Analog Front End (AFE) for Merging Units and Multi-Function Protection Relays Reference Design
Description
This solution addresses the front end needs of Merging Units where multiple measurement channels for current and voltage are required. This implementation is modular: allowing easy expansion of channels while at the same time keeping the connectivity to the processor minimal by using the SPI daisy chain feature in the TI's SAR ADC. Additionally: this solution is compact because the AFE not only integrates the front end circuitry for each channel: but also integrates a voltage reference with low temperature drift
Features
- Integrated AFE solution including PGA and referenceThe solution enables high accuracy without calibration and lower temperature co-efficient (reduces variation in accuracy due to change in temperature)Modular approach + minimal MCU connectivity overheadIncrease number of input channels by adding additional SAR ADCsUsing daisy chain concept: the same SPI interface is used to connect multiple SAR ADCsMeasurement capabilities for protection and metering leveraging the higher sampling rate on the ADC
Applications
- Fitness machine
- Proximity switch
- Substation automation
- Circuit breaker (ACB
- MCCB
- VCB)
Product Categories
- Data converters
| Download the bill of materials for TIDA-00307 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00307| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00307 Gerber | 10 Oct 2014 | ZIP | 339 | |
| TIDA-00307 CAD Files | 10 Oct 2014 | ZIP | 2103 | |
| TIDA-00307 PCB | 10 Oct 2014 | 208 | ||
| TIDA-00307 Assembly Drawing | 10 Oct 2014 | 658 | ||
| TIDA-00307 BOM | 10 Oct 2014 | 105 | ||
| TIDA-00307 Schematic and Block Diagram | 10 Oct 2014 | 1195 |