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Allegro MicroSystems ATS17501PSGATN-VDFUYJ
- Part No.:
- ATS17501PSGATN-VDFUYJ
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SSIP
- Datasheet:
-
ATS17501PSGATN-VDFUYJ.pdf
- Description:
- EMOTOR DUAL OUTPUT DIFFERENTIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,392
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Product details
Overview
ATS17501PSGATN-VDFUYJ from Allegro MicroSystems is a dual-output differential Hall-effect rotational position and speed sensor IC designed for ferrous gear targets in automotive electric-motor and industrial motor-control systems. It integrates three Hall elements, on-chip EEPROM, temperature compensation, and ASIL B SEooC safety capability per ISO 26262. It delivers high-resolution XOR speed + direction output with up to 40 kHz switching bandwidth and operates across –40 °C to +160 °C.
For engineers reviewing the ATS17501PSGATN-VDFUYJ datasheet, ATS17501PSGATN-VDFUYJ pinout, ATS17501PSGATN-VDFUYJ application, or ATS17501PSGATN-VDFUYJ equivalent, this page provides verified functional identity, calibrated switch-point behavior over air gap and temperature, fault-detection mode operation, differential channel timing relationships, and real-world magnetic immunity specifications - all critical for safety-critical motor control and ABS/ESP system integration.
Technical Context
The ATS17501PSGATN-VDFUYJ implements two independent differential Hall channels spaced at 1.75 mm pitch, each feeding a full-range ADC and digital signal processor that applies dynamic, fixed, or hybrid threshold algorithms to eliminate magnetic offset drift and vibration-induced false transitions. Its digital controller performs real-time peak tracking and EEPROM-stored calibration to maintain ±40% hysteresis (BOP = 70%, BRP = 30%) across air gaps up to 3 mm and temperatures from –40 °C to +160 °C.
It supports configurable output protocols including XOR speed + direction (–V option), left/right pulse (–P), or dual-channel speed (–S), with fault-detection mode enabling three-level VFAULT signaling (HIGH/MID/LOW) for open-wire, short-to-ground, or internal diagnostic faults - all while maintaining ASIL B compliance when integrated per the safety manual.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4–24 V - supports direct connection to automotive battery rails with undervoltage lockout at 3.99 V |
| Operating Temperature | –40 °C to +160 °C - qualified for under-hood and traction-motor environments |
| Max Switching Frequency | 40 kHz - enables accurate speed sensing up to ~10,000 RPM on 60-tooth gears |
| Output Configuration | Dual open-drain outputs (OUTA/OUTB) - supports XOR speed + direction protocol per –V suffix |
| Air Gap Range | 0.75–3.0 mm - validated with Reference Target 60-0; reduced to 2.75 mm when fault-detection mode enabled |
| Safety Certification | ASIL B SEooC per ISO 26262 - hardware safety element out of context, requires integration per safety manual |
| Magnetic Immunity | Immune to common external magnetic disturbance - validated via differential architecture and algorithmic rejection of offset/amplitude drift |
Pinout & Package
The ATS17501PSGATN-VDFUYJ is housed in a Pb-free 4-pin single inline package (SIP) with integrated back-biasing rare-earth magnet and 100% matte-tin-plated lead frame. The branded face orientation defines mechanical mounting alignment relative to the ferrous target.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 4–24 V; includes on-chip regulator and undervoltage lockout at 3.99 V |
| OUTA | Configurable output A | Programmable as XOR speed, left-channel speed, or left-channel pulse - open-drain, 55 mA current limit |
| OUTB | Configurable output B | Programmable as direction, right-channel speed, or right-channel pulse - open-drain, 55 mA current limit |
| GND | Ground reference | Common return for supply, outputs, and internal analog/digital circuits; tied to exposed thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Dual differential Hall channels | Enables robust direction detection via phase relationship between left/right magnetic signals, rejecting vibration-induced false transitions at startup and low speed |
| Dynamic/fixed/hybrid threshold algorithms | Eliminates need for external calibration; dynamic mode adapts to magnetic offset drift, fixed mode enables immediate post-power-on accuracy |
