Diodes ah3781 p a hall effect latch ic designed for brushless dc motor and linear encoder applications
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Product Description
Product Overview
The AH3781 is a high-voltage, high-sensitivity Hall Effect latch IC with an internal pull-up resistor, designed for applications such as brushless DC motor commutation, flow meters, linear encoders, and position sensors. It operates over a wide supply range of 3.0V to 28V and features chopper stabilization for superior temperature stability and minimal switch point drift. The device offers robustness with Zener clamps on supply and output pins, and an output overcurrent limit. It is activated by a South pole and deactivated by a North pole of sufficient strength.
Product Attributes
- Brand: Diodes Incorporated
- Product Family: AH3781
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
Technical Specifications
| Characteristic | Parameter | Value | Unit | Conditions |
|---|---|---|---|---|
| Electrical Characteristics | Supply Voltage Range | 3.0 to 28 | V | Operating |
| Operating Temperature Range | -40 to +125 | C | Operating | |
| Output On Voltage (VOUT_ON) | -0.2 to 0.4 | V | IOUT = 20mA, B > BOP | |
| Internal Pull-Up Resistance (RPU) | 10 to 18 | k | TA = -40C to +125C | |
| Magnetic Characteristics | Operate Point (BOP) | +25 | Gauss (Typical) | VDD = 12V, TA = +25C |
| Release Point (BRP) | -25 | Gauss (Typical) | VDD = 12V, TA = +25C | |
| Hysteresis (BHY) | 50 | Gauss (Typical) | VDD = 12V, TA = +25C | |
| Absolute Maximum Ratings | Supply Voltage (VDD) | 32 | V | Transient Stress Rating |
| Storage Temperature Range | -65 to +165 | C | ||
| Package | SOT23, SIP-3 | Industry Standard |
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