Diodes Incorporated AH3762Q-P-EVM

Overview

AH3762Q-P-EVM from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect latch evaluation module designed to validate bipolar magnetic sensing in brushless DC motor commutation, RPM measurement, and angular position sensing. It supports 3.0V–28V supply operation, delivers ±25G typical operate/release points, features chopper-stabilized architecture for <±0.5G/°C drift, and operates across –40°C to +150°C ambient.

For engineers reviewing the AH3762Q datasheet, AH3762Q pinout, AH3762Q application, or AH3762Q equivalent, this EVM enables rapid validation of latch polarity behavior (South-on/North-off), open-drain output switching timing (3.75µs response), thermal stability under load, and robustness against reverse supply stress (–32V) and ESD (HBM >8kV).

Technical Context

The AH3762Q-P-EVM implements a fully characterized test platform for the AH3762Q Hall latch IC, integrating its SC59-packaged die with standardized pull-up resistor (RL), decoupling capacitor (CIN = 10nF–100nF), and protection diodes per datasheet recommendations. The board exposes all three pins-VDD, GND, OUTPUT-for direct oscilloscope probing and magnetic field stimulus.

It replicates the functional block diagram's dynamic offset cancellation, low-pass filtering, and internal bandgap-regulated power switch control, enabling verification of magnetic hysteresis (20–80G), output saturation voltage (≤0.4V @20mA), and start-up time (10µs typical). The design maintains full AEC-Q100 environmental compliance during evaluation.

Key Specifications

Availability

AH3762Q-P-EVM is available at Aetrix Electronics and suitable for automotive BLDC motor control development, industrial encoder prototyping, and high-temperature position sensor qualification requiring stable component supply and traceable evaluation hardware.

Supply support for AH3762Q-P-EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and power applications.

The AH3762Q product line targets AEC-Q100-compliant magnetic sensing in safety-critical automotive subsystems, with design emphasis on wide-voltage operation, thermal stability, and latch polarity predictability under harsh EMI and temperature cycling.

FAQ

What is the purpose of the AH3762Q-P-EVM?

The AH3762Q-P-EVM is a dedicated evaluation module for the AH3762Q Hall-effect latch IC. It provides a ready-to-use PCB platform with correct decoupling (CIN), pull-up (RL), and protection circuitry to verify magnetic switching behavior, timing performance, and thermal stability under real-world automotive supply and temperature conditions.

Does the EVM support all AH3762Q package variants?

No - the AH3762Q-P-EVM is specifically configured for the SC59 package variant of the AH3762Q, as indicated by the "W" in the ordering code and confirmed by the pad layout matching Diodes' SC59 outline (DS38071 Rev. 6-3, page 11). SOT23 and SIP-3 variants require separate evaluation fixtures.

How is magnetic polarity verified on this EVM?

Polarity verification follows the datasheet's directional rule: for SC59, the South pole must be applied to the non-part-marking side to activate the output. The EVM exposes the IC's top surface and marking orientation, enabling precise alignment with calibrated magnets and confirming latched output behavior (ON at B > +25G, OFF at B < –25G) via oscilloscope monitoring of the open-drain node.

Is the AH3762Q-P-EVM recommended for new designs?

No - Diodes explicitly states "THE AH3762Q IS NOT RECOMMENDED FOR NEW DESIGNS. PLEASE USE THE AH3722Q." The AH3762Q-P-EVM remains valid for legacy system support, failure analysis, and comparative evaluation against the newer AH3722Q, but new designs should target the AH3722Q and its corresponding evaluation hardware.