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CA3162

Intersil
Part Number CA3162
Manufacturer Intersil
Description A/D Converters for 3-Digit Display
Published Jun 12, 2005
Detailed Description CA3162, CA3162A August 1997 A/D Converters for 3-Digit Display Description The CA3162E and CA3162AE are I2L monolithic ...
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CA3162
CA3162

Overview
CA3162, CA3162A August 1997 A/D Converters for 3-Digit Display Description The CA3162E and CA3162AE are I2L 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 implement a complete 3-digit display.
The CA3162AE is identical to the CA3162E except for an extended operating temperature range.
The CA3161E is described in the Display Drivers section of this data book.
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 • Extended Temperature Range Version Available Ordering Information PART NUMBER CA3162E CA3162AE TEMP.
RANGE (oC) 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 21 20 NSD 1 2 3 4 5 6 7 8 16 23 15 22 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 © Intersil Corporation 1999 File Number 1080.
2 3-5 CA3162, CA3162A Functional Block Diagram V+ ZERO ADJ 8 9 V+ BCD OUTPUTS INTEGRATING CAP 12 21 1 20 2 22 15 23 16 V+ 14 3 CONTROL LOGIC COUNTERS AND MULTIPLEX DIGIT DRIVE 4 5 4 THRESHOLD DET.
5 = MSD = LSD = NSD DIGIT SELECT OUTPUTS † HIGH INPUT 11 LOW INPUT 10 V/I CONVERTER ÷2048 ÷96 3 REFERENCE CURRENT GENERATOR BAND GAP REFERENCE OSC HOLD/ BYPASS GATES 6 CONVERSION CONTROL 13 7 GND † ...


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