TMAG5123EVM
TMAG5123EVM
This user’s guide describes the characteristics, operation, and use of the TMAG5123 high-precision, in-plane switch evaluation module (EVM). This EVM is designed to evaluate the performance of the TMAG5123. This document includes a schematic, printed-circuit board (PCB) layouts, and a complete bill of materials (BOM).
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1 Overview
The TMAG5123 is a family of high-precision, wide input voltage, in-plane Hall effect sensors designed for system challenges where higher magnetic precision is needed for more flexibility in design. The TMAG5123 evaluation module is populated with a Sensata 499-P36-20 test socket, which allows for convenient testing of all variants of the TMAG5123 family. Each device variant exhibits a different magnetic sensitivity, allowing utility for distance measurement in application. When the applied magnetic flux density exceeds the magnetic operating point (BOP) threshold, the device output drives into low voltage state. When the magnetic flux density returns to a value below the magnetic release point (BRP), the device output returns itself to a high voltage state. The TMAG5123EVM comes prepopulated with a TMAG5123B1 variant for out of the box evaluation. Additional variants can be sampled from www.ti.com. Table 1 lists the different device variants available.
Table 1. Device Variants
| DEVICE | BOP SENSITIVITY (MIN) | BOP SENSITIVITY (MAX) |
|---|---|---|
| TMAG5123A1 | 1 mT | 3 mT |
| TMAG5123B1 | 2.5 mT | 4.5 mT |
| TMAG5123C1 | 6 mT | 8 mT |
| TMAG5123D1 | 9 mT | 11 mT |
The device operates from a VCC range of 2.5 V to 38 V, and is available in a standard SOT-23 package.