Stay updated with the TI C2000 Real-time Microcontroller blogs
TI C2000 Real-Time Microcontroller: Control, Sensing, and Communication
TMS320F28x7x ADC Subsystem
The F2837xD includes four independent high-performance ADC modules which can be accessed by both CPU subsystems, allowing the device to efficiently manage multiple analog signals for enhanced overall system throughput. Each ADC module has a single sample-and-hold (S/H) circuit and using multiple ADC modules enables simultaneous sampling or sequential sampling. The ADC module is implemented using a successive approximation (SAR) type ADC with a configurable resolution of either 16-bits or 12-bits.
For 16-bit resolution, the ADC performs differential signal conversions with a performance of 1.1 MSPS, yielding 4.4 MSPS for the device. In differential signal mode, a pair of pins (positive input ADCINxP and negative input ADCINxN) is sampled and the input applied to the converter is the difference between the two pins (ADCINxP – ADCINxN). A benefit of differential signaling mode is the ability to cancel noise that may be introduced common to both inputs. For 12-bit resolution, the ADC performs single-ended signal conversions with a performance of 3.5 MSPS, yielding 14 MSPS for the device. In single-ended mode, a single pin (ADCINx) is sampled and applied to the input of the converter.
The F2837xD includes four independent high-performance ADC modules which can be accessed by both CPU subsystems, allowing the device to efficiently manage multiple analog signals for enhanced overall system throughput. Each ADC module has a single sample-and-hold (S/H) circuit and using multiple ADC modules enables simultaneous sampling or sequential sampling. The ADC module is implemented using a successive approximation (SAR) type ADC with a configurable resolution of either 16-bits or 12-bits.
For 16-bit resolution, the ADC performs differential signal conversions with a performance of 1.1 MSPS, yielding 4.4 MSPS for the device. In differential signal mode, a pair of pins (positive input ADCINxP and negative input ADCINxN) is sampled and the input applied to the converter is the difference between the two pins (ADCINxP – ADCINxN). A benefit of differential signaling mode is the ability to cancel noise that may be introduced common to both inputs. For 12-bit resolution, the ADC performs single-ended signal conversions with a performance of 3.5 MSPS, yielding 14 MSPS for the device. In single-ended mode, a single pin (ADCINx) is sampled and applied to the input of the converter.
Back to top of the page
