38.1 Overview
The PIC32CX-BZ2 12-bit High Speed Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) includes the following features:
- 12-bit resolution
- One ADC module, up to 2 Msps conversion rate
- Single-ended and/or differential input
- Supported in Sleep mode
- Two digital comparators
- Two digital filters supporting two modes:
- Oversampling mode
- Averaging mode
- Designed for motor control, power conversion and general purpose applications
The PIC32CX-BZ2 has one shared ADC module. This ADC module incorporates a multiplexer on the input to facilitate a group of inputs and provides a flexible automated scanning option through the input scan logic.
For the ADC module, the analog inputs are connected to the Sample and Hold (S&H) capacitor. The ADC module performs the conversion of the input analog signal based on the configurations set in the registers. When the conversion is complete, the final result is stored in the result buffer for the specific analog input and is passed to the digital filter and digital comparator if configured to use data from this particular sample.
Where,
- TAD = The frequency of the individual ADC module.
A block diagram of the ADC module is illustrated in the following figure.
