ADC – Analog to Digital Converter

Quick Facts

What?

The ADC is available in Energy Mode 0 and Energy Mode 1 and is used to convert analog signals into a digital representation:

• 8 external input channels
• Up to 1 millon 12-bit samples/sec at only 200 µA
• Down to 0.5 μA with 1000 6-bit samples/sec

Why?

In many applications there is a need to measure analog signals and record them in a digital representation, without exhausting your energy source.

How?

The ADC is a Successive Approximation Register (SAR) architecture, with a resolution of up to 12 bits at up to one million samples per second. The integrated input mux can select inputs from 8 external pins and 6 internal signals. When using PRS and DMA the ADC can operate without CPU intervention, minimizing the number of powered up resources. The ADC can further be duty-cycled to reduce the energy consumption.

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