GENERAL DESCRIPTION

The AD7993/AD7994 are 4-channel, 10- and 12-bit, low power, successive approximation ADCs with an I2C-compatible interface. The parts operate from a single 2.7 V to 5.5 V power supply and feature a 2 µs conversion time. The parts contain a 4-channel multiplexer and track-and-hold amplifier that can handle input frequencies up to 11 MHz.

FEATURES

10- and 12-bit ADC with fast conversion time: 2 µs typ

4 single-ended analog input channels

Specified for VDD of 2.7 V to 5.5 V

Low power consumption

Fast throughput rate: 188 kSPS

Temperature range:−40°C to +125°C

Sequencer operation

Automatic cycle interval mode

I2C®-compatible serial interface

I2C interface supports standard, fast, and high speed modes

Out-of-range indicator/alert function

Pin-selectable addressing via AS

Shutdown mode: 1 µA max

16-lead TSSOP package

See AD7998 and AD7992 for 8-channel and 2-channel

equivalent devices, respectively.