My Inquiry
My Account
Allegro MicroSystems ATS17501PSGATN-SDFUYK-A
- Part No.:
- ATS17501PSGATN-SDFUYK-A
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SSIP
- Datasheet:
-
ATS17501PSGATN-SDFUYK-A.pdf
- Description:
- EMOTOR DUAL OUTPUT DIFFERENTIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,468
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ATS17501PSGATN-SDFUYK-A 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-compensated signal processing, and ASIL B SEooC compliance per ISO 26262. 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 programmable fault-detection mode.
For engineers reviewing the ATS17501PSGATN-SDFUYK-A datasheet, ATS17501PSGATN-SDFUYK-A pinout, ATS17501PSGATN-SDFUYK-A application, or ATS17501PSGATN-SDFUYK-A equivalent, this page delivers verified technical context, calibrated switch-point behavior, differential channel timing accuracy, fault-detection voltage thresholds, and real-world air-gap performance data for gear-sensing designs requiring functional safety support.
Technical Context
The ATS17501PSGATN-SDFUYK-A implements two independent differential Hall channels spaced at 1.75 mm pitch, each feeding digital signal processing with dynamic/fixed/hybrid threshold algorithms. Its self-calibrating architecture tracks magnetic peak-to-peak amplitude (BDIFF(pk-pk)) and offset in real time, enabling robust operation across air gaps up to 3 mm with ferrous targets like Reference Target 60-0.
Digital outputs support multiple protocols: XOR speed + direction (–V), left/right pulse (–P), or dual-channel speed (–S), all configurable via EEPROM. Fault-detection mode enables three-level output states (VFAULT(HIGH)/MID/LOW) for open-wire, short-circuit, and internal diagnostic reporting - validated for ASIL B integration when used per the safety manual.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Switching Bandwidth | 40 kHz - supports high-speed motor shaft sensing up to ~240,000 RPM with 60-tooth gear |
| Operating Temperature | –40°C to +160°C - qualified for under-hood automotive and industrial motor environments |
| Air Gap Range | 0.75–3.0 mm - validated with Reference Target 60-0; fault-detection mode reduces upper limit to 2.75 mm |
| Output Protocols | Configurable via EEPROM: –S (dual speed), –V (XOR speed + direction), –W (XOR speed + inverse direction), –P (dual pulse) |
| Fault-Detection Levels | Three-state output: VFAULT(HIGH) ≥ 4.5 V (5 V pullup), VFAULT(MID) = 1.25–3.75 V, VFAULT(LOW) ≤ 0.5 V |
| Supply Voltage Range | 4–24 V - wide-input operation compatible with 5 V, 12 V, and 24 V automotive/industrial rails |
| Power-On Time | ≤1 ms - fast initialization critical for start-up monitoring in traction inverters and EPS systems |
Pinout & Package
The ATS17501PSGATN-SDFUYK-A 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 Input | 4–24 V DC input; includes undervoltage lockout (3.99 V threshold) and on-chip regulation |
| OUTA | Configurable Output A | Programmable as left-channel speed, XOR speed, or left-channel pulse; supports fault-detection state transitions |
| OUTB | Configurable Output B | Programmable as right-channel speed, direction, or right-channel pulse; independently controllable with OUTA |
| GND | Ground Reference | Common return for supply, outputs, and internal analog/digital circuits; requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Dual Differential Hall Channels | Two independent analog front-ends with 1.75 mm pitch enable precise phase-based direction detection and vibration-immune speed calculation |
| Dynamic/Fixed/Hybrid Threshold Algorithms | Self-adapting switch-point calibration eliminates need for external tuning; fixed threshold enables immediate post-power-on accuracy |
| ASIL B SEooC Certification | Developed per ISO 26262 for use in safety-related systems (e.g., EPS, transmission control) when integrated per safety manual guidance |
| EEPROM-Based Programmability | Factory-programmable output protocol, threshold type, pullup configuration, and fault-detection mode - enables one-device-fits-many applications |
| Vibration-Robust Signal Tracking | Prevents false transitions during startup and low-speed vibration by inhibiting peak bounding during detected direction changes |
Applications
| Electric Power Steering (EPS) | Automotive Transmission Speed Sensing |
