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HI-7159A - Microprocessor-Compatible/ 5-1/2 Digit A/D Converter

Description

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 SYMBOL VCC INT OUT INT IN BUF OUT CREF - Guard CREF CREF + CREF + Guard VREF HI VREF LO AGND VIN HI VIN LO VEE RD/RXD WR/TXD CS/SAD4 P0/SMS0 P1/SMS1 DESCRIPTION Positive 5V Power Supply for analog and digital sections.

Features

  • ±200,000 Count A/D Converter.
  • 2V Full Scale Reading With 10µV Resolution.
  • 15 Conversions Per Second in 51/2 Digit Mode.
  • 60 Conversions Per Second in 41/2 Digit Mode.
  • Serial or Parallel Interface Modes.
  • Four Selectable Baud Rates.
  • Differential Analog Input.
  • Differential Reference Input.
  • Digital Autozero.

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Full PDF Text Transcription

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HI-7159A Data Sheet January 1999 File Number 2936.4 Microprocessor-Compatible, 5- 1/2 Digit A/D Converter The Intersil HI-7159A is a monolithic A/D converter that uses a unique dual slope technique which allows it to resolve input changes as small as 1 part in 200,000 (10µV) without the use of critical external components. Its digital autozeroing feature virtually eliminates zero drift over temperature. The device is fabricated in Intersil’ proprietary low noise BiMOS process, resulting in exceptional linearity and noise performance. The HI-7159A’s resolution can be switched between a high resolution 200,000 count (51/2 digit) mode, and a high speed 20,000 count (41/2 digit) mode without any hardware modifications.
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