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Allegro MicroSystems ATS17501PSGATN-WDFUYJ
- Part No.:
- ATS17501PSGATN-WDFUYJ
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SSIP
- Datasheet:
-
ATS17501PSGATN-WDFUYJ.pdf
- Description:
- EMOTOR DUAL OUTPUT DIFFERENTIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
ATS17501PSGATN-WDFUYJ from Allegro MicroSystems is a dual-output differential Hall-effect rotational position and speed sensor IC 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–compliant fault-detection mode. Key confirmed parameters: 40 kHz max switching bandwidth, –40°C to +160°C operating temperature, 4-pin SIP (SG) package with integrated back-biasing magnet, and dual configurable outputs (OUTA/OUTB) supporting XOR speed + direction protocol.
For engineers reviewing the ATS17501PSGATN-WDFUYJ datasheet, ATS17501PSGATN-WDFUYJ pinout, ATS17501PSGATN-WDFUYJ application, or ATS17501PSGATN-WDFUYJ equivalent, this page delivers verified technical context, calibrated switch-point behavior across air gap and temperature, differential channel immunity to target vibration, fault-detection voltage-level signaling (VFAULT(HIGH)/MID/LOW), and programming options for dynamic/fixed/hybrid threshold algorithms - all critical for safety-critical motor control and ABS/ESP subsystem design.
Technical Context
The ATS17501PSGATN-WDFUYJ implements two independent differential Hall channels spaced at 1.75 mm pitch, each digitized via full-range ADC and processed by digital tracking logic to eliminate magnetic offset drift and suppress false transitions during motor startup and low-speed vibration. Its self-calibrating architecture dynamically updates operate (BOP = 70% of BDIFF(pk-pk)) and release (BRP = 30%) thresholds using prior peak data or factory-programmed fixed thresholds with temperature compensation.
Digital output behavior is fully configurable: output protocols include left/right speed (S), XOR speed + direction (V/W), or pulse/pulse-inverted (P); threshold modes include dynamic (D), fixed (Q), or hybrid (H); and fault-detection mode enables three-level VFAULT signaling (HIGH/MID/LOW) for open-wire, short-to-ground, or internal diagnostic faults - all validated per ISO 26262 SEooC ASIL B requirements when used per safety manual guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Switching Bandwidth | 40 kHz - supports high-speed crankshaft/camshaft sensing up to 240,000 RPM with 60-tooth target |
| Operating Temperature | –40°C to +160°C - qualified for under-hood automotive and industrial motor environments |
| Air Gap Range | 0.75–2.75 mm (fault-detection enabled) - enables robust mechanical tolerance in gear-sensing assemblies |
| Output Configuration | Dual CMOS-compatible outputs (OUTA/OUTB) - supports XOR speed + direction, dual-channel speed, or pulse protocols |
| Fault-Detection Levels | VFAULT(HIGH), VFAULT(MID), VFAULT(LOW) - provides unambiguous open-circuit, short-to-ground, and internal fault identification |
| Supply Voltage Range | 4–24 V - compatible with 5 V, 12 V, and 24 V automotive and industrial power rails |
| Calibration Method | Dynamic, fixed, or hybrid threshold algorithm - ensures accurate switch points despite magnetic offset drift or amplitude variation |
Pinout & Package
The ATS17501PSGATN-WDFUYJ is housed in a lead-free 4-pin single inline package (SIP) with integrated rare-earth back-biasing magnet and 100% matte-tin-plated lead frame. The SG package is optimized for surface-mount assembly and consistent magnetic coupling over temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Voltage Input | 4–24 V DC input; includes undervoltage lockout (VCC(UV) = 3.99 V) and on-chip regulation |
| OUTA | Configurable Output A | Programmable as left-channel speed, XOR speed, or left-channel pulse - supports fault-detection voltage levels |
| OUTB | Configurable Output B | Programmable as right-channel speed, direction, inverse direction, or right-channel pulse - independently configurable with OUTA |
| GND | Ground Reference | Common return path for supply and outputs; required for stable differential Hall sensing and EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Dual Differential Hall Channels | Two independent signal paths with 1.75 mm element pitch enable precise phase-based direction detection and vibration-robust speed calculation |
| Self-Calibrating Threshold Algorithms | Dynamic, fixed, or hybrid threshold selection eliminates need for external calibration components and maintains accuracy across air gap, temperature, and target wear |
| ASIL B SEooC Compliance | Developed per ISO 26262 for use in safety-related systems (e.g., EPS, transmission control) when integrated per safety manual guidance |
