TMAG5173A1QDBVRQ1

TMAG5173A1QDBVRQ1 is a Texas Instruments automotive high-precision linear 3D Hall-effect sensor with an I2C interface in a 6-pin SOT-23 package, AEC-Q100 qualified for -40 to +125 C operation. Its advantage is measurement confidence: three axes of linear Hall sensing with maximum plus/minus 2.5 percent sensitivity error at room temperature, plus/minus 1.1-degree X-Y angle error and a 20 kSPS single-axis conversion rate, so position and angle loops close faster and with less calibration. The A1 variant offers selectable plus/minus 40 mT and plus/minus 80 mT linear ranges for close-range magnet sensing, and the integrated CORDIC engine with gain and offset correction computes angle on-chip, offloading the host MCU. Functional-safety documentation supports ISO 26262 designs (systematic capability up to ASIL D, hardware integrity up to ASIL B / SIL 2), an 8 nA typical sleep current suits always-on sensing, and 2.3 to 3.6 V supply with 5.5 V-tolerant I2C and INT pins simplifies interfacing. Selection advice: pick the field-range code before the magnet — A1 (40/80 mT) for tight air gaps and precision, A2 (133/266 mT) for larger gaps; for SPI instead of I2C, the TMAG5170 is the sibling, and for non-automotive use the non-Q1 TMAG5173 costs less. If your design needs dual-die redundancy, ask about the TMAG5173D-Q1.