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Allegro MicroSystems A19302PUBATN-RPE-A
- Part No.:
- A19302PUBATN-RPE-A
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 2-SIP Module
- Datasheet:
-
A19302PUBATN-RPE-A.pdf
- Description:
- 2-WIRE ABS DIRECTION AND SPEED S
- Quantity:
- Payment:
- Shipping:
Inventory:2,071
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Product details
Overview
A19302PUBATN-RPE-A from Allegro MicroSystems is a Hall-effect wheel speed and direction sensor IC with PW protocol, 2-pin SIP UB package, integrated 2.2 nF capacitor, ASIL B safety compliance per ISO 26262, and operating temperature range of –40 °C to +160 °C - designed for automotive ABS and ESC systems requiring robust magnetic sensing under dynamic air gap and thermal stress.
For engineers reviewing the A19302PUBATN-RPE-A datasheet, A19302PUBATN-RPE-A pinout, A19302PUBATN-RPE-A application, or A19302PUBATN-RPE-A equivalent, key selection considerations include its R-configuration (pin 2-to-pin 1 forward rotation), PW protocol with warning/standstill pulses enabled, ferrite or neodymium magnet compatibility, and integrated EEPROM for lifecycle traceability.
Technical Context
The A19302PUBATN-RPE-A implements a SolidSpeed Digital Architecture with three Hall elements arranged in differential pairs (E1–E2, E2–E3) to extract precise edge timing and rotational direction from ring magnets or back-biased ferromagnetic targets. Its digital controller dynamically sets switch points (BOP = 60%, BRP = 40% of peak-to-peak signal) and compensates for magnetic temperature drift (0.16%/°C for ferrite/neodymium).
This variant uses the PW protocol with R-orientation (forward rotation defined as target motion from pin 2 to pin 1), supports extended air gap (BEA = 84 Gpk-pk) and warning level (BWARN = 24 Gpk-pk), and delivers pulse widths of tW(FWD) = 90 µs (typ), tW(REV) = 180 µs (typ), and tW(STILL) = 1440 µs (typ) - all validated over 0–2.4 kHz reverse and 0–3.9 kHz forward frequency ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4–24 V for -xBx/-xPx variants; enables operation across automotive battery transients without external regulation |
| Operating Temperature | –40 °C to +160 °C ambient; supports placement near wheel hubs and powertrain components |
| Differential Magnetic Range | ±700 G; accommodates wide air gaps and mechanical tolerances in production assemblies |
| Output Current States | ICC(LOW) = 7 mA, ICC(MID) = 14 mA, ICC(HIGH) = 28 mA; enables three-level PWM encoding for speed, direction, and status |
| Integrated Capacitor | 2.2 nF ceramic capacitor co-molded in package; eliminates external decoupling and improves EMC robustness |
| ASIL Safety Current | IFAULT = 3.5 mA (typ); triggers fault-safe output state upon internal defect detection per ISO 26262 SEooC requirements |
| Protocol Type | PW protocol with R-orientation, warning pulses, standstill pulses, and extended air gap pulses; provides full diagnostic coverage for functional safety systems |
Pinout & Package
The A19302PUBATN-RPE-A is housed in a lead-free, tin-plated 2-pin SIP (Single In-line Package) designated UB, featuring an overmolded construction with molded lead-stabilizing bar for shipping integrity and automated assembly reliability. Package dimensions are 18.00 ± 0.10 mm length × 4.00 ± 0.06 mm width × 1.80 ± 0.10 mm height (ref Figure 16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Voltage | Pin 1 accepts 4–24 V input; includes internal Zener clamp (28 V) and UVLO hysteresis for stable startup |
| GND | Ground | Pin 2 serves as return path; output current transitions (ICC(LOW)/ICC(MID)/ICC(HIGH)) referenced to this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Hall-based differential sensing | Three-element architecture (E1/E2/E3) rejects common-mode noise and enables accurate direction detection even under vibration |
| SolidSpeed Digital Architecture | Real-time adaptive thresholding maintains <40% signal variation within 4×TCYCLE window, ensuring reliable edge detection during air gap disturbances |
| Integrated EEPROM | Enables permanent device serialization and calibration data storage for end-of-line testing and field traceability |
