AD7938 Datasheet PDF - ADI

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