| Fault-detection mode (ASIL B) | Provides three-level output signaling (VFAULT HIGH/MID/LOW) for diagnostics of open-circuit, short-to-ground, and internal IC faults |
| EEPROM-based traceability | Stores factory-programmed calibration data and device identifiers for full lifecycle traceability in automotive production |
| Integrated back-biasing magnet | Ensures consistent magnetic coupling across temperature and mechanical tolerance; eliminates need for external magnet assembly |
Applications
| Automotive ABS Wheel Speed Sensing | Electric Power Steering (EPS) Motor Position |
|---|---|
Use Scenario: Monitoring rotational speed and direction of wheel-mounted ferrous tone rings in anti-lock braking systems under extreme temperature and vibration. IC Role / Device Role / Timing Role: Dual-output differential sensor providing XOR speed and direction signals to ECU with <8 µs propagation delay and immunity to gear tooth jitter. Use Value: Enables precise wheel slip detection and closed-loop brake pressure modulation at speeds down to 0.1 km/h, meeting ASIL B requirements without external signal conditioning. | Use Scenario: Detecting rotor position and speed in brushless DC motors used in column-assist EPS systems, where compact packaging and high reliability are mandatory. IC Role / Device Role / Timing Role: Integrated Hall sensor with on-chip calibration delivering synchronized speed and direction data to motor controller MCU via two open-drain outputs. Use Value: Reduces BOM count by eliminating discrete Hall latches and external EEPROM; supports fail-safe torque assist during partial sensor degradation via fault-detection mode. |
| Industrial Servo Motor Feedback | Traction Inverter Motor Control |
Use Scenario: Providing high-resolution speed and direction feedback for closed-loop position control in CNC machine spindle drives operating at 0–12,000 RPM. IC Role / Device Role / Timing Role: Differential gear tooth sensor delivering 40 kHz capable XOR output with <5 µs rise/fall time, synchronized to motor shaft rotation. Use Value: Enables sub-1° position resolution at high speed; small-signal lockout prevents erroneous transitions during mechanical resonance or load-induced air-gap variation. | Use Scenario: Real-time rotor position and speed acquisition in EV traction inverters, where thermal stability and magnetic noise immunity are critical near high-current busbars. IC Role / Device Role / Timing Role: ASIL B-compliant Hall sensor with integrated magnet and temperature-compensated amplifier, directly interfacing with inverter gate driver logic. Use Value: Maintains accurate commutation timing across –40 °C to +160 °C junction temperature; fault-detection mode alerts MCU to open-load or short-circuit conditions before inverter damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A17501PSGATN-SDFUYJ | No integrated magnet; requires external back-biasing magnet assembly and additional mechanical alignment | Suitable for applications where magnetic field strength must be tuned per target geometry or where magnet replacement is required in service | Select only if custom magnetic tuning or field adjustability is required; increases design complexity and assembly cost |
| ATS605LSGTN-SDFUYJ | Single-output, non-ASIL, fixed-threshold-only architecture; no fault-detection mode or EEPROM traceability | Targeted at cost-sensitive industrial fans or pumps without functional safety requirements | Use only for non-safety-critical applications; lacks ASIL B qualification, dual-channel diagnostics, and programmable protocols |
Compared with A17501PSGATN-SDFUYJ and ATS605LSGTN-SDFUYJ, the ATS17501PSGATN-VDFUYJ uniquely combines integrated magnet, ASIL B SEooC compliance, dual differential outputs with programmable protocols, and EEPROM-based calibration - making it the only option qualified for automotive safety-related motor control where fault detection and traceability are mandatory.
Availability
ATS17501PSGATN-VDFUYJ is available at Aetrix Electronics and suitable for automotive ABS systems, electric power steering modules, industrial servo drives, and EV traction inverter feedback requiring stable component supply, long-term lifecycle support, and ASIL B-compliant sourcing.
Supply support for ATS17501PSGATN-VDFUYJ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Allegro MicroSystems is a U.S.-based semiconductor company specializing in high-performance Hall-effect sensors, motor drivers, and power ICs for automotive and industrial motion control.
