GENERAL DESCRIPTION

The AD7997/AD7998 are 8-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 an 8-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

8 single-ended analog input channels

Specified for VDD of 2.7 V to 5.5 V

Low power consumption

Fast throughput rate: up to 188 kSPS

Sequencer operation

Automatic cycle mode

I2C®-compatible serial interface supports standard, fast, and high speed modes

Out-of-range indicator/alert function

Pin-selectable addressing via AS

Shutdown mode: 1 µA max

Temperature range: −40°C to +85°C

20-lead TSSOP package

See the AD7992 and AD7994 for 2-channel and 4-channel equivalent devices, respectively