Analog Peripherals

  • Differential Analog-to-Digital Converter with Computation and Context Switching:
    • Up to 43 external channels
    • Up to 140 ksps
    • Differential or single-ended ADC conversion
    • Automated math functions on input signals:
      • Averaging, filter calculations, oversampling and threshold comparison
    • Four Separate Contexts (settings and results) saved and accessible separately
    • Contexts can be accessed through firmware or DMA
    • Operates in Sleep
    • Nine internal analog channels
    • Hardware Capacitive Voltage Divider (CVD) support:
      • Adjustable Sample-and-Hold capacitor array
      • Guard ring digital output drive
      • Automates touch sampling and reduces software size and CPU usage when touch or proximity sensing is required
  • One 10-Bit Digital-to-Analog Converters (DAC):
    • Buffered output available on two I/O pins
    • Internal connections to ADC and Comparators
  • Two 8-Bit Digital-to-Analog Converters (DAC):
    • Buffered output available on two I/O pins
    • Internal connections to ADC, OPA and Comparators
  • Two High-Speed Comparators (CMP):
    • High-Speed mode and Low-Power modes available
    • Four external inputs
    • Configurable output polarity
    • External output via Peripheral Pin Select
  • Two Operational Amplifiers:
    • 5.5 MHz Gain Bandwidth
    • Programmable Gain using Internal Resistor Ladder
    • Built-in hardware peak detect operation
    • Automatic input offset voltage calibration
  • Zero-Cross Detect (ZCD):
    • Detect when AC signal on pin crosses ground
  • Voltage Reference:
    • Fixed Voltage Reference with 1.024V, 2.048V and 4.096V output levels
    • Internal connections to ADC, Comparator and DAC