Interface to a Sin/Cos Encoder with Sitara AM437x Reference Design
Description
The TIDA-00178 reference design is an EMC compliant industrial interface to Sin/Cos position encoders. Applications include industrial drives: which require accurate speed and position control.The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available: allowing for optimization of performance and cost. TIDA-00178 provides a direct connection to Sitara AM437x using SPI and QEP. For quick evaluation it features a 60-pin connector which directly fits the AM437x IDK. An example firmware for Sitara AM437x IDK is provided: which outputs the measured angle from the Sin/Cos encoder with up to 28-bit resolution through the Sitara’s USB virtual COM port.
Features
- EMC Compliant Industrial Interface Design for Sin/Cos Encoders with 1-Vpp Differential Output at 2.5-V Offset: Input Frequencies up to 500-kHzHigh-Resolution Interpolated Position: up to 28-bits Resolution: Cable Length Tested up to 70mFully Differential Analog Signal Chain for High Common Mode Noise Immunity with Dual 16-bit ADC with Drop-in Compatible 14- or 12-bit ADC Pending Desired ResolutionEasy to Connect to Sitara AM437x with SPI and QEP Interface. Connects directly to AM437x IDK 60-Pin HeaderExample Firmware for Sitara AM437x with High-Resolution Angle Calculated at 32-kHz and Angle Data Send via USB virtual COM Port for Easy Performance EvaluationDesigned for IEC61000-4-2:4-4 and 4-5 (ESD: EFT and Surge EMC Immunity Requirements)
Applications
- HVAC controller
- Servo drive position feedback
- Servo drive control module
- Off-highway vehicles electric drive
- HVAC motor control
- AC drive position feedback
- Servo drive functional safety module
- Robot servo drive
Product Categories
- Data converters
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| Download the bill of materials for TIDA-00178 | Download |
Test Data
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Download the test file for TIDA-00178| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00178 Gerber | 06 Jul 2015 | ZIP | 565 | |
| TIDA-00178 CAD Files | 06 Jul 2015 | ZIP | 3022 | |
| TIDA-00178 PCB | 06 Jul 2015 | 3990 | ||
| TIDA-00178 Assembly Drawing | 06 Jul 2015 | 560 | ||
| TIDA-00178 BOM | 06 Jul 2015 | 38 | ||
| TIDA-00178 Schematic | 06 Jul 2015 | 716 |