|---|---|
Use Scenario: Real-time measurement of steering column or rack-and-pinion rotational speed and direction during active assist. IC Role / Device Role / Timing Role: Dual-output differential sensor providing XOR speed and direction signals to EPS ECU for torque-vectoring and assist mapping. Use Value: Enables <1 ms power-on response and vibration-immune operation at <100 RPM, meeting ASIL B requirements for driver assistance functions. | Use Scenario: Monitoring input/output shaft speed and direction in automatic or dual-clutch transmissions for gear selection and clutch control. IC Role / Device Role / Timing Role: High-resolution gear tooth counting with direction awareness using –V output protocol to distinguish forward/reverse gear engagement. Use Value: Supports air gaps up to 2.75 mm with fault-detection mode enabled, reducing mechanical tolerance sensitivity in compact transmission housings. |
| Industrial Motor Feedback | Electric Traction Inverter Monitoring |
Use Scenario: Closed-loop speed control of AC induction or PMSM motors in HVAC blowers, pumps, and compressors. IC Role / Device Role / Timing Role: Dual-channel speed output (–S protocol) feeds motor controller for precise slip compensation and field-oriented control. Use Value: Delivers stable switching up to 40 kHz across –40°C to +160°C, eliminating thermal drift-induced errors in uncooled motor enclosures. | Use Scenario: Rotor position and speed feedback for IGBT gate drive timing in battery-electric vehicle traction inverters. IC Role / Device Role / Timing Role: Fault-detecting sensor providing validated speed data and open-wire/short-circuit alerts to inverter safety monitor unit. Use Value: Three-level fault signaling (VFAULT HIGH/MID/LOW) enables SIL2-compliant diagnostics without external comparators or ADCs. |
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 |
|---|---|---|---|
| ATS17501PSGATN-SDFUYJ | Same die and SG package; differs only in tape-and-reel packing (800 pcs/reel vs. 1000 pcs/reel for -SDFUYK-A) | No functional or electrical difference; identical performance, calibration, and safety qualification | Select when standard reel quantity aligns with production batch sizing and SMT line feed requirements |
| A17501LQBTN-TFUYJ | Same core IC but in 4-pin SIP *without* integrated magnet; requires external back-biasing magnet and separate mounting | Suitable where magnetic field tuning or custom flux concentration is needed; lacks factory-matched magnet calibration | Choose for non-standard target geometries or when thermal expansion mismatch between magnet and IC must be decoupled |
Compared with ATS17501PSGATN-SDFUYK-A, the -SDFUYJ variant offers identical sensing performance with different packaging logistics, while the A17501LQBTN-TFUYJ provides design flexibility at the cost of added assembly complexity and loss of factory-optimized magnetic coupling.
Availability
ATS17501PSGATN-SDFUYK-A is available at Aetrix Electronics and suitable for automotive EPS systems, industrial motor feedback loops, and electric traction inverter monitoring requiring stable component supply, ASIL B safety compliance, and high-temperature reliability.
Supply support for ATS17501PSGATN-SDFUYK-A 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 designer and manufacturer of high-performance Hall-effect sensors, motor drivers, and power ICs, specializing in magnetic sensing and motion control solutions.
The ATS17501 product line delivers differential gear-tooth sensing ICs engineered for functional safety-critical automotive and industrial motor applications, with emphasis on vibration immunity, wide air-gap operation, and ISO 26262-compliant hardware architecture.
FAQ
What is the primary sensing function of the ATS17501PSGATN-SDFUYK-A?
The ATS17501PSGATN-SDFUYK-A is a dual-output differential Hall-effect sensor IC that measures rotational speed and direction of ferrous gear targets. It uses two independent differential channels derived from three Hall elements to generate precise, vibration-resistant speed and direction signals - not a simple on/off switch or single-channel tachometer. Its core function is high-fidelity gear tooth profiling for closed-loop motor control and safety-critical feedback.
Does the ATS17501PSGATN-SDFUYK-A require an external magnet?
