TC820CKW データシートの表示（PDF） - Microchip Technology

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TC820CKW

3-3/4 digit A/D converter with frequency counter and logic probe

Microchip Technology 

TC820

3-3/4 Digit A/D Converter with Frequency Counter

and Logic Probe

Features

• Multiple Analog Measurement System

- Digit A/D Converter

- Frequency Counter

- Logic Probe

• Low Noise A/D Converter:

- Differential Inputs: (1pA Bias Current)

- On-Chip 50ppm/°C Voltage Reference

• Frequency Counter:

- 4MHz Maximum Input Frequency

- Auto-Ranging Over Four Decade Range

• Logic Probe:

- Two LCD Annunciators

- Buzzer Driver

• 3-3/4 Digit Display with Over Range Indicator

• LCD Display Driver with Built-in Contrast Control

• Data Hold Input for Comparison Measurements

• Low Battery Detect with LCD Annunciator

• Under Range and Over Range Outputs

• On-Chip Buzzer Driver with Control Input

• 40-Pin Plastic DIP, 44-Pin Plastic Flat Pack, or

44-Pin PLCC Packages

Device Selection Table

Part

Number

Resolution

Package

Operating

Temp. Range

TC820CPL 3-3/4 Digits 40-Pin PDIP 0°C to +70°C

TC820CKW 3-3/4 Digits 44-Pin PQFP 0°C to +70°C

TC820CLW 3-3/4 Digits 44-Pin PLCC 0°C to +70°C

General Description

The TC820 is a 3-3/4 digit, multi-measurement system

especially suited for use in portable instruments. It inte-

grates a dual slope A/D converter, auto-ranging fre-

quency counter and logic probe into a single 44-pin

surface mount, or 40-pin through hole package. The

TC820 operates from a single 9V input voltage (bat-

tery) and features a built-in battery low flag. Function

and decimal point selection are accomplished with sim-

ple logic inputs designed for direct connection to an

external microcontroller or rotary switch.

© 2002 Microchip Technology Inc.

DS21476B-page 1

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