Based on the single-channel ADS1271, the ADS1274 • Up to 144kSPS Data Rate (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data • AC Performance: rates up to 144k samples per second (SPS), allowing 70kHz Bandwidth simultaneous sampling of four or eight channels. The 111dB SNR (High-Resolution Mode) devices are offered in identical packages, permitting –108dB THD drop-in expandability.Traditionally, industrial delta-sigma ADCs offering 0.8μV/°C Offset Drift good drift performance use digital filters with large 1.3ppm/°C Gain Drift passband droop. As a result, they have limited signal • Selectable Operating Modes: bandwidth and are mostly suited for dc High-Speed: 144kSPS, 106dB SNR measurements. High-resolution ADCs in audio High-Resolution: 52kSPS, 111dB SNR applications offer larger usable bandwidths, but the Low-Power: 52kSPS, 31mW/ch offset and drift specifications are significantly weaker Low-Speed: than respective industrial counterparts. The ADS1274 10kSPS, 7mW/ch and ADS1278 combine these types of converters, • Linear Phase Digital Filter allowing high-precision industrial measurement with • SPI™ or Frame-Sync Serial Interface excellent dc and ac specifications.