17 40 MSPS Analog-to-Digital Converter (ADC)

dsPIC33AK512MPS512 devices have five high-speed, 12-bit Analog-to-Digital Converters (ADC) that feature low conversion latency, high resolution and oversampling capabilities to improve performance in AC/DC and DC/DC power converters.

Each 40 MSPS Analog-to-Digital Converter (ADC) includes the following features:

  • 12-bit Resolution
  • Up to 40 MSPS Conversion Rate per Channel
  • Up to 15 Analog Input Pins
  • 7 Conversion Channels on ADC1, 8 Conversion Channels on ADC2, and 12 Conversion Channels on ADC3
  • Each Conversion Channel:
    • Can be assigned to any analog input (I/O pin or internal signal)
    • Can be set to a different sampling time
    • Supports discrete configuration
    • Can be configured as single-ended or differential
    • Conversion result can be formatted as unsigned or signed
    • Conversion result can be left-aligned (fraction format)
    • Has a separate 32-bit conversion result register
  • All Channels Support Four Sampling Modes:
    • Oversampling of multiple samples
    • Integration of multiple samples
    • Window (multiple samples accumulated when the gate signal is active).
    • Single conversion
  • All channels have a digital comparator to detect when the conversion result is less than, greater than, in bounds or out of bounds for the configurable thresholds.
  • Some channels have the second result accumulator which can be used for a filter implementation (refer to the specific device data sheet to see which channels have this feature).
  • Band Gap Reference and Temperature Sensor Diode inputs via UREF outputs
  • Operation during CPU Sleep and Idle Modes