Hall Effect omnipolar switch DIODES AH3574-P-A with wide voltage range and minimal switch point drift
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Product Description
Product Overview
The AH3574 is a high voltage, high sensitivity Hall Effect Omnipolar switch IC designed for proximity, position, and level sensing applications. It operates over a wide supply range of 3.0V to 28V and features a chopper-stabilized architecture for reliable performance across temperature variations. The device offers superior temperature stability, minimal switch point drift, and enhanced immunity to stress and RF noise. Its robust design includes reverse blocking diode, Zener clamps on supply and output pins, and an over-current limit on the output. The single open-drain output can be switched on by either the South or North pole of a magnet.
Product Attributes
- Brand: Diodes Incorporated
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
Technical Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
| Absolute Maximum Ratings | |||||
| Supply Voltage (VDD) | Note 6 | 32 | V | ||
| Reverse Supply Voltage (VDDR) | Note 6 | -32 | V | ||
| Output Off Voltage (VOUT_MAX) | Note 6 | 32 | V | ||
| Continuous Output Current (IOUT) | 60 | mA | |||
| Reverse Output Current (IOUT_R) | -50 | mA | |||
| Storage Temperature Range (Ts) | -65 | +165 | C | ||
| Maximum Junction Temperature (TJ) | +150 | C | |||
| ESD HBM | 6 | kV | |||
| Recommended Operating Conditions | |||||
| Supply Voltage (VDD) | Operating | 3.0 | 28 | V | |
| Operating Temperature Range (TA) | Operating | -40 | +125 | C | |
| Electrical Characteristics | |||||
| Output ON Voltage (VOUT_ON) | IOUT = 20mA, B > BOP | - | 0.4 | V | |
| Output Leakage Current (ILKG) | VOUT = 28V, B < BRP, Output off | <0.1 | 10 | A | |
| Supply Current (IDD) | Output Open, TA = +25C | 3 | 3.5 | mA | |
| Supply Current (IDD) | Output Open, TA = -40C to +125C | - | 4 | mA | |
| Reverse Battery Current (IDD_R) | VDD = -18V, TA = -40C to +125C | -0.01 | 1 | mA | |
| Reverse Battery Current (IDD_R) | VDD = -28V, TA = -40C to +125C | -0.01 | 1.5 | mA | |
| Device Power-On Time (tP_ON) | VDD >= 3V, B > BOP (Note 7) | 10 | - | s | |
| Chopping Frequency (fC) | 800 | - | kHz | ||
| Response Time Delay (tD) | Time from Magnetic Threshold Reach to the Start of the Output Rise or Fall (Note 9) | 3.75 | - | s | |
| Output Rising Time (tR) | RL = 1k, CL = 20pF | 0.2 | 1 | s | |
| Output Falling Time (tF) | RL = 1k, CL = 20pF | 0.1 | 1 | s | |
| Output Current Limit (IOCL) | B > BOP (Note 10) | 30 | - | 55 | mA |
| Zener Clamp Voltage (VZ) | IDD = 5mA | 28 | - | - | V |
| Magnetic Characteristics | |||||
| Operation Point (BOPS) | South Pole to Part Marking Side, VDD = 12V, TA = +25C | 40 | - | Gauss | |
| Operation Point (BOPS) | TA = -40C to +125C | 20 | 40 | 60 | Gauss |
| Operation Point (BOPN) | North Pole to Part Marking Side, VDD = 12V, TA = +25C | -40 | - | Gauss | |
| Operation Point (BOPN) | TA = -40C to +125C | -60 | -40 | -20 | Gauss |
| Release Point (BRPS) | South Pole to Part Marking Side, VDD = 12V, TA = +25C | 25 | - | Gauss | |
| Release Point (BRPS) | TA = -40C to +125C | 10 | 25 | 45 | Gauss |
| Release Point (BRPN) | North Pole to Part Marking Side, VDD = 12V, TA = +25C | -25 | - | Gauss | |
| Release Point (BRPN) | TA = -40C to +125C | -45 | -25 | -10 | Gauss |
| Hysteresis (BHY) | |BOPX|-|BRPX|, VDD = 12V, TA = +25C | 15 | - | Gauss | |
| Hysteresis (BHY) | VDD = 12V, TA = -40C to +125C | 10 | 15 | 22 | Gauss |
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