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: -40ºC ~ 125ºC
TO-92 and SOT-23-3L package options
Developed according to the EU RoHS and EU REACH
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
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 events.
The AH3931, produced with CMOS technology, is asked for lower supply voltage and less power supply. It is available in two package types: SOT-23-3L (Type M), and TO-92 (Type UA). Each package is lead (Pb) free, with 100% matte tin plated leadframes.
| Type | Manufacturing Techniques | Output State | Packing | Supply Curent (μA) | Load (mA) | Operating Voltage (V) | BOP (mT) | BRP (mT) | BH (mT) | Operating Temperature (ºC) |
| AH3661 | CMOS | Open drain | SOT23/TO92 | 2.8 | 1 | 2.5~5.5 | ±4 | ±2.7 | 1.3 | -40~85 |
| AH3662 | CMOS | 100k pull-up | SOT23/TO92 | 6.0 | 1 | 2.5~5.5 | ±2 | ±1 | 1.0 | -40~85 |
| AH3663 | CMOS | Open drain | SOT23/TO92 | 6.0 | 1 | 2.5~5.5 | ±2 | ±1 | 1.0 | -40~85 |
| AH3664 | COMS | Open drain | SOT23/TO92 | 1.0 | 1 | 1.65~5.5 | ±3 | ±2 | 1.0 | -40~85 |
| Type | Manufacturing Techniques | Output State | Packing | Supply Curent (mA) | Load (mA) | Operating Voltage (V) | BOP (mT) | BRP (mT) | BH (mT) | Operating Temperature (ºC) |
| AH3931 | CMOS | Open drain | SOT23/TO92 | 1.5 | 5 | 2.5~22V | ±3 | ±1.5 | 1.5 | -40~85 |
Q: What's your MOQ?
A: MOQ for each item is 1000 pcs for TO-92UA and SOT-89, 3000pcs for SOT-23
Q: What's your warranty?
A: All our products will be 100% tested before shipment and have lifetime warranty.
Q: Can I get a Free Sample?
A: You can ask our staff for applying Free Samples.
Q: Are you a manufacturer ?
A: Yes, we are a manufacturer.
Q: How long is your delivery time?
A: We have different lead times according to the quantity of the order. Usually we have in-stock products within 10 thousand pieces for most parts.
Q: How can I place order?
A: You can contact us by email with your order details.
Q: What payment terms do you accept?
A: We can accept T/T in advance, or Paypal at small amount.
In May 2003, several Chinese senior experts in magnetic sensors field jointly invest to establish "Nanjing AH Electronic Science & Technology Co., Ltd" by themselves' technology and market advantages. The company is specialized in researching and developing, designing and manufacturing and selling Hall IC, Zero power consumption sensor and their application products.
