Texas Instruments has incorporated power management functions in its latest 12-bit successive approximation (SAR) analogue-to-digital converter (ADC).

Once programmed through its I2C interface, the 2.2V ADS7924 can operate independently, periodically waking itself to scan all four ADC channels while using only 5µW.

For applications requiring additional signal conditioning, the device can share one operational amplifier for all four channels.

The ADC can wake up and shut down the op amp to synchronise with the sampling and conversion timing of the device.

The ADS7924 is sampling in a 24-pin, 3-mm x 3-mm QFN package.

www.ti.com