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ADS1278-EP - 24-Bit ADC

Datasheet Summary

Description

Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128 k samples per second (SPS), allowing simultaneous sampling of eight channels.

Features

  • 1.
  • 234 Simultaneously Measure Eight Channels.
  • Up to 128-kSPS Data Rate.
  • AC Performance: 62-kHz Bandwidth 111-dB SNR (High-Resolution Mode).
  • 108-dB THD.
  • DC Accuracy: 0.8-μV/°C Offset Drift 1.3-ppm/°C Gain Drift.
  • Selectable Operating Modes: High-Speed: 128 kSPS, 106 dB SNR High-Resolution: 52 kSPS, 111 dB SNR Low-Power: 52 kSPS, 31 mW/ch Low-Speed: 10 kSPS, 7 mW/ch.
  • Linear Phase Digital Filter.
  • SPI™ or Frame-Sync Serial Interfac.

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Full PDF Text Transcription

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ADS1278-EP www.ti.com SBAS579 – AUGUST 2012 OCTAL SIMULTANEOUS-SAMPLING 24-BIT ANALOG-TO-DIGITAL CONVERTER Check for Samples: ADS1278-EP FEATURES 1 •234 Simultaneously Measure Eight Channels • Up to 128-kSPS Data Rate • AC Performance: 62-kHz Bandwidth 111-dB SNR (High-Resolution Mode) –108-dB THD • DC Accuracy: 0.8-μV/°C Offset Drift 1.3-ppm/°C Gain Drift • Selectable Operating Modes: High-Speed: 128 kSPS, 106 dB SNR High-Resolution: 52 kSPS, 111 dB SNR Low-Power: 52 kSPS, 31 mW/ch Low-Speed: 10 kSPS, 7 mW/ch • Linear Phase Digital Filter • SPI™ or Frame-Sync Serial Interface • Low Sampling Aperture Error • Modulator Output Option (digital filter bypass) • Analog Supply: 5 V • Digital Core: 1.8 V • I/O Supply: 1.8 V to 3.
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