Diodes Incorporated AH1912-FA-EVM

Overview

AH1912-FA-EVM from Diodes Incorporated is an evaluation module for the AH1912 ultra-low power digital omnipolar Hall-effect switch IC, designed to validate magnetic sensing behavior in battery-constrained systems. It supports SC59 and X1-DFN1216-4 package variants, operates from 1.6V to 5.5V, draws only 1.6μA average supply current at 3V, and features ±30G typical operate/release points with 7G hysteresis - enabling reliable detection in smart covers, utility meters, and smoke detectors.

For engineers reviewing the AH1912-FA-EVM datasheet, AH1912-FA-EVM pinout, AH1912-FA-EVM application, or AH1912-FA-EVM equivalent, this module provides direct access to functional validation of magnetic threshold stability, sleep/awake timing (45μs awake time, 45ms period), output logic polarity, and ESD robustness (6kV HBM) under real-world PCB layout and field conditions.

Technical Context

The AH1912-FA-EVM implements a chopper-stabilized Hall sensor architecture with hibernating clocking logic, enabling micro-power operation while maintaining ±7G magnetic hysteresis and <±3G temperature drift over –40°C to +85°C. Its dual-package support (X1-DFN1216-4 and SC59) allows footprint verification across form factors without redesign.

The board integrates a 100nF ceramic decoupling capacitor per Diodes' recommendation, exposes VDD, GND, and OUTPUT pins via test points and solder pads, and maintains the IC's native open-drain output configuration - requiring no external pull-up for basic functionality but supporting configurable load termination during testing.

Key Specifications

Availability

AH1912-FA-EVM is available at Aetrix Electronics and suitable for battery-powered utility metering, smart appliance sensing, and IoT edge node development requiring stable component supply, rapid prototyping turnaround, and production-ready validation data.

Supply support for AH1912-FA-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, low-power signal conditioning and power management solutions for industrial, consumer, and automotive markets.

The AH1912 product line targets ultra-low-power magnetic sensing applications - optimized for long-life battery operation, wide voltage tolerance, and environmental stability in remote or safety-critical endpoints like gas meters and smoke detectors.

FAQ

What is the purpose of the AH1912-FA-EVM?

The AH1912-FA-EVM is a dedicated evaluation module for the AH1912 Hall-effect switch in X1-DFN1216-4 package. It provides a ready-to-use PCB with test points, decoupling capacitor, and exposed I/O to verify magnetic switching thresholds, timing behavior (awake time, duty cycle), supply current, and noise immunity - eliminating custom prototype effort for design-in validation.

Does the AH1912-FA-EVM include the AH1912 IC pre-mounted?

Yes, the AH1912-FA-EVM ships with a fully assembled and tested AH1912 IC in X1-DFN1216-4 package soldered to the board. The IC is configured per datasheet specifications: omnipolar operation, open-drain output, and factory-trimmed magnetic thresholds - enabling immediate functional testing with a magnet and multimeter or oscilloscope.

Can the AH1912-FA-EVM be used to evaluate both SC59 and X1-DFN1216-4 packages?

No - the AH1912-FA-EVM is specifically configured for the X1-DFN1216-4 (FA) package variant. To evaluate the SC59 version, Diodes offers the AH1912-W-EVM. Each EVM matches the mechanical, thermal, and electrical characteristics of its respective package, including pad layout, thermal dissipation path, and parasitic inductance/capacitance.

Is a separate power supply required to operate the AH1912-FA-EVM?

Yes - the module requires an external DC source between 1.6V and 5.5V applied to the VDD and GND test points. No onboard regulator or USB interface is included. A stable low-noise bench supply or battery is recommended to accurately measure sub-μA sleep current and avoid false triggering from ripple or transients.