| ASIL B SEooC compliance | Hardware safety element developed per ISO 26262 Part 5; supports integration into ASIL B automotive safety chains when used per safety manual |
| UB package EMC enhancement | Co-molded high-temp ceramic capacitor reduces radiated emissions and eliminates PCB layout sensitivity to supply filtering |
Applications
| ABS Wheel Speed Sensing | ESC Vehicle Dynamics Monitoring |
|---|---|
Use Scenario: Mounted on vehicle wheel hub to detect rotational speed and direction of steel tone rings under braking, acceleration, and cornering. IC Role / Device Role / Timing Role: Primary wheel speed sensor providing real-time pulse-width encoded speed and direction to ABS ECU via two-wire interface. Use Value: Enables precise wheel lock detection and individual wheel torque control using tW(FWD)/tW(REV) differentiation and standstill pulse validation at 0 rpm. | Use Scenario: Integrated into electronic stability control modules to monitor yaw rate, lateral acceleration, and individual wheel slip during evasive maneuvers. IC Role / Device Role / Timing Role: Direction-aware speed input feeding yaw estimation algorithms; ASIL B fault signaling ensures safe degradation during internal failure. Use Value: Supports ESC system-level ASIL B compliance through IFAULT-triggered safe state and EEPROM-traceable calibration history. |
| Electric Power Steering Position Feedback | Transmission Input Shaft Monitoring |
Use Scenario: Installed on EPS motor or steering column to sense assist motor rotation and detect reversal during parking maneuvers. IC Role / Device Role / Timing Role: Bidirectional speed sensor delivering immediate direction change response (<1 ms latency) and vibration-tolerant output during gear engagement. Use Value: Eliminates need for separate direction sensors by resolving forward/reverse rotation from single-channel PW output with tW(FWD) vs tW(REV) discrimination. | Use Scenario: Mounted on automatic transmission input shaft to monitor turbine speed and detect clutch engagement/disengagement events. IC Role / Device Role / Timing Role: High-accuracy speed and direction sensor interfacing directly to transmission control unit via two-wire bus. Use Value: Extended air gap capability (BEA = 84 Gpk-pk) allows relaxed mechanical tolerances in high-vibration transmission environments without signal loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect wheel speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A19302PUBATN-FPE-A | Same UB package and PW protocol, but F-orientation (forward = pin 1 to pin 2); identical electrical specs and temperature rating | Requires reversed mechanical mounting orientation relative to target motion direction | Select when target rotation direction aligns with pin 1 → pin 2 motion path |
| ATS6849LSGT-T | Two-wire Hall sensor with AK protocol only; no PW mode; different pinout (3-pin SOT-23W); lacks integrated capacitor and EEPROM | Requires external decoupling and separate traceability solution; limited to AK-based ECUs | Choose only if system mandates AK protocol and board space permits discrete capacitor placement |
Compared with A19302PUBATN-RPE-A, the FPE-A variant offers identical performance with inverted rotation mapping, while the ATS6849LSGT-T sacrifices integration (no capacitor/EEPROM) and protocol flexibility (AK-only) to fit smaller packages - making the A19302PUBATN-RPE-A optimal for new ASIL B designs prioritizing EMC robustness and diagnostic completeness.
Availability
A19302PUBATN-RPE-A is available at Aetrix Electronics and suitable for automotive ABS, ESC, EPS, and transmission control applications requiring stable component supply, long-term lifecycle support, and ASIL-compliant sourcing.
Supply support for A19302PUBATN-RPE-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 magnetic sensing and power ICs, headquartered in Manchester, NH, with global manufacturing and support infrastructure.
The A19302 product line delivers ASIL B-compliant, integrated Hall-effect wheel speed sensors optimized for harsh automotive environments - emphasizing magnetic accuracy, EMC resilience, and functional safety readiness from silicon to package.
