The 4-channel ADS1274 and 8-channel ADS1278 24-bit ADCs provide a delta-sigma, simultaneous-sampling measurement system for demanding multi-channel signal acquisition applications, such as vibration analysis, medical monitoring, industrial and energy metering equipment. Features include a 62-kHz bandwidth, a 0.8-µV/C offset drift, and a selectable frame-sync or SPI serial interface.

Four operating modes allow for optimization of speed (128-kSPS data rate), resolution (111-dB SNR), and power dissipation (7-mW/channel mode). The onboard decimation filter suppresses modulator and out-of-band noise, providing a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005 dB of ripple. Offered in HTQFP-64 packages, the ADS1274 is specified over -40¡ã to 125¡ãC and the ADS1278 is specified over -40¡ã to 105¡ãC.