| Integrated Fault-Detection Mode | Three-level output voltage signaling (VFAULT) enables real-time diagnostics for open-circuit, short-to-ground, and internal functional faults without external circuitry |
| EEPROM Traceability | Factory-programmed unique identifiers stored in on-chip EEPROM support full lifecycle traceability and end-of-line calibration verification |
Applications
| Electric Power Steering (EPS) | Anti-lock Braking System (ABS) |
|---|---|
Use Scenario: Real-time steering angle and torque estimation using dual-channel speed and direction signals from a motor rotor gear. IC Role / Device Role / Timing Role: ATS17501PSGATN-WDFUYJ provides vibration-immune, direction-resolved speed data to the EPS ECU for precise motor current control and assist mapping. Use Value: Dynamic threshold algorithm maintains accurate zero-speed detection and direction reversal during parking maneuvers, eliminating false torque spikes caused by gear backlash or motor cogging. | Use Scenario: Wheel speed monitoring on each axle using ferrous tone rings mounted to brake rotors or CV joints. IC Role / Device Role / Timing Role: ATS17501PSGATN-WDFUYJ delivers dual-output speed and direction data to the ABS controller for wheel slip detection and hydraulic valve actuation timing. Use Value: Fault-detection mode enables immediate identification of open-circuit or short-to-ground faults on either output line, satisfying ASIL B diagnostic coverage requirements for brake system integrity. |
| Industrial Motor Feedback | Automotive Transmission Control |
Use Scenario: Closed-loop speed and direction feedback for servo-driven conveyor systems and CNC spindle motors. IC Role / Device Role / Timing Role: ATS17501PSGATN-WDFUYJ serves as a compact, magnet-integrated replacement for optical encoders in harsh, oil-contaminated environments. Use Value: Integrated back-biasing magnet and wide air-gap tolerance (up to 2.75 mm) reduce mechanical alignment sensitivity and eliminate separate magnet assembly steps during motor integration. | Use Scenario: Input shaft and output shaft speed sensing in automatic transmissions to determine gear ratio and detect clutch slippage. IC Role / Device Role / Timing Role: ATS17501PSGATN-WDFUYJ provides synchronized dual-channel data enabling real-time torque converter lock-up control and shift quality optimization. Use Value: Hybrid threshold algorithm ensures reliable operation during rapid acceleration/deceleration transients while maintaining accuracy over the full –40°C to +160°C temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rotational position and speed sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A17501PSGATN-WDFUYJ | No integrated magnet; requires external magnet assembly and tighter air-gap control (0.75–2.0 mm) | Suitable for applications where magnetic field strength must be tuned or where thermal expansion mismatch between IC and magnet must be minimized | Select A17501PSGATN-WDFUYJ only if magnet placement flexibility or custom flux shaping is required; otherwise ATS17501PSGATN-WDFUYJ offers superior manufacturability and temperature stability |
| ATS605LSGTN-T | Single-output, non-ASIL, fixed-threshold-only; no fault-detection mode or EEPROM; 3-pin SIP package | Targeted at cost-sensitive, non-safety-critical applications such as HVAC blower motors or basic pump control | ATS605LSGTN-T lacks dual outputs, ASIL compliance, and programmable protocols - not suitable for EPS, ABS, or transmission control where direction and fault reporting are mandatory |
Compared with A17501PSGATN-WDFUYJ and ATS605LSGTN-T, the ATS17501PSGATN-WDFUYJ uniquely combines integrated magnet, dual differential outputs, ASIL B SEooC compliance, and three-level fault-detection signaling - making it the only option qualified for safety-critical automotive motor control where both direction resolution and diagnostic coverage are required.
Availability
ATS17501PSGATN-WDFUYJ is available at Aetrix Electronics and suitable for automotive electric power steering (EPS), anti-lock braking systems (ABS), industrial servo motor feedback, and automatic transmission control requiring stable component supply, long-term lifecycle support, and ASIL-compliant sourcing.
Supply support for ATS17501PSGATN-WDFUYJ 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 magnetic sensing and power ICs for automotive and industrial motion control.
The ATS17501 product line was developed specifically for robust, safety-compliant rotational sensing in electric-motor-driven systems - emphasizing vibration immunity, wide air-gap tolerance, and integrated diagnostics for EPS, ABS, and transmission applications.
FAQ
What output protocols does the ATS17501PSGATN-WDFUYJ support?