FAQ
What does the "R" in A19302PUBATN-RPE-A signify?
The "R" denotes the rotation orientation configuration: forward rotation is defined as target motion from pin 2 to pin 1. This determines how the A19302PUBATN-RPE-A interprets and encodes direction in its PW protocol output pulses. Mechanical mounting must align with this orientation to ensure correct forward/reverse pulse assignment - misalignment results in inverted direction reporting without hardware modification.
Does A19302PUBATN-RPE-A support both PW and AK protocols simultaneously?
No. The A19302PUBATN-RPE-A is factory-configured exclusively for PW protocol with extended air gap and warning pulses enabled (suffix "P"). It does not support AK protocol operation. Protocol selection is fixed at manufacture; AK functionality requires an "A"-suffixed variant (e.g., A19302PUBATN-RAE-A). Attempting AK communication with A19302PUBATN-RPE-A yields undefined output behavior.
How is the integrated capacitor in A19302PUBATN-RPE-A utilized in circuit design?
The 2.2 nF ceramic capacitor is internally connected between VCC (pin 1) and GND (pin 2), eliminating the need for external decoupling. This co-molded design ensures consistent EMC performance across production units and removes PCB layout dependencies. No external capacitor should be added - doing so may destabilize the internal regulator and violate the specified supply impedance profile defined in the A19302PUBATN-RPE-A datasheet.
What safety documentation accompanies A19302PUBATN-RPE-A for ISO 26262 compliance?
A19302PUBATN-RPE-A is delivered with a certified Hardware Safety Manual (HSM) and FMEDA report confirming its status as an ASIL B hardware safety element out-of-context (SEooC). These documents specify required integration constraints, diagnostic coverage thresholds, fault reaction times, and safe state behavior - all validated per ISO 26262 Part 5. The A19302PUBATN-RPE-A itself does not perform software-level safety checks; compliance depends on correct implementation per the safety manual.
Can A19302PUBATN-RPE-A operate with samarium-cobalt magnets?
No. The A19302PUBATN-RPE-A is configured for ferrite or neodymium magnets (suffix "E"), with a magnetic temperature coefficient of 0.16%/°C. Samarium-cobalt compatibility requires the "G" suffix variant (e.g., A19302PUBATN-RPG-A), which features a reduced 0.04%/°C coefficient. Using A19302PUBATN-RPE-A with samarium-cobalt magnets causes uncorrected thermal drift in air gap margin and may trigger false warning or extended air gap pulses outside specification.
A19302PUBATN-RPE-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Package/Case:
- 2-SIP Module
- 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:
- -
- 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:
- 2-UltraMini SIP
A19302PUBATN-RPE-A FAQ
1.How can I place an order for A19302PUBATN-RPE-A through Aetrix?
Please submit a Request for Quotation (RFQ) for A19302PUBATN-RPE-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 A19302PUBATN-RPE-A reliable?
The price and inventory of A19302PUBATN-RPE-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A19302PUBATN-RPE-A is usually 5 days.
3.What payment methods are accepted for A19302PUBATN-RPE-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A19302PUBATN-RPE-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A19302PUBATN-RPE-A?
A19302PUBATN-RPE-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A19302PUBATN-RPE-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 A19302PUBATN-RPE-A?
For technical support, including A19302PUBATN-RPE-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A19302PUBATN-RPE-A requirements.
6.How does Aetrix verify that A19302PUBATN-RPE-A is sourced from the original manufacturer or authorized distributors?
All A19302PUBATN-RPE-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 A19302PUBATN-RPE-A meets industry standards.
7.What is the process for return or replacement of A19302PUBATN-RPE-A?
All A19302PUBATN-RPE-A units undergo pre-shipment inspection (PSI). If there is an issue with A19302PUBATN-RPE-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 A19302PUBATN-RPE-A part is unused and in its original packaging.
Return procedure for A19302PUBATN-RPE-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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