Diodes Incorporated AH1883-FJG-7

Overview

AH1883-FJG-7 from Diodes Incorporated is an ultra-sensitive, micropower omnipolar Hall effect switch IC in U-DFN2020-3 package, operating from 1.65V to 3.3V with 13µW typical supply power at 1.8V, 37–55 Gauss operate point (B_ops), and push-pull active-low output-used for lid detection and proximity sensing in portable electronics.

For engineers reviewing the AH1883-FJG-7 datasheet, AH1883-FJG-7 pinout, AH1883-FJG-7 application, or AH1883-FJG-7 equivalent, key selection criteria include magnetic sensitivity tolerance, chopper-stabilized temperature stability, RF noise immunity, and absence of external pull-up requirement in space-constrained designs.

Technical Context

The AH1883-FJG-7 integrates dual high-sensitivity Hall plates with chopper stabilization to suppress offset drift and maintain stable B_op/B_rp across -40°C to +85°C. Its sleep/awake logic enables ultra-low average current (7–12 µA) by cycling internal circuitry at 50–100 ms period.

It features omnidirectional magnetic response: either North or South pole triggers turn-on when |B| exceeds B_op (±37–55 G), and releases at B_rp (±6–29 G), delivering 3–8 G hysteresis. Output is push-pull, active-low, eliminating external bias components.

Key Specifications

Pinout & Package

U-DFN2020-3 (2.0 × 2.0 × 0.6 mm) is a lead-free, green, low-profile surface-mount package with wettable flanks for automated optical inspection. Pin 1 is marked by a corner chamfer or laser dot per Diodes AP02001 layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AL3320EUTDT-7 and TLE4913HTSA1, the AH1883-FJG-7 uniquely combines ultralow power, omnipolar response, chopper-stabilized accuracy, and U-DFN2020-3 packaging-making it the only viable choice for miniaturized, battery-critical consumer devices requiring <55 G operate points and sub-15 µW operation.

Availability

AH1883-FJG-7 is available at Aetrix Electronics and suitable for smartphone lid detection, tablet cover sensing, portable gaming console hinge monitoring, and wireless headset case status reporting requiring stable component supply and RoHS-compliant green packaging.

Supply support for AH1883-FJG-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 solutions for consumer, computing, and industrial markets.

The AH1883 belongs to Diodes' micropower Hall-effect switch product line, engineered specifically for ultra-low-power, space-constrained proximity and position sensing in portable battery-powered devices.

FAQ

What is the magnetic polarity requirement for AH1883-FJG-7 activation?

The AH1883-FJG-7 is an omnipolar Hall switch: it activates with either a North or South magnetic pole of sufficient strength (≥37 Gauss). This eliminates orientation constraints during mechanical integration, allowing flexible magnet placement in clamshell or sliding form factors without polarity alignment checks.

Does AH1883-FJG-7 require an external pull-up resistor?

No. The AH1883-FJG-7 features a push-pull output stage that actively drives both high and low states. When enabled, it pulls the OUTPUT pin to Vdd (high) or GND (low) without external biasing-reducing component count, PCB area, and potential noise coupling from pull-up networks.

How does chopper stabilization improve performance in AH1883-FJG-7?

Chopper stabilization dynamically cancels offset voltage in the Hall amplifier using modulation/demodulation, reducing temperature-induced drift to <±0.1 G/°C and minimizing sensitivity shift after soldering or mechanical stress-critical for maintaining consistent B_op/B_rp across production units and field environments.

Can AH1883-FJG-7 operate reliably at 1.65V supply?

Yes. The AH1883-FJG-7 is fully specified down to 1.65V, with guaranteed operation including 37–55 G B_ops, 7–12 µA average current, and 50–100 µs awake time. This enables direct interface with aging or discharged single-cell lithium batteries without voltage regulation overhead.