The new 2, 4 and 8-channel A/D converters are designed for battery-powered data acquisition modules, handheld meters, field instruments and communications applications as well as medical devices such as portable electrocardiograms and heart rate monitors.

The A/D converters are the most power-efficient in their class, dissipating a maximum of 1.7 mW at 1 MSPS (mega-samples per second), which is over 60 percent less power than the closest SAR A/D converter competitor. The A/D converters are housed in a tiny 4-mm × 4-mm LFCSP package and feature a 5 ppm/°C typ on-chip internal reference.

Features:

－ 1 MSPS throughput with flexible power/throughput rate management

－ Power consumption at 3V supply:

- 1.7 mW @ 1 MSPS

- 900 µW @ 500 kSPS

- 1.4 µW @ powerdown

－ Programmable channel sequencer with access to the multiplexer output eliminates the need for one buffer per channel saving both power and space

－ User programmable alert can signal an out-of-bounds condition without requiring the user to service the A/D converter output data (minimizes processor overhead/power)

－ SPI interface

－ Temperature range: –40°C to +125°C