CA3162, CA3162A
August 1997
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.
Features
鈥?Dual Slope A/D Conversion
鈥?Multiplexed BCD Display
鈥?Ultra Stable Internal Band Gap Voltage Reference
鈥?Capable of Reading 99mV Below Ground with Single
Supply
鈥?Differential Input
鈥?Internal Timing - No External Clock Required
鈥?Choice of Low Speed (4Hz) or High Speed (96Hz)
Conversion Rate
鈥?鈥淗old鈥?Inhibits Conversion but Maintains Delay
鈥?Overrange Indication
- 鈥淓EE鈥?for Reading Greater than +999mV, 鈥?鈥?for
Reading More Negative than -99mV When Used With
CA3161E
鈥?Extended Temperature Range Version Available
Ordering Information
PART NUMBER
CA3162E
CA3162AE
TEMP.
RANGE (
o
C)
0 to 70
-40 to 85
PACKAGE
16 Ld PDIP
16 Ld PDIP
PKG.
NO.
E16.3
E16.3
Pinout
CA3162
(PDIP)
TOP VIEW
BCD
OUTPUTS
2
1
2
0
NSD
1
2
3
4
5
6
7
8
16 2
3
15 2
2
14 V+
BCD
OUTPUTS
DIGIT
SELECT
OUTPUTS
MSD
LSD
13 GAIN ADJ
12
INTEGRATING
CAP
HOLD/
BYPASS
GND
ZERO ADJ
11 HIGH INPUT
10 LOW INPUT
9
ZERO ADJ
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright 漏 Intersil Corporation 1999
File Number
1080.2
3-5