TC7136ACPI datasheet(1/22 Pages) MICROCHIP

部件名	TC7136ACPI

功能描述	Low Power 3-1/2 Digit Analog-to-Digital Converter

PDF	22 Pages

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制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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DS21461B-page 1

TC7136/TC7136A

Features

• Fast Over Range Recovery, Ensured First Reading

Accuracy

• Low Temperature Drift Internal Reference

- TC7136: 70ppm/°C (Typ.)

- TC7136A: 35ppm/°C (Typ.)

• Zero Reading with Zero Input

• Low Noise: 15

µVP-P

• High Resolution: 0.05%

• Low Input Leakage Current: 1pA (Typ.)/10pA (Max.)

• Precision Null Detectors with True Polarity at Zero

• High-Impedance Differential Input

• Convenient 9V Battery Operation with Low Power

Dissipation: 500

µW (Typ.)/900µW(Max.)

Applications

• Thermometry

• Bridge Readouts: Strain Gauges, Load Cells,

Null Detectors

• Digital Meters: Voltage/Current/Ohms/Power, pH

• Digital Scales, Process Monitors

• Portable Instrumentation

Device Selection Table

General Description

The TC7136 and TC7136A are low power, 3-1/2 digit

with liquid crystal display (LCD) drivers and analog-to-

digital converters. These devices incorporate an "inte-

grator output zero" phase, which enables over range

recovery.

The

performance

of

existing

TC7126,

TC7126A and ICL7126 based systems may be

upgraded with minor changes to external, passive

components.

The TC7136A has an improved internal zener refer-

ence voltage circuit which maintains the analog com-

mon temperature drift to 35ppm/°C (typical) and

75ppm/°C (maximum). This represents an improve-

ment of two to four times over similar 3-1/2 digit con-

verters.

The

costly,

space

consuming

external

reference source may be removed.

The TC7136 and TC7136A limit linearity error to less

than 1 count on 200mV or 2V full scale ranges. The roll-

over error (the difference in readings for equal magni-

tude, but opposite polarity input signals) is below ±1

count. High-impedance differential inputs offer 1pA

leakage currents and a 1012

Ω input impedance. The

differential reference input allows ratiometric measure-

ments for ohms or bridge transducer measurements.

The 15

µVP-P noise performance ensures a "rock solid"

reading. The auto-zero cycle enables a zero display

readout for a 0V input.

Part Number

Package

Temperature

Range

TC7136 CPI

40-Pin PDIP

0

°Cto +70°C

TC7136 CKW

44-Pin PQFP

0

°Cto +70°C

TC7136 CLW

44-Pin PLCC

0

°Cto +70°C

TC7136A CPI

40-Pin PDIP

0

°Cto +70°C

TC7136A CKW

44-Pin PQFP

0

°Cto +70°C

TC7136A CLW

44-Pin PLCC

0

°Cto +70°C

Low Power 3-1/2 Digit Analog-to-Digital Converter

类似零件编号 - TC7136ACPI

制造商	部件名	数据表	功能描述
TelCom Semiconductor, I...	TC7136ACPL	192Kb / 12P	LOW POWER, 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS

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类似说明 - TC7136ACPI

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