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AD7687 - Differential ADC

Description

The AD76871 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V to 5.5 V.

Features

  • 16-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR) Dynamic range: 96.5 dB SNR: 95.5 dB at 20 kHz THD:.
  • 118 dB at 20 kHz True differential analog input range ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Single-supply 2.3 V to 5.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface Proprietary serial interface: SPI/QSPI™/.

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Full PDF Text Transcription

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02972-002 Data Sheet 16-Bit, 1.5 LSB INL, 250 kSPS PulSAR Differential ADC in MSOP AD7687 FEATURES 16-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR) Dynamic range: 96.5 dB SNR: 95.5 dB at 20 kHz THD: −118 dB at 20 kHz True differential analog input range ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Single-supply 2.3 V to 5.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface Proprietary serial interface: SPI/QSPI™/MICROWIRE/DSP compatible Daisy-chain multiple ADCs and BUSY indicator Power dissipation 1.35 mW at 2.5 V/100 kSPS, 4 mW at 5 V/100 kSPS, and 1.4 μW at 2.
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