CA3162E データシートの表示（PDF） - Harris Semiconductor

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CA3162E

A/D Converter for 3-Digit Display

Harris Semiconductor 

Functional Block Diagram

CA3162, CA3162A

V+

ZERO

ADJ

8

9

HIGH INPUT 11

LOW INPUT 10

V/I

CONVERTER

V+

BCD OUTPUTS

INTEGRATING

CAP

21 20 22 23

V+

12

1 2 15 16

14

CONTROL LOGIC

COUNTERS & MULTIPLEX

DIGIT

DRIVE

THRESHOLD

DET.

÷2048

÷96

3

4

DIGIT SELECT

OUTPUTS †

5

4 = MSD

5 = LSD

3 = NSD

REFERENCE

CURRENT

GENERATOR

† MSD = MOST SIGNIFICANT DIGIT

NSD = NEXT SIGNIFICANT DIGIT

LSD = LEAST SIGNIFICANT DIGIT

BAND GAP

REFERENCE

13

OSC

HOLD/

BYPASS

GATES

6 CONVERSION

CONTROL

7 GND

GAIN

ADJ

2-6

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