Each ADC supports the following features:
- 3.2V default voltage with support to 3.3V depending on ADC modes. (See Signal Mode and ADC Modes of Operation).
- External reference set by VREFHI and VREFLO pins
- Single-ended (SE) signal conversions
- Differential-ended (DE) signal conversions
- Input multiplexer with up to 6
channels
- External channel mux option to expand available ADC channels
- 16 configurable SOCs
- Type 4 digital wrappers
that enhances the ADC capabilities to include:
- Over and Under
Sampling
- External Channel
support with at least 2 bit external select per ADC
- 16 individually addressable result registers
- Two trigger repeater modules
, enabling customizable hardware oversamplingand undersampling modes with little or no CPU overhead
- Multiple trigger sources:
- S/W (with available global synchronization for multiple ADCs) - software immediate start
- All ePWMs- ADCSOC A or B
- GPIO: INPUTXBAR[5]
- RTI Timers 0/1/2/3/4/5/6/7
- ADCINT1/2
- ECAP events in capture mode (CEVT1, CEVT2, CEVT3, and CEVT4) and APWM mode (period match, compare match, or both)
- Four flexible VIM interrupts triggers
- Burst mode
- Four post-processing blocks, each with:
- Saturating offset calibration
- Error from set-point calculation
- High, low, and zero-crossing compare, with interrupt and ePWM trip capability
- Trigger-to-sample delay capture
- Connections to 12 Simultaneous Compare Blocks (also known as ADC Safety Tiles)
- Aggregation functions: max, min, sum and average (binary shift)
- Absolute value function
- Result safety checkers to compare SOC results on same ADC or multiple ADC instances
Additionally, there are 2 Resolvers ADCs (SAR ADCs also known as ADC_R0 and ADC_R1) that can be used as general-purpose ADC. The SAR ADC_Rs have the additional features:
- Maximum sampling rate of 3.125 MSPS
- Up to 50MHz output clock to Resolver
- Additional RADC details can be found in the Resolver Features and Resolver Integration sections.