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Allegro MicroSystems A19301LUBATN-RWPE
- Part No.:
- A19301LUBATN-RWPE
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 2-SIP Module
- Datasheet:
-
A19301LUBATN-RWPE.pdf
- Description:
- 2-WIRE ABS DIRECTION AND SPEED S
- Quantity:
- Payment:
- Shipping:
Inventory:2,100
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Product details
Overview
A19301LUBATN-RWPE from Allegro MicroSystems is an ASIL B-compliant Hall-effect wheel speed sensor IC in a 2-pin SIP (UB) package, delivering speed and direction output via two-wire current-loop signaling. It features SolidSpeed Digital Architecture for dynamic air gap compensation, integrated 2.2 nF ceramic capacitor for EMC robustness, and EEPROM-based traceability. Designed for automotive ABS systems, it supports forward/reverse rotation detection with pulse-width-encoded direction and operates from –40°C to +150°C.
For engineers reviewing the A19301LUBATN-RWPE datasheet, A19301LUBATN-RWPE pinout, A19301LUBATN-RWPE application, or A19301LUBATN-RWPE equivalent, this page provides verified technical context, pin-level design meaning, real-world automotive use cases, and validated alternative options aligned with ISO 26262 SEooC requirements.
Technical Context
The A19301LUBATN-RWPE implements a differential Hall-sensing architecture with three integrated Hall elements (E1–E3), enabling precise edge detection and direction resolution via dual-channel magnetic signal processing. Its digital controller executes real-time calibration at power-on and maintains stable operation under air gap variations up to ±0.5 mm.
It uses a two-wire current-output protocol where ICC(LOW) = 7 mA (typ) and ICC(HIGH) = 14 mA (typ), with pulse widths defined by variant suffix: -RWPE indicates reverse-polarity forward rotation (pin 2 → pin 1), 90 µs forward pulse width (tW(FWD)), and 180 µs reverse pulse width (tW(REV)). No ASIL protocol flag (-A) is present, confirming standard safety mode without active diagnostic reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 24 V - Enables direct connection to automotive battery rails with undervoltage lockout at 3.6 V. |
| Operating Temperature | –40°C to +150°C - Qualified for under-hood placement in ABS wheel-end modules. |
| Output Current Levels | ICC(LOW) = 7 mA (typ), ICC(HIGH) = 14 mA (typ) - Provides robust noise-immune current-loop signaling over long harness runs. |
| Forward Pulse Width | 90 µs (typ) - Encodes forward rotation (pin 2 → pin 1) per ISO 11452-2-compliant timing. |
| Reverse Pulse Width | 180 µs (typ) - Distinguishes reverse rotation unambiguously from forward pulses. |
| Differential Magnetic Input | ±700 G operating range, 20 G pk-pk minimum - Supports both ferrite ring magnets and neodymium back-biased ferrous targets. |
| Integrated Capacitor | 2.2 nF ceramic - Embedded in UB package to suppress EMI without external components. |
Pinout & Package
The A19301LUBATN-RWPE is housed in a lead-free, tin-plated 2-pin SIP (UB) package measuring 18.00 mm × 4.00 mm × 1.80 mm, with molded lead-stabilizing bar for mechanical robustness during shipping and SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VCC | Positive supply input - Accepts 4–24 V; includes internal Zener clamp (28 V) and UVLO (3.6 V). |
| Pin 2 | GND / Output Return | Current-sink return path - Output current flows from VCC through external load RL to this pin; defines polarity of rotation encoding. |
Key Features
| Feature | Design Value |
|---|---|
| SolidSpeed Digital Architecture | Real-time air gap compensation algorithm maintains pitch accuracy during suspension-induced target movement. |
| ASIL B SEooC Compliance | Hardware safety element developed per ISO 26262 Part 5/6; enables integration into ASIL B automotive safety chains when used per safety manual. |
| Integrated EEPROM | Enables device-level traceability across manufacturing, calibration, and field deployment lifecycles. |
| Two-Wire Current Loop | Eliminates need for separate signal ground; reduces wiring cost and improves EMC immunity in noisy chassis environments. |
| UB Package EMC Optimization | Overmolded SIP integrates IC and high-temp ceramic capacitor, achieving >40 dB common-mode rejection at 100 MHz. |
Applications
| Anti-lock Braking System (ABS) | Electronic Stability Control (ESC) |
|---|---|
Use Scenario: Mounted on vehicle wheel hub to monitor rotational speed and direction of each wheel during braking events. IC Role / Device Role / Timing Role: Primary wheel speed sensor providing real-time direction-aware pulse train to ABS ECU for slip ratio calculation. Use Value: Enables accurate wheel lock detection and directional torque intervention within <10 ms latency, critical for maintaining vehicle stability. | Use Scenario: Integrated into ESC module to detect unintended yaw or lateral skid during cornering or emergency maneuvers. IC Role / Device Role / Timing Role: Direction-sensitive speed input feeding yaw rate estimator and brake vectoring logic. Use Value: Supports sub-5° directional resolution at 0.5 Hz–3.9 kHz, allowing ESC to differentiate between understeer and oversteer conditions. |
| Traction Control System (TCS) | Advanced Driver Assistance Systems (ADAS) |
Use Scenario: Installed on driven axle to monitor wheel spin during acceleration on low-friction surfaces (ice, wet pavement). IC Role / Device Role / Timing Role: High-fidelity speed/direction feedback for torque reduction and differential braking actuation. Use Value: Delivers 90 µs forward / 180 µs reverse pulse discrimination enabling TCS to apply corrective action within 2 wheel revolutions. | Use Scenario: Used in ADAS domain controllers for vehicle motion modeling in automated lane keeping and adaptive cruise control. IC Role / Device Role / Timing Role: Redundant wheel speed source supporting sensor fusion with IMU and radar data. Use Value: EEPROM-traceable output ensures calibration consistency across vehicle lifetime, meeting ASIL B diagnostic coverage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect wheel speed sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A19301LUBATN-FWPE | Same UB package and core architecture; differs only in rotation polarity: forward rotation defined as pin 1 → pin 2 (vs. pin 2 → pin 1 in RWPE). | Requires mechanical reorientation of sensor mounting or target geometry to maintain consistent direction interpretation. | Select FWPE if target passes from pin 1 to pin 2 during forward motion; RWPE is optimal for opposite orientation. |
| ATS684LSB-T | Two-wire Hall sensor with 40 µs pulse width, no EEPROM, no ASIL B certification; operates to +165°C junction but lacks ISO 26262 documentation. | Not qualified for ASIL B safety chains; suitable only for non-safety-critical speed monitoring (e.g., dashboard tachometer). | Choose ATS684LSB-T only for cost-sensitive, non-automotive safety applications where traceability and functional safety are not required. |
Compared with A19301LUBATN-RWPE, the FWPE variant offers identical performance with reversed pin-defined rotation logic-requiring no PCB change but mechanical alignment adjustment-while the ATS684LSB-T lacks ASIL B compliance, EEPROM, and dynamic air gap compensation, limiting its use to non-safety domains.
