Diodes Incorporated AH180-SNG-7

Overview

AH180-SNG-7 from Diodes Incorporated is a micropower omnipolar Hall-effect sensor switch in DFN2020-6 package, designed for magnetic proximity detection in battery-powered devices. It operates from 2.5V to 5.5V, consumes only 24 µW at 3V, switches on with either north or south magnetic pole, and features open-drain output with 40–60 G operate point and 10–30 G release point for reliable cover-sense applications in clamshell phones and notebooks.

For engineers reviewing the AH180-SNG-7 datasheet, AH180-SNG-7 pinout, AH180-SNG-7 application, or AH180-SNG-7 equivalent, key selection criteria include its micropower consumption (≤24 µW avg), omnipolar magnetic sensitivity (Bop ±40–60 G), chopper-stabilized architecture for thermal stability, and DFN2020-6 footprint compatibility with space-constrained portable designs.

Technical Context

The AH180 employs dual Hall plates and chopper stabilization to cancel offset drift and enhance immunity to mechanical stress and RF noise. Its latch-based output logic ensures stable state retention between magnetic transitions, with hysteresis of ≥15 G preventing chatter near switching thresholds.

Designed for ambient operation from –40°C to +85°C, it delivers consistent magnetic performance across voltage (2.5–5.5 V) and temperature ranges. The open-drain output requires an external pull-up resistor (10–100 kΩ) and supports typical load currents up to 1 mA with <0.3 V saturation voltage.

Key Specifications

Pinout & Package

DFN2020-6 package: 2.0 mm × 2.0 mm × 0.6 mm body, wettable flank leads, exposed thermal pad (not electrically connected), RoHS-compliant green molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar omnipolar Hall-effect switch applications.

Compared with AL33025-30DQFT and TMAG5170AHQDBVR, AH180-SNG-7 offers the lowest quiescent power and simplest integration for binary cover-sense tasks, while maintaining superior thermal stability and smaller DFN2020-6 footprint - making it optimal for space- and battery-limited portable designs.

Availability

AH180-SNG-7 is available at Aetrix Electronics and suitable for clamshell phone cover detection, notebook lid sensing, and contactless wearable activation requiring stable component supply, consistent magnetic trip points, and long-term RoHS-compliant sourcing.

Supply support for AH180-SNG-7 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

The AH180 belongs to Diodes' Hall-effect sensor switch product line, engineered specifically for ultra-low-power, high-reliability magnetic presence detection in portable consumer electronics - emphasizing micropower operation, omnipolar flexibility, and robustness in compact form factors.

FAQ

What is the minimum recommended pull-up resistor value for AH180-SNG-7's open-drain output?

The datasheet specifies a recommended pull-up range of 10 kΩ to 100 kΩ. At 10 kΩ, the output achieves <0.3 V saturation with 1 mA sink current, ensuring clean logic-low levels for 3.3 V or 5 V microcontrollers. Lower values increase power consumption unnecessarily; higher values risk slow rise times in noisy environments.

Does AH180-SNG-7 require external capacitors for stable operation?

Yes - a 10 nF to 100 nF ceramic decoupling capacitor is required between Vdd and GND, placed as close as possible to the device pins. This stabilizes the internal regulator and enhances immunity to power-supply noise and RF interference, especially critical in cellular-band environments.

Can AH180-SNG-7 operate reliably at 2.5 V supply voltage?

Yes - the device is fully specified from 2.5 V to 5.5 V. At 2.5 V, average supply current remains ≤24 µA, Bop/Brp shift is within ±5 G, and output saturation voltage stays below 0.4 V at 1 mA load, enabling direct use with single-cell lithium batteries without LDO regulation.

Is the DFN2020-6 package of AH180-SNG-7 compatible with standard reflow profiles?

Yes - the DFN2020-6 package complies with IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports standard lead-free reflow profiles (peak 260°C). Its wettable flanks facilitate automated optical inspection (AOI) of solder joints, and the exposed thermal pad improves thermal dissipation during reflow and operation.