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AD7682 - 250kSPS PulSAR ADC

General Description

The AD7682/AD7689 are 4-channel/8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a single power supply, VDD.

Key Features

  • 16-bit resolution with no missing codes.
  • 4-channel (AD7682)/8-channel (AD7689) multiplexer with choice of inputs.
  • Unipolar single-ended.
  • Differential (GND sense).
  • Pseudobipolar.
  • Throughput: 250 kSPS.
  • INL: ±0.4 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR).
  • Dynamic range: 93.8 dB.
  • SINAD: 92.5 dB at 20 kHz.
  • THD:.
  • 100 dB at 20 kHz.
  • Analog input range: 0 V to VREF with VREF up to VDD.
  • Multiple reference types.
  • Internal select.

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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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Data Sheet AD7682/AD7689 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADCs FEATURES ► 16-bit resolution with no missing codes ► 4-channel (AD7682)/8-channel (AD7689) multiplexer with choice of inputs ► Unipolar single-ended ► Differential (GND sense) ► Pseudobipolar ► Throughput: 250 kSPS ► INL: ±0.4 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR) ► Dynamic range: 93.8 dB ► SINAD: 92.5 dB at 20 kHz ► THD: −100 dB at 20 kHz ► Analog input range: 0 V to VREF with VREF up to VDD ► Multiple reference types ► Internal selectable 2.5 V or 4.096 V ► External buffered (up to 4.096 V) ► External (up to VDD) ► Internal temperature sensor (TEMP) ► Channel sequencer, selectable 1-pole filter, busy indicator ► No pipeline delay, SAR architecture ► Single-supply 2.3 V to 5.5 V operation with 1.8 V to 5.