The ATS17501 product line was developed to deliver robust, safety-certified rotational sensing for electric-motor applications where vibration immunity, wide air-gap tolerance, and ASIL B integration are essential - particularly in braking, steering, and propulsion systems.
FAQ
What output protocol does ATS17501PSGATN-VDFUYJ support by default?
The ATS17501PSGATN-VDFUYJ is configured for the –V output protocol: OUTA delivers XOR speed output and OUTB delivers direction output. This configuration is factory-programmed and stored in EEPROM. Protocol selection is fixed per part number suffix and cannot be reprogrammed in-system without dedicated Allegro programming equipment.
Does ATS17501PSGATN-VDFUYJ require an external pull-up resistor?
Yes, ATS17501PSGATN-VDFUYJ requires external pull-up resistors on both OUTA and OUTB. For fault-detection mode disabled, 1 kΩ is recommended. When fault-detection mode is enabled, pull-up values depend on VPULLUP: 1 kΩ for 5 V, 0.9–1.1 kΩ for 12 V. Values outside these ranges may cause incorrect VFAULT level interpretation or timing violations.
How does ATS17501PSGATN-VDFUYJ handle vibration during motor startup?
ATS17501PSGATN-VDFUYJ uses vibration-robust signal tracking: upon detecting direction change, it prevents inward bounding of peak-tracking signals to avoid false switch-point setting from vibration-induced oscillations. Combined with startup hysteresis and small-signal lockout, this ensures reliable first-edge detection even under severe mechanical resonance at zero-speed conditions.
What is the maximum allowable air gap for ATS17501PSGATN-VDFUYJ with Reference Target 60-0?
With Reference Target 60-0 and fault-detection mode disabled, ATS17501PSGATN-VDFUYJ supports up to 3.0 mm air gap at fOP < 10 kHz using the –D algorithm. When fault-detection mode is enabled, maximum air gap reduces to 2.75 mm due to stricter signal-to-noise margin requirements for VFAULT level integrity.
Is ATS17501PSGATN-VDFUYJ pin-compatible with other ATS17501 variants?
Yes, all ATS17501 variants - including ATS17501PSGATN-VDFUYJ - share identical 4-pin SG SIP package, pinout (VCC/OUTA/OUTB/GND), and mechanical footprint. Differences are limited to factory-programmed features (output protocol, threshold algorithm, fault-detection enable), not physical connectivity or thermal design.
ATS17501PSGATN-VDFUYJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 4-SSIP
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- -
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- -
- Linear Range:
- -
- Output:
- Analog Voltage
- Output Signal:
- -
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- 100 Ohms
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4V ~ 24V
- Mounting Type:
- Through Hole
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 4-SIP
ATS17501PSGATN-VDFUYJ FAQ
1.How can I place an order for ATS17501PSGATN-VDFUYJ through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS17501PSGATN-VDFUYJ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ATS17501PSGATN-VDFUYJ reliable?
The price and inventory of ATS17501PSGATN-VDFUYJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS17501PSGATN-VDFUYJ is usually 5 days.
3.What payment methods are accepted for ATS17501PSGATN-VDFUYJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS17501PSGATN-VDFUYJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS17501PSGATN-VDFUYJ?
ATS17501PSGATN-VDFUYJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS17501PSGATN-VDFUYJ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ATS17501PSGATN-VDFUYJ?
For technical support, including ATS17501PSGATN-VDFUYJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS17501PSGATN-VDFUYJ requirements.
6.How does Aetrix verify that ATS17501PSGATN-VDFUYJ is sourced from the original manufacturer or authorized distributors?
All ATS17501PSGATN-VDFUYJ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ATS17501PSGATN-VDFUYJ meets industry standards.
7.What is the process for return or replacement of ATS17501PSGATN-VDFUYJ?
All ATS17501PSGATN-VDFUYJ units undergo pre-shipment inspection (PSI). If there is an issue with ATS17501PSGATN-VDFUYJ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ATS17501PSGATN-VDFUYJ part is unused and in its original packaging.
Return procedure for ATS17501PSGATN-VDFUYJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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