Temperature Compensated Hall Sensor DIODES AH1751-PG-B-A with Latch Operation and Wide Voltage Range
Product Description
The AH1751 is a single-digital-output Hall-effect sensor designed for high-temperature operation. It features an integrated Hall voltage generator, amplifier, comparator for noise rejection with switching hysteresis, and an open-collector output pre-driver. A band-gap regulator provides temperature-compensated supply voltage, allowing a wide operating supply range. The device operates as a latch: the OUT pin turns on (low) when magnetic flux density (B) exceeds the Bop threshold. It remains latched in the "on" state until B drops below the Brp threshold, at which point the OUT pin turns off. This sensor is suitable for applications such as rotor position sensing, current switches, encoders, and RPM detection.
Product Attributes
- Brand: Diodes Incorporated
- Status: NOT RECOMMENDED FOR NEW DESIGN (USE AH3774)
- Material: "Green" Molding Compound (No Br, Sb)
- Certifications: Totally Lead-free & Fully RoHS Compliant, Halogen and Antimony Free.
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
| Supply Voltage | VCC | 3.5 | 20 | V | Operating (Note 4) | |
| Operating Temperature Range | TA | -40 | 125 | C | Operating | |
| Output Saturation Voltage | VOUT (SAT) | 200 | 300 | mV | VCC = 12V, OUT "ON", IO = 50mA | |
| Supply Current | ICC | 3.5 | 6 | mA | VCC = 12V, OUT "OFF" | |
| Operation Point (South pole to brand side) | Bops | 5 | 70 | Gauss | @TA = +25C, VCC = 4V to 20V | |
| Release Point (South pole to brand side) | Brps | -70 | - | Gauss | @TA = +25C, VCC = 4V to 20V | |
| Hysteresis | Bhy | 75 | Gauss | (Brpx - Bopx) @TA = +25C, VCC = 4V to 20V | ||
| Output "ON" Current | IO (sink) | 100 | mA | Absolute Maximum Rating | ||
| Storage Temperature Range | TST | -65 | +150 | C | Absolute Maximum Rating | |
| Maximum Junction Temperature | TJ(MAX) | +150 | C | Absolute Maximum Rating | ||
| Power Dissipation (SIP3) | PD | 550 | mW | @TA = +25C | ||
| Power Dissipation (SC59 and SC59R) | PD | 230 | mW | @TA = +25C |
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