GENERAL DESCRIPTION
●The AD7938/AD7939 are 12-bit and 10-bit,high speed,low power,successive approximation (SAR) ADCs. The parts operate from a single 2.7 V to5.25 V power supply and feature throughput rates up to1.5 MSPS.The parts contain a low noise, wideband width,differential track-and-hold amplifier that can handle input frequencies up to50 MHz.
●FEATURES
●Fast throughput rate:1.5 MSPS
●Specified for VDDof 2.7 V to 5.25 V
●Low power
● 6 mW max at 1.5 MSPS with 3 V supplies
● 13.5 mWmax at1.5 MSPS with5 V supplies
●8 analog input channels with a sequencer
●Software configurable analoginputs
● 8-channel single-ended inputs
● 4-channel fully differential inputs
● 4-channel pseudo-differential inputs
● 7-channel pseudo-differential inputs
●Accurate on-chip 2.5 V reference
●±0.2% max@ 25°C, 25 ppm/°C max
●70 dB SINAD at50 kHz input frequency
●Nopipeline delays
●High speed parallel interface—word/byte modes
●Full shutdown mode: 2 µA max
●32-leadLFCSP and TQFP package
