The Analog Devices' ADAS3022 is a complete 16-bit, 1 MSPS, successive approximation–based analog-to-digital data acquisition system that is manufactured on Analog Devices' proprietary iCMOS® high voltage industrial process technology. The device integrates an 8-channel, low leakage multiplexer; a high-impedance programmable gain instrumentation amplifier (PGIA) stage with a high common-mode rejection; a precision, low drift 4.096 V reference and buffer; and a 16-bit charge-redistribution analog-to-digital converter (ADC) with successive approximation register (SAR) architecture. The ADAS3022 can resolve eight single-ended inputs or four fully differential inputs up to ±24.576 V when using ±15 V supplies. In addition, the device can accept the commonly used bipolar differential, bipolar single-ended, pseudo bipolar, or pseudo unipolar input signals, thus enabling the use of almost any direct sensor interface.
The ADAS3022 simplifies design challenges by eliminating signal buffering, level shifting, amplification/attenuation, common-mode rejection, settling time, or any of the other analog signal conditioning challenges while allowing a smaller form factor, faster time to market, and lower costs.