New from Texas Instruments is the 12-bit ADS7924 successive approximation (SAR) analog-to-digital converter (ADC). Through intelligent system power management features, the 2,2 V device works with any low-power system requiring sensor monitoring to lower power across the system.
Once programmed through its I²C interface, the IC can operate independently, periodically waking itself to scan all four ADC channels while using only 5 μW. This frees the MCU to process other activities or power down entirely to yield power savings in energy harvesting, medical, communications, remote sensor signal monitoring and portable applications.
For applications requiring additional signal conditioning, the ADS7924 can share one operational amplifier for all four channels. It can wake up and shut down the op-amp to synchronise with the sampling and conversion timing of the ADS7924 for additional power savings.
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