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TC820 - 3-3/4 Digit A/D Converter

General Description

The TC820 is a 3-3/4 digit, multi-measurement system especially suited for use in portable instruments.

It integrates 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.

Key Features

  • Multiple Analog Measurement System - Digit A/D Converter - Frequency Counter - Logic Probe.
  • Low Noise A/D Converter: - Differential Inputs: (1 pA Bias Current) - On-Chip 50 ppm/°C Voltage Reference.
  • Frequency Counter: - 4 MHz 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Obsolete Device 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: (1 pA Bias Current) - On-Chip 50 ppm/°C Voltage Reference • Frequency Counter: - 4 MHz 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-Lead Plastic DIP, 44-Lead Plastic Flat Pack, or 44-Lead PLCC Packages General Des