TC7126RIPL

更新时间： 2024-11-22 22:23:59

品牌	Logo	应用领域
美国微芯 - MICROCHIP		转换器
页数	文件大小	规格书
22页	553K
描述
3-1/2 Digit Analog-to-Digital Converters

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中文翻译

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数据手册

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TC7126RIPL 数据手册

TC7126/A

3-1/2 Digit Analog-to-Digital Converters

Features

General Description

• Internal Reference with Low Temperature Drift

- TC7126: 80ppm/°C Typical

The TC7126A is a 3-1/2 digit CMOS analog-to-digital

converter (ADC) containing all the active components

necessary to construct a 0.05% resolution measure-

ment system. Seven-segment decoders, digit and

polarity drivers, voltage reference, and clock circuit are

integrated on-chip. The TC7126A directly drives a liq-

uid crystal display (LCD), and includes a backplane

driver.

- TC7126A: 35ppm/°C Typical

• Zero Reading with Zero Input

• Low Noise: 15µV

P-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

A low cost, high resolution indicating meter requires

only a display, four resistors, and four capacitors. The

TC7126A's extremely low power drain and 9V battery

operation make it ideal for portable applications.

• Convenient 9V Battery Operation with Low Power

Dissipation: 500µW Typ., 900µW Max.

The TC7126A reduces linearity error to less than 1

count. Rollover error (the difference in readings for

equal magnitude, but opposite polarity input signals) is

below ±1 count. High-impedance differential inputs

Applications

• Thermometry

• Bridge Readouts: Strain Gauges, Load Cells,

Null Detectors

offer 1pA leakage current and a 10 Ω input imped-

ance. The 15µV

noise performance ensures a "rock

P-P

• Digital Meters and Panel Meters:

- Voltage/Current/Ohms/Power, pH

• Digital Scales, Process Monitors

solid" reading, and the auto-zero cycle ensures a zero

display reading with a 0V input.

The TC7126A features a precision, low drift internal

voltage reference and is functionally identical to the

TC7126. A low drift external reference is not normally

required with the TC7126A.

Device Selection Table

Package

Code

Temperature

Range

Package

CPL

IPL

40-Pin PDIP

0°C to +70°C

40-Pin PDIP (TC7126 Only) -25°C to +85°C

CKW

CLW

44-Pin PQFP

44-Pin PLCC

0°C to +70°C

2002 Microchip Technology Inc.

DS21458B-page 1

12 3 4 5 6 7...22

中文翻译

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