No, the ATS17501PSGATN-SDFUYK-A does not require an external magnet. It is packaged in the SG variant, which integrates a rare-earth magnetic pellet and flat ferrous pole piece directly into the 4-pin SIP package. This factory-matched magnet ensures consistent air-gap performance, eliminates assembly variability, and maintains calibration stability over temperature - a key differentiator from magnetless variants like the A17501.
How does fault-detection mode work on the ATS17501PSGATN-SDFUYK-A?
Fault-detection mode on the ATS17501PSGATN-SDFUYK-A configures OUTA and OUTB to operate in a three-state output regime: VFAULT(HIGH), VFAULT(MID), or VFAULT(LOW). When enabled, outputs transition between ~20% and ~80% of VPULLUP during normal operation, allowing dedicated voltage bands to indicate open-circuit, short-to-ground, or internal diagnostic faults - all validated for ASIL B system integration per ISO 26262 requirements.
What output protocols are supported by the ATS17501PSGATN-SDFUYK-A?
The ATS17501PSGATN-SDFUYK-A supports four EEPROM-programmable output protocols: –S (left/right channel speed), –V (XOR speed + direction), –W (XOR speed + inverse direction), and –P (left/right channel pulse). Protocol selection determines signal content, timing relationships, and fault-detection compatibility - for example, –V and –W support direction data, while –S and –P do not. All protocols are mutually exclusive and factory-configurable.
Is the ATS17501PSGATN-SDFUYK-A qualified for automotive under-hood use?
Yes, the ATS17501PSGATN-SDFUYK-A is qualified for automotive under-hood use. It operates across –40°C to +160°C ambient temperature, features integrated reverse-voltage and overvoltage protection, and is developed as an ASIL B hardware safety element out of context (SEooC) per ISO 26262. Its SG package with 100% matte-tin plating and robust EMC design supports deployment in engine compartments, transmission housings, and EPS modules.
ATS17501PSGATN-SDFUYK-A 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-SDFUYK-A FAQ
1.How can I place an order for ATS17501PSGATN-SDFUYK-A through Aetrix?
Please submit a Request for Quotation (RFQ) for ATS17501PSGATN-SDFUYK-A 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-SDFUYK-A reliable?
The price and inventory of ATS17501PSGATN-SDFUYK-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATS17501PSGATN-SDFUYK-A is usually 5 days.
3.What payment methods are accepted for ATS17501PSGATN-SDFUYK-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATS17501PSGATN-SDFUYK-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATS17501PSGATN-SDFUYK-A?
ATS17501PSGATN-SDFUYK-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATS17501PSGATN-SDFUYK-A 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-SDFUYK-A?
For technical support, including ATS17501PSGATN-SDFUYK-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATS17501PSGATN-SDFUYK-A requirements.
6.How does Aetrix verify that ATS17501PSGATN-SDFUYK-A is sourced from the original manufacturer or authorized distributors?
All ATS17501PSGATN-SDFUYK-A 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-SDFUYK-A meets industry standards.
7.What is the process for return or replacement of ATS17501PSGATN-SDFUYK-A?
All ATS17501PSGATN-SDFUYK-A units undergo pre-shipment inspection (PSI). If there is an issue with ATS17501PSGATN-SDFUYK-A, 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-SDFUYK-A part is unused and in its original packaging.
Return procedure for ATS17501PSGATN-SDFUYK-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ATS17501PSGATN-SDFUYK-A Tags
-
TLV493DA1B6HTSA2
Infineon Technologies
-
EVW-AE4001B14
Panasonic Electronic Components
-
3382G-1-103G
Bourns Inc.
-
TLE5501E0001XUMA1
Infineon Technologies
-
HAL830UT-A
TDK-Micronas GmbH
-
TLE5009E1000FUMA1
Infineon Technologies
-
TLE5501E0002XUMA1
Infineon Technologies
-
HAL3725DJ-A
TDK-Micronas GmbH
-
HAL3727DJ-A
TDK-Micronas GmbH
-
HMC1501-TR
Honeywell Aerospace
-
HMC1512-TR
Honeywell Aerospace
-
AAS33001LLEATR-5
Allegro MicroSystems
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
