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April 2002
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
CA3162
A/D Converters for 3-Digit Display
Description
The CA3162E and CA3162AE are I 2 L monolithic A/D
converters that provide a 3 digit multiplexed BCD output.
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
? Overrange Indication
- “EEE” for Reading Greater than +999mV, “-” for
Reading More Negative than -99mV When Used
With CA3161E
PART NUMBER
CA3162E
TEMP.
RANGE ( o C)
0 to 70
PACKAGE
16 Ld PDIP
PKG.
NO.
E16.3
Pinout
CA3162 (PDIP)
TOP VIEW
BCD
OUTPUTS
2 1
2 0
NSD
1
2
3
16 2 3
15 2 2
14 V+
BCD
OUTPUTS
DIGIT
SELECT
MSD
4
13 GAIN ADJ
OUTPUTS
LSD
5
12
INTEGRATING
CAP
HOLD/
BYPASS
GND
6
7
11 HIGH INPUT
10 LOW INPUT
ZERO ADJ
8
9
ZERO ADJ
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright ? Intersil Americas Inc. 2002. All Rights Reserved
1
FN1080.3
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