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®
April 2002
CA3162
A/D Converters for 3-Digit Display
Features
• Dual Slope A/D Conversion
• Multiplexed BCD Display
• Ultra Stable Internal Band Gap Voltage Reference
• Capable of Reading 99mV Below Ground with Single
Supply
• Differential Input
• Internal Timing - No External Clock Required
• Choice of Low Speed (4Hz) or High Speed (96Hz)
Conversion Rate
• “Hold” Inhibits Conversion but Maintains Delay
• Overrange Indication
- “EEE” for Reading Greater than +999mV, “-” for
Reading More Negative than -99mV When Used
With CA3161E
Description
The CA3162E and CA3162AE are I
2
L monolithic A/D
convertersthatprovidea3digitmultiplexedBCDoutput.
They are used with the CA3161E BCD-to-Seven-Segment
Decoder/Driver and a minimum of external parts to imple-
ment a complete 3-digit display. The CA3162AE is identical
to the CA3162E except for an extended operating tempera-
ture range.
The CA3161E is described in the Display Drivers section of
this data book.
Ordering Information
Pinout
CA3162 (PDIP)
TOP VIEW
PART NUMBER
TEMP.
RANGE (
o
C) PACKAGE
PKG.
NO.
CA3162E 0 to 70 16 Ld PDIP E16.3
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
2
1
2
0
NSD
MSD
LSD
HOLD/
ZERO ADJ
GND
2
3
V+
GAIN ADJ
INTEGRATING
HIGH INPUT
LOW INPUT
ZERO ADJ
2
2
CAP
BYPASS
BCD
OUTPUTS
DIGIT
SELECT
OUTPUTS
BCD
OUTPUTS
FN1080.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved
