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Unipolar hall-effect sensor ics, often referred to as "unipolar switches, " are operated by a positive magnetic field. A single magnet presenting a south polarity (positive) magnetic field of sufficient strength (magnetic flux density) will cause the device to switch to its on state. After it has been turned-on, the unipolar IC will remain turned-on until the magnetic field is removed and the IC reverts to its off state.
AH3134
High sensitive hall-effect switch integrated circuits
These hall-effect switches are monolithic integrated circuits with tighter magnetic specifications and high sensitivity, designed to operate continuously over extended temperatures to +150° C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.
Each device includes a voltage regulator for operation with supply voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic hall-voltage generator, temperature compensation circuitry, small-signal amplifier, schmitt trigger, and an open-collector output to sink up to 25 ma. With suitable output pull up, they can be used with bipolar or CMOS logic circuits.
| Absolute maximum rating | ||||
| Parameter | Symbol | Value | Unit | |
| Supply Voltage | VCC | 24 | V | |
| Magnetic Flux Density | B | Unlimited | mT | |
| Output OFF Voltage | Vce | 40 | V | |
| Continuous Output Current | IOL | 25 | mA | |
| Operating Temperature Range | TA | AH31XXE | -25~85 | º C |
| AH31XXL | -40~150 | º C | ||
| Storage Temperature Range | TS | -55~150 | º C | |
| Parameter | Symbol | Test condition | Type and Value | Unit | ||
| min | typ | max | ||||
| Supply Voltage | VCC | 4.5 | - | 24 | V | |
| Output Saturation Voltage | VOL | Iout=15mA B> BOP | - | 200 | 400 | mV |
| Output Leakage Current | IOH | Vout=24V B | - | 0.1 | 10 | μ A |
| Supply Current | ICC | VCC=24V Output Open | - | - | 10 | mA |
| Output Rise Time | tr | RL=820Ω CL=20PF | - | 0.12 | - | μ S |
| Output Fall Time | tf | RL=820Ω CL=20PF | - | 0.18 | - | μ S |
| Parameter | Symbol | AH3135 | Unit | ||
| min | typ | max | |||
| Operate Point | BOP | - | - | 11 | mT |
| Release Point | BRP | 3 | - | - | mT |
| Hysteresis | BH | 5 | - | - | mT |
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.
