Analog Front End (AFE) for Sensing Temperature in Smart Grid Applications Using RTD Reference Design
Description
This reference design enables up to 4 Resistor Temperature Detectors (RTD) to be connected through one ADC in manner such that the solution is both compact and modular. Communication from the ADC to the processor is though an SPI interface. If 8 RTDs are required for an application: simply connect up one more of these modules. This solution is flexible to where it can handle 2 wire: 3 wire or 4 wire type RTDs.
Features
- Based on the ADS1248 24-Bit Delta-Sigma (ΔΣ) ADC With Internal PGA and Selectable Gain up to 128Can Measure 2-: 3-: or 4-Wire RTD InputsMultiplexer (Analog Switch) to Switch Excitation Currents for Four RTD InputsUses Ratiometric Measurement for Higher AccuracyAccuracy I2C I/O Expander for ADC Interface Control and Excitation Current Switching Provided (No External I/Os Required)
Applications
- Solar power optimizer
- Multifunction relay
- Grid asset monitoring
- Signal generator
- Expansion module
- Substation automation
- Circuit breaker (ACB
- MCCB
- VCB)
Product Categories
- Data converters
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| Download the bill of materials for TIDA-00110 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00110| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00110 Altium | 15 Jan 2015 | ZIP | 3158 | |
| TIDA-00110 Gerber | 08 Jan 2015 | ZIP | 477 | |
| TIDA-00110 PCB | 08 Jan 2015 | 2249 | ||
| TIDA-00110 Assembly Drawing | 08 Jan 2015 | 455 | ||
| TIDA-00110 BOM | 08 Jan 2015 | 57 | ||
| TIDA-00110 Schematic and Block Diagram | 08 Jan 2015 | 545 |