Digital Continuous-Time Omnipolar Hall IC AH3931

Product catalog summary

Features and Benefits
The AH3931 is a digital continuous-time omnipolar Hall IC designed for various applications including automotive, consumer, and industrial electronics. It features a digital output with an omnipolar switch, quick response to magnetic field changes, a wide operating voltage range (2.5V to 22V), and strong resistance to mechanical stress. The device operates within a temperature range of -40℃ to 125℃ and is available in TO-92 and SOT-23-3L package options. It complies with EU RoHS and REACH standards.

Application Examples
The AH3931 is suitable for applications such as water flow sensing, liquid level detection, position sensing, speed sensing, contactless key/button, Bluetooth headsets, and door latch systems.

Selection Guide
The AH3931 is available in two package types: SOT-23-3L (Type M) and TO-92 (Type UA). The SOT-23-3L is a surface mount package, while the TO-92 is a through-hole package. Both types are lead-free with matte tin-plated leadframes.

General Description
The AH3931 includes a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output. It can operate with supply voltages from 2.5V to 22V, making it suitable for low voltage applications. The device is designed using CMOS technology for lower supply voltage and power consumption.

Electrical and Magnetic Operating Characteristics
The device operates with a supply voltage range of 2.5V to 22V and can sink up to 25 mA. It features a high-level output voltage, low-level output voltage, and specific power-on time, output leakage current, supply current, output-rise time, and output-fall time. The magnetic behavior is characterized by operating and release points for both south and north poles, ensuring stable switch status through steady hysteresis.

Absolute Maximum Ratings
The AH3931 can handle a maximum supply voltage of 22V, output current of 5mA, and operates within a temperature range of -40 to 85°C. The maximum junction temperature is 165°C, and it has an ESD sensitivity of 2kV according to the AEC-Q100-002 standard.

Package Information
The document provides detailed dimensions for the SOT-23-3L and TO-92 packages, ensuring proper integration into various systems.

Disclaimer
Nanjing AH Electronic Science & Technology Co., Ltd. reserves the right to improve product performance and reliability. The products are not intended for use in life support devices or systems where failure could cause harm. Users should verify the information before placing orders.

Catalog excerpts

Digital Continuous-Time Omnipolar Hall IC AH3931-1

2 Application Examples △ Automotive electronics, Consumer electronics and Industrial electronics △ Water flow sensing △ Liquid level detection △ Position Sensing △ Speed Sensing △ Contactless key/button △ Bluetooth headset △ Door latchsystem AH3931 Digital Continuous-Time Omnipolar Hall IC 1 Features and Benefits △ Digital output, omnipolar switch △ Quickly respond to changes in magnetic field △ Wide operating voltage range: 2.5V ~ 22V △ Strong resistance to mechanical stress △ Non-contact output, safety and reliable △ Operating temperature range: -40°C ~ 125°C △ TO-92 and SOT-23-3L package options △ Developed according to the EU RoHS and EU REACH Part Number NOTE 1. Hall ICs are soldered tin brazing for assembly, and wave soldering of SOT-23-3L surface-mounted components poses a risk of failure. 2. A risk of circuit failure may happen in non-brazing processes such as electric resistance welding, high-frequency welding, etc. 3. E: -25~85°C; K: -40~125°C; L: -40~150°C. Nanjing AH Electronic Science & Technology Co., Ltd. TEL: 025-84670370 WEB: www.ahest.net ADD: Building 3, Huaye Park, Qidi City, 8, Zhineng Road, Qilin Science and Technology Innovatio

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Digital Continuous-Time Omnipolar Hall IC AH3931-2

AH3931Digital Continuous-Time Omnipolar Hall IC 4 General Description The AH3931 is a digital omnipolar Hall switch. The device includes a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output to sink up to 25 mA. An on-board regulator permits operation with supply voltages of 2.5 to 22 V. The advantage of operating down to 2.5V is that the device can used in 2.5V applications or with additional external resistance in series with the supply pin for greater protection against high-voltage transient...

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Digital Continuous-Time Omnipolar Hall IC AH3931-3

AH3931Digital Continuous-Time Omnipolar Hall IC 6 Absolute Maximum Ratings Nanjing AH Electronic Science & Technology Co., Ltd. TEL: 025-84670370 ADD: Building 3, Huaye Park, Qidi City, 8, Zhineng Road, Qilin Science and Technology Innovation Park, Nanjing, China

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Digital Continuous-Time Omnipolar Hall IC AH3931-4

Digital Continuous-Time Omnipolar Hall IC 9 Magnetic Behavior When the magnet (S or N pole) is close to the sensor (|B|≥|BOP|), the sensor outputs a low level; when the magnet is far away from sensor (|B|≤|BRP|), the sensor outputs a high level. Steady Hysteresis (BHX=|BOPX- BRPX|) ensures its stable switch status. The magnetoelectric conversion characteristics of AH3931 are shown in the figure: Vout switch to high Vout switch to high Omnipolar Switch Nanjing AH Electronic Science & Technology Co., Ltd. ADD: Building 3, Huaye Park, Qidi City, 8, Zhineng Road, Qilin Science and Technology Innovation...

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Digital Continuous-Time Omnipolar Hall IC AH3931-5

AH3931 Digital Continuous-Time Omnipolar Hall IC Nanjing AH Electronic Science & Technology Co., Ltd. TEL: 025-84670370 ADD: Building 3, Huaye Park, Qidi City, 8, Zhineng Road, Qilin Science and Technology Innovation Park, Nanjing, China

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Digital Continuous-Time Omnipolar Hall IC AH3931-6

Digital Continuous-Time Omnipolar Hall IC Nanjing AH Eleotronio Soienoe & Teohnology Co., Ltd. TEL: 025-84670370 ADD: Building 3, Huaye Park, Qidi City, 8, Zhineng Road, Qilin Soienoe and Teohnology Innovation Park, Nanjing, China

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Digital Continuous-Time Omnipolar Hall IC AH3931-7

Digital Continuous-Time Omnipolar Hall IC Copyright 2003~2020 Nanjing AH Electronic Science & Technology Co., Ltd. Nanjing AH Electronic Science & Technology Co., reserves the right to improve the performance, reliability or manufacturability of its products at any time according to detailed specifications. Before placing an order, the user is cautioned to verify that the information being relied upon is up-to-date. AHNJ’s products are not to be used in any life support devices or systems (including but not limited to the listed devices or systems), in which a failure can reasonably be expected...

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