ADC161S626 MicroPower ADC

Texas Instruments' ADC161S626 is a 16-bit successive-approximation register (SAR) analog-to-digital converter (ADC) with a maximum sampling rate of 250 kSPS. The ADC161S626 has a minimum signal span accuracy of ±0.003% over the temperate range of -40°C to +85°C. The converter features a differential analog input with an excellent common-mode signal rejection ratio of 85 dB, making the ADC161S626 suitable for noisy environments. It operates with a single analog supply (V_A) and a separate digital input/output (V_IO) supply. V_A can range from +4.5 V to +5.5 V and V_IO can range from +2.7 V to +5.5 V. This allows a system designer to maximize performance and minimize power consumption by operating the analog portion of the ADC at a V_A of +5 V while interfacing with a +3.3 V controller. The serial data output is binary 2's complement and is SPI™ compatible.