 k
10 pF
14
IO
7.2 k
9
10
7.2 k
VY
6
+ VX
500
500
13
7 10 k
RY
8
10 k
10 k
10 k 12
RX
11
500 500 500
500 500
Regulator
500
500
500
500
Multiplier
Differential
Current Converter
This device contains 44 active transistors.
Figure 17. Internal Schematic
(Recommended External Circuitry is Depicted within Dotted Lines)
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6
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