The AD7667 is a 16-bit， 1 MSPS， charge redistribution SAR analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed 16-bit sampling ADC， an internal conversion clock， internal reference， error correction circuits， and both serial and parallel system interface ports. It features a very high sampling rate mode （Warp）， a fast mode （Normal） for asynchronous applications， and a reduced power mode （Impulse） for low power applications where power is scaled with the throughput. The AD7667 is hardware factory-calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio （SNR） and total harmonic distortion （THD） in addition to the more traditional dc parameters of gain， offset， and linearity. Operation is specified from –40°C to +85°C.