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ADS8671 - Texas Instruments

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ADS8671 SAR ADC

The ADS8671 and ADS8675 belong to a family of integrated data acquisition system based on a successive approximation (SAR) analog-to-digital converter (ADC). The devices feature a high-speed, high-precision SAR ADC, integrated analog front-end (AFE) input driver circuit, overvoltage protection circuit up to ±20 V, and an on-chip 4.096-V reference with extre.

Features


• 14-bit ADC with integrated analog front-end
• High speed:
  – ADS8671: 1 MSPS
  – ADS8675: 500 kSPS
• Software programmable input ranges:
  – Bipolar ranges: ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, and ±2.56 V
  – Unipolar ranges: 0 V
  –12.288 V, 0 V
  –10.24 V, 0 V
  –6.144 V, and 0 V
  –5.12 V
• 5-V analog supply: 1.65-V to 5-V I/O supply
• Constant resistive input impedance ≥ 1 MΩ
• Input overvoltage protection: up to ±20 V
• On-chip, 4.096-V reference with low drift
• Excellent performance:
  – DNL: ±0.25 LSB; INL: ±0.4 LSB
  – SNR: 84.5 dB; THD:
  –105 dB
• ALARM → high, low threshold
• multiSPI™ interface with.

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