HomedatasheetCA3162E

CA3162E Datasheet

Display Output ADC
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Description

Features, Applications

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

PART NUMBER CA3162E TEMP. RANGE ( oC) to 70 PACKAGE 16 Ld PDIP PKG. NO. E16.3

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright � Intersil Americas Inc. 2002. All Rights Reserved

3 CONTROL LOGIC COUNTERS AND MULTIPLEX DIGIT DRIVE 5 4 THRESHOLD DET. 5 = MSD = LSD = NSD DIGIT SELECT OUTPUTS

MSD = MOST SIGNIFICANT DIGIT NSD = NEXT SIGNIFICANT DIGIT LSD = LEAST SIGNIFICANT DIGIT
DC Supply Voltage (Between Pins 7 and 14). +7V Input Voltage (Pin 11 to Ground). �15V

PDIP Package. 90 Maximum Junction Temperature. 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE: JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details..

= 5V, Zero Pot Centered, Gain Pot 2.4k , Unless Otherwise Specified TEST CONDITIONS MIN V+ on Pins 4, 5 Pins 10 and = 0V, Read Decoded Output = 900mV, Read Decoded Output Notes 1 and TYP 100 -80 MAX UNITS nA mV Count

Operating Supply Voltage Range, V+ Supply Current, I+ Input Impedance, ZI Input Bias Current, IIB Unadjusted Zero Offset Unadjusted Gain Linearity Conversion Rate Slow Mode Fast Mode Conversion Control Voltage (Hold Mode) at Pin 6 Common Mode Input Voltage Range, VICR BCD Sink Current at Pins Digit Select Sink Current at Pins 4, 5 Zero Temperature Coefficient Gain Temperature Coefficient NOTES: Notes 3, 4 VBCD 0.5V, at Logic Zero State VDIGIT Select 4V at Logic Zero State = 0V, Zero Pot Centered = 900mV, Gain Pot = 2.4k Pin 6 = Open or GND Pin = 5V

1. Apply 0V across to V10. Adjust zero potentiometer to give 000mV reading. Apply 900mV to input and adjust gain potentiometer to give 900mV reading. 2. Linearity is measured as a difference from a straight line drawn through zero and positive full scale. Limits do not include �0.5 count bit digitizing error. 3. For applications where low input pin 10 is not operated at pin 7 potential, a return path of not more than 100k resistance must be provided for input bias currents. 4. The common mode input voltage above ground cannot exceed +0.2V if the full input signal range 999mV is required at pin 11. That is, pin 11 may not operate higher than 1.2V positive with respect to ground or 0.2V negative with respect to ground. If the maximum input signal is less than 999mV, the common mode input voltage may be raised accordingly.


Features

Parameters

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Manufacturer information

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