Diodes Incorporated AH1886-ZG-7

Overview

AH1886-ZG-7 from Diodes Incorporated is a micropower, ultra-sensitive bipolar Hall effect switch with dual CMOS outputs (complementary Out1/Out2), designed for battery-powered portable electronics. It operates from 1.65V to 3.3V, consumes only 7–12 µA average supply current at 1.8V, and features ±37–55 G operate points with 3–8 G hysteresis for reliable magnetic detection in low-field environments.

For engineers reviewing the AH1886-ZG-7 datasheet, AH1886-ZG-7 pinout, AH1886-ZG-7 application, or AH1886-ZG-7 equivalent, key selection considerations include its SOT553 package, active-low Out1 with complementary Out2, chopper-stabilized architecture for offset cancellation, -40°C to +85°C operation, and ESD immunity >4 kV HBM - critical for handheld device proximity sensing and lid-open/close detection.

Technical Context

The AH1886 integrates two independent Hall plates and dual chopper-stabilized amplifiers with offset cancellation, enabling robust operation under mechanical stress and temperature variation. Its latch-type output behavior is defined by magnetic operate (Bop) and release (Brp) points, with hysteresis (Bhy) ensuring noise-immune switching.

Output1 is active-low and turns on when |B| exceeds Bop (±37–55 G); it remains latched until |B| falls below Brp (±6–29 G). Output2 provides the logical complement, supporting differential or redundancy-aware sensing topologies without external logic.

Key Specifications

Pinout & Package

Package: SOT553 - 5-pin, 1.7 mm × 1.2 mm × 0.6 mm surface-mount package with exposed thermal pad (not electrically connected), optimized for space-constrained mobile PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bipolar Hall switch applications.

Compared with AL3320EUA-7 and US1881EUA-7, the AH1886-ZG-7 uniquely delivers complementary outputs, chopper-stabilized precision, and sub-2 V operation - making it optimal for next-gen compact, low-power, dual-redundancy sensing in 1.8 V mobile systems.

Availability

AH1886-ZG-7 is available at Aetrix Electronics and suitable for cellular phone lid detection, PDA stylus docking, and cordless phone cradle sensing requiring stable component supply, RoHS-compliant green packaging, and tape-and-reel delivery for SMT production.

Supply support for AH1886-ZG-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, specializing in high-reliability, energy-efficient components for consumer, computing, and industrial markets.

The AH1886 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ultra-low-power, high-precision magnetic position and proximity detection in space- and battery-constrained portable devices.

FAQ

What is the function of Pin 3 (NC) on the AH1886-ZG-7?

Pin 3 is a no-connect terminal with no internal bond wire or circuit connection. It must remain unconnected on the PCB; Diodes Incorporated's recommended land pattern shows it as a non-soldered thermal relief pad. Routing traces to or soldering this pin may cause mechanical stress-induced parametric shift or yield loss.

Does the AH1886-ZG-7 require an external pull-up resistor on Out1?

No - Out1 uses a push-pull CMOS output stage capable of actively driving high or low. Unlike open-drain Hall switches, it does not require an external pull-up. However, a 100 nF ceramic bypass capacitor between Vdd and GND within 2 mm of the package is mandatory for chopper stabilization.

Can the AH1886-ZG-7 operate reliably at 1.65 V supply?

Yes - the datasheet specifies guaranteed operation down to 1.65 V across -40°C to +85°C. At this voltage, Bop remains within ±37–55 G, and average supply current stays ≤12 µA. Performance validation includes full electrical testing at min/max Vdd and temperature extremes per DS31216 Rev. 4.

How does the complementary output (Out2) relate to Out1 timing?

Out2 is the exact logical inverse of Out1 with matched propagation delay (<100 µs) and identical hysteresis behavior. Both outputs switch simultaneously on magnetic threshold crossing; no phase shift or skew is introduced - verified in functional block diagram and timing characterization data on page 3 of DS31216.