Availability
A19301LUBATN-RWPE is available at Aetrix Electronics and suitable for automotive ABS, ESC, and TCS applications requiring stable component supply, full lifecycle traceability, and ASIL B hardware safety assurance.
Supply support for A19301LUBATN-RWPE 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 magnetic sensing and power IC solutions, specializing in automotive and industrial motion control.
The A19301 product line delivers ASIL-compliant, two-wire Hall-effect wheel speed sensors optimized for automotive safety-critical braking and stability systems, with emphasis on air gap resilience and production traceability.
FAQ
What does the "RWPE" suffix indicate in A19301LUBATN-RWPE?
The "RWPE" suffix in A19301LUBATN-RWPE specifies the configuration: R = reverse rotation polarity (forward rotation defined as target moving from pin 2 to pin 1), W = 90 µs forward pulse width, P = extended air gap and warning pulses enabled, and E = ferrite or neodymium magnet compatibility. This exact variant was removed from the latest selection guide (Rev. 4, Nov 2025) but remains orderable and fully supported per datasheet A19301-DS Rev. 4.
Does A19301LUBATN-RWPE require an external capacitor?
No, A19301LUBATN-RWPE does not require an external capacitor. It integrates a 2.2 nF high-temperature ceramic capacitor internally within the UB package, eliminating external components and enhancing EMC robustness for automotive wheel-speed applications.
Is A19301LUBATN-RWPE certified to ASIL B, and what does that mean for system integration?
Yes, A19301LUBATN-RWPE is developed as a hardware safety element out of context (SEooC) with ASIL B capability per ISO 26262. This means it can be integrated into ASIL B safety chains when used strictly per the safety manual and datasheet guidelines-including correct fault handling, diagnostic coverage, and environmental derating-but requires system-level validation to achieve full ASIL B compliance.
How does the SolidSpeed Digital Architecture in A19301LUBATN-RWPE improve performance over analog Hall sensors?
The SolidSpeed Digital Architecture in A19301LUBATN-RWPE implements adaptive thresholding and real-time calibration algorithms that dynamically compensate for air gap changes, temperature drift, and magnetic aging. Unlike fixed-threshold analog sensors, it maintains ±0.5° directional accuracy across ±0.5 mm air gap variation and –40°C to +150°C, directly improving ABS response reliability.
Can A19301LUBATN-RWPE be used with both ring magnets and ferrous gear targets?
Yes, A19301LUBATN-RWPE supports both ring magnets (direct sensing) and ferrous gear targets (back-biased with external magnet). Its differential Hall architecture and programmable magnetic temperature compensation (0.16%/°C for ferrite/neodymium) ensure stable operation across target types, with confirmed BDIFF(pk-pk) sensitivity down to 20 G and full-range operation up to ±700 G.
A19301LUBATN-RWPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 2-SIP Module
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- 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:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4V ~ 24V
- Mounting Type:
- Through Hole
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 2-UltraMini SIP
A19301LUBATN-RWPE FAQ
1.How can I place an order for A19301LUBATN-RWPE through Aetrix?
Please submit a Request for Quotation (RFQ) for A19301LUBATN-RWPE 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 A19301LUBATN-RWPE reliable?
The price and inventory of A19301LUBATN-RWPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A19301LUBATN-RWPE is usually 5 days.
3.What payment methods are accepted for A19301LUBATN-RWPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A19301LUBATN-RWPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A19301LUBATN-RWPE?
A19301LUBATN-RWPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A19301LUBATN-RWPE 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 A19301LUBATN-RWPE?
For technical support, including A19301LUBATN-RWPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A19301LUBATN-RWPE requirements.
6.How does Aetrix verify that A19301LUBATN-RWPE is sourced from the original manufacturer or authorized distributors?
All A19301LUBATN-RWPE 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 A19301LUBATN-RWPE meets industry standards.
7.What is the process for return or replacement of A19301LUBATN-RWPE?
All A19301LUBATN-RWPE units undergo pre-shipment inspection (PSI). If there is an issue with A19301LUBATN-RWPE, 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 A19301LUBATN-RWPE part is unused and in its original packaging.
Return procedure for A19301LUBATN-RWPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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