TC820 TelCom Semiconductor, TC820 Datasheet

TC820

Manufacturer Part Number

TC820

Description

3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY COUNTER AND LOGIC PROBE

Manufacturer

TelCom Semiconductor

Datasheet

1.TC820.pdf (22 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

TC820CKW

Manufacturer:

Microchip Technology

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

TC820CKW713

Manufacturer:

Microchip Technology

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

TC820CLW

Manufacturer:

Microchip Technology

Quantity:

10 000

Company:

BOSTOCK HK LIMITED

Part Number:

TC820CLW713

Manufacturer:

Microchip Technology

Quantity:

10 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

TC820CPL

Manufacturer:

TELCOM

Quantity:

20 000

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3-3/4 DIGIT A/D CONVERTER WITH FREQUENCY

COUNTER AND LOGIC PROBE

FEATURES

FUNCTIONAL BLOCK DIAGRAM

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 Overrange Indicator

LCD Display Driver with Built-in Contrast Control

Data Hold Input for Comparison Measurements

Low Battery Detect with LCD Annunciator

Underrange and Overrange Outputs

On-Chip Buzzer Driver with Control Input

44-Pin Plastic Flat Pack or PLCC or 40-Pin Plastic

DIP Packages

TELCOM SEMICONDUCTOR, INC.

UNDERRANGE

OVERRANGE

FULL-SCALE

FREQUENCY

ANALOG

SELECT

PROBE

LOGIC

INPUT

EOC

ANALOG GND

LOW DRIFT VOLTAGE

DIGITAL GROUND

A/D CONVERTER

DIFFERENTIAL

AUTORANGING

REFERENCE

FREQUENCY

3-3/4 DIGIT

COUNTER

PROBE

LOGIC

LOGIC HIGH

LOGIC LOW

TO LCD

AND BUZZER

OSCILLATOR

CLOCK

TC820

OVERRANGE

TRIPLEX LCD

PEAK

HOLD

COMPARATOR

PEAK HOLD

TRIPLE LCD

ORDERING INFORMATION

Part No.

TC820CKW 3-3/4 Digits

TC820CLW

TC820CPL

GENERAL DESCRIPTION

especially suited for use in portable instruments. It inte-

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

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 (battery) and features a built-in

battery low flag. Function and decimal point selection are

accomplished with simple logic inputs designed for direct

connection to an external microcontroller or rotary switch.

integration make the TC820 desirable in a variety of analog

measurement applications.

DRIVERS

BATTERY

DETECT

LOW

PKHOLD

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

Ease of use, low power operation and high functional

ANNUNCIATOR DRIVE

LOW BATT

Resolution

3-3/4 Digits

FUNCTION

DECIMAL

DRIVERS

SELECT

BUZZER

DRIVER

POINT

VOLTS

FREQUENCY

LOGIC

Package

44-Pin Plastic

Quad Flat Package

44-Pin Plastic

Leadless Chip

Carrier

40-Pin Plastic DIP 0 C to +70 C

BUZZER

CONTROL

DECIMAL

POINT

SELECT

FUNCTION

SELECT

Temperature

0 C to +70 C

TC820

TC820-10 10/17/96

Range

3-149

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