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Specifications
Mfr. Part #:
A17501POKATN-SDFRYJE
Package:
SIP-4
Key Attributes
Model Number:
A17501POKATN-SDFRYJE
Product Description
Product Overview
The A17501 is a single IC solution for rotational position sensing of a ring magnet target, designed for automotive and industrial electric motor applications. It features three Hall elements creating two independent differential channels, processed by digital circuits and algorithms to eliminate magnetic and system offsets, and mitigate vibration effects at low speeds. The IC provides accurate speed and direction information, with advanced calibration for consistent switch points across varying air gap, speed, and temperature. It is programmable for dual-phase speed/position or high-resolution speed/direction data, and can be configured for Fault Detection mode for ASIL B(D) utilization.
Product Attributes
- Brand: Allegro MicroSystems
- Package: 4-Pin SIP (suffix K)
- Material: Lead (Pb) free with 100% matte-tin-plated lead frame
- Certifications: ASIL B(D) compliant (ISO 26262), assessment pending
Technical Specifications
| Characteristic | Symbol | Notes | Rating/Value | Unit |
|---|---|---|---|---|
| ABSOLUTE MAXIMUM RATINGS | ||||
| 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 | |
| ELECTRICAL SUPPLY CHARACTERISTICS | ||||
| Supply Voltage | VCC | Voltage across VCC and GND | 4 24 | V |
| Undervoltage Lockout | VCC(UV) | 3.99 | V | |
| Supply Current | ICC | 10 15 | mA | |
| Reverse Supply Current | IRCC | VCC = 18 V | 10 | mA |
| ELECTRICAL PROTECTION CHARACTERISTICS | ||||
| Supply Clamp Voltage | VCSUPPLY | TA = 25C; ICC = 18 mA | 28 | V |
| Reverse Supply Clamp Voltage | VRCSUPPLY | TA = 25C; ICC = 3 mA | 18 | V |
| Output Clamp Voltage | VCOUT | TA = 25C; IOUT = 3 mA | 28 | V |
| Output Current Internal Limiter | IOUT(LIM) | Current limited by design for short circuit event on OUTA and OUTB independently; low impedance output state | 30 55 85 | mA |
| POWER-ON CHARACTERISTICS | ||||
| Power-On State | POS | For OUTA and OUTB VOUT(HIGH) | V | |
| Power-On Time | tPO | Time from VCC > VCC(min) to when sensor IC output is valid | 1 | ms |
| CALIBRATION CHARACTERISTICS | ||||
| First Output Edge | Amount of target rotation with constant direction following power-on until first electrical output transition; Dynamic Threshold option; see Figure 1 | 1 | TCYCLE | |
| Initial Calibration | Amount of target rotation with constant direction following power-on until calibration is complete; Dynamic Threshold option; see Figure 1 | 2 | TCYCLE | |
| OUTPUT CHARACTERISTICS | ||||
| Output Low Voltage | VOUT(LOW) | Fault Detection Mode disabled; IOUT = 10 mA | 0.165 0.35 | V |
| Output Low Voltage | VOUT(LOW) | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option | 0.5 1.25 | V |
| Output Low Voltage | VOUT(LOW) | Fault Detection Mode enabled; 12 V, 1 k option | 1.2 3.6 | V |
| Output High Voltage | VOUT(HIGH) | Fault Detection Mode disabled | VPULLUP | V |
| Output High Voltage | VOUT(HIGH) | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option | 3.75 4.5 | V |
| Output High Voltage | VOUT(HIGH) | Fault Detection Mode enabled; 12 V, 1 k option | 8.4 10.8 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option; High fault | 4.5 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option; Mid fault | 1.25 3.75 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option; Low fault | 0.5 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 12 V, 1 k option; High fault | 10.8 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 12 V, 1 k option; Mid fault | 3.6 8.4 | V |
| Fault Voltage | VFAULT | Fault Detection Mode enabled; 12 V, 1 k option; Low fault | 1.2 | V |
| Allowable Pullup Voltage | VPULLUP | Fault Detection Mode disabled | 4 24 | V |
| Allowable Pullup Voltage | VPULLUP | Fault Detection Mode enabled; 5 V, 1 k or 5 V, 3 k option | 4.75 5.25 | V |
| Allowable Pullup Voltage | VPULLUP | Fault Detection Mode enabled; 12 V, 1 k option | 11.4 12.6 | V |
| Allowable Pullup Resistor | RPULLUP | Fault Detection Mode disabled | 1 | k |
| Allowable Pullup Resistor | RPULLUP | Fault Detection Mode enabled; 5 V, 1 k option | 0.8 1.46 | k |
| Allowable Pullup Resistor | RPULLUP | Fault Detection Mode enabled; 5 V, 3 k option | 1.46 3.4 | k |
| Allowable Pullup Resistor | RPULLUP | Fault Detection Mode enabled; 12 V, 1 k option | 0.9 1.1 | 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; 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%; VPULLUP = 5 V; RPULLUP = 1 k; CLOAD = 2.2 nF; Fault Detection Mode disabled; Fast fall time option | 0.5 | s |
| Output Fall Time | tf | 90%10%; VPULLUP = 5 V; RPULLUP = 1 k; CLOAD = 2.2 nF; Fault Detection Mode disabled; Slow fall time option | 3.5 | s |
| Output Fall Time | tf | 90%10%; VPULLUP = 5 V; RPULLUP = 1 k; CLOAD = 2.2 nF; Fault Detection Mode enabled | 6 | 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 | |
| Jitter | 6; sinusoidal input signal; fOP = 1 kHz; BDIFF(pk-pk) = 150 G | 0.086 | target degrees | |
| Jitter | 6; sinusoidal input signal; fOP = 1 kHz; BDIFF(pk-pk) = 200 G | 0.064 | target degrees | |
2401220948_ALLEGRO-A17501POKATN-SDFRYJE_C19761430.pdf
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