The ATS17501PSGATN-WDFUYJ supports multiple programmable output protocols including S (left/right speed), V (XOR speed + direction), W (XOR speed + inverse direction), and P (left/right pulse). Protocol selection is configured via EEPROM programming during manufacturing or end-of-line calibration. Each protocol determines how OUTA and OUTB encode speed and directional information, with V and W modes enabling explicit rotation direction reporting required for EPS and transmission control systems. The ATS17501PSGATN-WDFUYJ datasheet defines electrical timing and voltage levels for each mode.
How does the ATS17501PSGATN-WDFUYJ handle target vibration during motor startup?
The ATS17501PSGATN-WDFUYJ uses vibration-robust signal tracking that prevents inward bounding of peak-tracking algorithms during direction changes, eliminating false output transitions caused by gear vibration at low speeds. Its dual differential channels and dynamic threshold algorithm continuously adapt switch points based on prior magnetic peaks, ensuring accurate speed and direction detection even during startup oscillations. Startup hysteresis further rejects noise until sufficient target motion is detected. This behavior is validated across the full –40°C to +160°C range and is integral to the ATS17501PSGATN-WDFUYJ's ASIL B qualification.
What is the role of EEPROM in the ATS17501PSGATN-WDFUYJ?
The on-chip EEPROM in the ATS17501PSGATN-WDFUYJ stores factory-programmed identifiers for full lifecycle traceability, threshold calibration data for fixed/hybrid algorithms, and configuration settings for output protocol, threshold mode, and fault-detection enablement. It enables end-of-line calibration to update thresholds based on actual mechanical installation, and retains these values across power cycles. EEPROM usage is essential for meeting ISO 26262 ASIL B requirements for data integrity and diagnostic coverage, and is a key differentiator of the ATS17501PSGATN-WDFUYJ versus non-EEPROM alternatives.
Can the ATS17501PSGATN-WDFUYJ operate without an external pull-up resistor?
No - the ATS17501PSGATN-WDFUYJ requires external pull-up resistors on both OUTA and OUTB pins for functional operation. Recommended values are 1 kΩ for 5 V VPULLUP and 0.9–1.1 kΩ for 12 V VPULLUP when fault-detection mode is enabled. Pull-up voltage must be within specified ranges: 4.75–5.25 V (5 V option) or 11.4–12.6 V (12 V option) when fault-detection is active; 4–24 V when disabled. Omitting pull-ups will prevent valid logic-level transitions and violate the ATS17501PSGATN-WDFUYJ's output stage specifications.
What is the maximum allowable air gap for the ATS17501PSGATN-WDFUYJ with fault-detection mode enabled?
With fault-detection mode enabled, the ATS17501PSGATN-WDFUYJ supports an operating air gap of 0.75–2.75 mm when used with the Allegro reference target 60-0 at frequencies below 10 kHz and with the dynamic threshold (-D) algorithm selected. This range assumes standard low-carbon steel target material, 120 mm diameter, and 6 mm tooth face width. Air gap performance is target-dependent; actual usable gap must be validated per application using the ATS17501PSGATN-WDFUYJ's BDIFF(pk-pk) specification (0.6–2×) and TWINDOW constraint (8 TCYCLE).
ATS17501PSGATN-WDFUYJ 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-WDFUYJ FAQ
1.How can I place an order for ATS17501PSGATN-WDFUYJ through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS17501PSGATN-WDFUYJ 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-WDFUYJ reliable?
The price and inventory of ATS17501PSGATN-WDFUYJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS17501PSGATN-WDFUYJ is usually 5 days.
3.What payment methods are accepted for ATS17501PSGATN-WDFUYJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS17501PSGATN-WDFUYJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS17501PSGATN-WDFUYJ?
ATS17501PSGATN-WDFUYJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS17501PSGATN-WDFUYJ 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-WDFUYJ?
For technical support, including ATS17501PSGATN-WDFUYJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS17501PSGATN-WDFUYJ requirements.
6.How does Aetrix verify that ATS17501PSGATN-WDFUYJ is sourced from the original manufacturer or authorized distributors?
All ATS17501PSGATN-WDFUYJ 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-WDFUYJ meets industry standards.
7.What is the process for return or replacement of ATS17501PSGATN-WDFUYJ?
All ATS17501PSGATN-WDFUYJ units undergo pre-shipment inspection (PSI). If there is an issue with ATS17501PSGATN-WDFUYJ, 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-WDFUYJ part is unused and in its original packaging.
Return procedure for ATS17501PSGATN-WDFUYJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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