Product Overview
The ATS17501 is a single IC solution for rotational position sensing in automotive and industrial electric motor applications. It features three Hall elements for two independent differential channels, processed by digital circuits and robust algorithms to eliminate offsets and false transitions. The IC provides highly accurate speed and direction information, with advanced calibration for consistent switch points over air gap, speed, and temperature. It supports dual-phase gear speed/position or high-resolution speed/direction signaling and can be configured for Fault Detection mode for ASIL B(D) utilization. Housed in an SG package with an integrated magnetic pellet, it ensures manufacturing ease, consistent performance, and enhanced reliability.
Product Attributes
- Brand: Allegro MicroSystems
- Package: 4-Pin SIP (SG)
- Material: Lead (Pb) free, 100% matte-tin-plated lead frame
- Certifications: ASIL B(D) compliant (ISO 26262)
Technical Specifications
| Characteristic | Symbol | Notes | Rating | Unit |
|---|---|---|---|---|
| Supply Voltage | VCC | Refer to Power Derating section | 28 | V |
| Reverse Supply Voltage | VRCC | 18 | V | |
| Output Voltage | VOUT | Each output pin | 28 | V |
| Reverse Output Voltage | VROUT | Each output pin; RPULLUP 1 k | 0.5 | V |
| Output Sink Current | IOUT | Short-term output current for OUTA and OUTB independently, not intended for continuous operation | 50 | mA |
| Operating Ambient Temperature Range | TA | 40 to 160 | C | |
| Junction Temperature | TJ | 175 | C | |
| Storage Temperature Range | Tstg | 65 to 170 | C | |
| High-speed switching bandwidth | up to | 40 | kHz | |
| Power-On Time | tPO | Time from VCC > VCC(min) to when sensor IC output is valid | 1 ms | |
| First Output Edge | Amount of target rotation with constant direction following power-on until first electrical output transition; Dynamic Threshold option | 1 | TCYCLE | |
| Initial Calibration | Amount of target rotation with constant direction following power-on until calibration is complete; Dynamic Threshold option | 2 | TCYCLE | |
| Output Low Voltage | VOUT(LOW) | Fault Detection Mode disabled; IOUT = 10 mA | 0.165 0.35 | V |
| Output High Voltage | VOUT(HIGH) | Fault Detection Mode disabled | VPULLUP | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option; High fault | 4.5 | V |
| Allowable Pullup Voltage | VPULLUP | Fault Detection Mode disabled | 4 24 | V |
| Allowable Pullup Resistor | RPULLUP | Fault Detection Mode disabled | 1 | k |
| Allowable Load Capacitor | CLOAD | Fault Detection Mode enabled | 1 | nF |
| Output Leakage Current | IOUT(OFF) | Fault Detection Mode disabled; VOUT = VOUT(HIGH) | 10 | A |
| Duty Cycle | D | Speed output protocol; Using Reference Target 60-0; Dynamic Threshold option; sinusoidal input signal; fOP < 1 kHz | 45 50 55 | % |
| Output Rise Time | tr | 10%90%; VPULLUP = 5 V; RPULLUP = 1 k; CLOAD = 2.2 nF | 5 | s |
| Output Fall Time | tf | 90%10%; Fault Detection Mode disabled; Slow fall time option | 3.5 | s |
| Forward Pulse Width | tw(FWD) | 38 45 52 | s | |
| Reverse Pulse Width | tw(REV) | 76 90 104 | s | |
| Propagation Delay | td | Delay from the magnetic signal crossing a switch point threshold to the start of the output transition | 8 | s |
| Jitter | 6; sinusoidal input signal; fOP = 1 kHz; BDIFF(pk-pk) = 100 G | 0.13 | target degrees |
2401220954_ALLEGRO-ATS17501PSGATN-WDFUYJ_C19762048.pdf
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