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Allegro MicroSystems A19302PUBATN-RPE
- Part No.:
- A19302PUBATN-RPE
- Manufacturer:
- Allegro MicroSystems
- Category:
- Angle, Linear Position Measuring
- Package:
- 2-SIP Module
- Datasheet:
-
A19302PUBATN-RPE.pdf
- Description:
- 2-WIRE ABS DIRECTION AND SPEED S
- Quantity:
- Payment:
- Shipping:
Inventory:2,846
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Product details
Overview
A19302PUBATN-RPE from Allegro MicroSystems is a Hall-effect wheel speed and direction sensor IC with AK protocol two-wire interface, designed for automotive ABS and ESC systems. It delivers high-accuracy rotational speed measurement (0–2.5 kHz), direction detection, and ASIL B safety compliance per ISO 26262. Its integrated 2.2 nF ceramic capacitor and overmolded 2-pin SIP UB package enable robust EMC performance in harsh under-hood environments.
For engineers reviewing the A19302PUBATN-RPE datasheet, A19302PUBATN-RPE pinout, A19302PUBATN-RPE application, or A19302PUBATN-RPE equivalent, this page provides verified technical context, functional block-level design meaning, real-world automotive use cases, and validated alternative options for wheel speed sensing in safety-critical vehicle systems.
Technical Context
The A19302PUBATN-RPE implements a SolidSpeed Digital Architecture with three integrated Hall elements arranged in differential pairs (E1–E2, E2–E3) to extract precise edge timing and phase relationship for direction resolution. It supports AK protocol output with 10-pulse words containing speed pulse, 8 data bits (air gap, temperature, direction validity, rotation direction), and parity - all generated without external components.
Its internal EEPROM enables full device traceability across lifecycle stages, while ASIL B hardware safety element out-of-context (SEooC) implementation includes continuous diagnostic monitoring of internal faults and guaranteed safe-state output (5 ms fault pulse) upon detection. The -RPE suffix denotes reverse-rotation polarity (pin 2 → pin 1), AK protocol, ferrite/neodymium magnet support, and ASIL protocol enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.2–24 V: Supports wide automotive battery range including cold-crank transients; UVLO hysteresis 1.1 V ensures clean startup. |
| Operating Frequency | 0–2.5 kHz: Covers full wheel speed range up to ~250 km/h at standard 48-tooth gear; valid for AK protocol mode. |
| Differential Magnetic Input | ±700 G: Enables reliable operation with ring magnets or ferromagnetic targets across air gaps up to 2.5 mm. |
| Output Protocol | AK protocol: 10-pulse word with embedded direction bit (DR), air gap reserve (LR), overtemperature (OT), and parity - no host controller decoding logic required. |
| Junction Temp Limit | 175 °C: Rated for under-hood placement near brake calipers or transmissions; thermal resistance RθJA = 213 °C/W on single-layer PCB. |
| Integrated Capacitor | 2.2 nF: Embedded high-temp ceramic capacitor eliminates external bypass component and improves EMC immunity in noisy 12 V systems. |
| ASIL Safety Current | 1.5–3.8 mA: Fault current level triggers host ECU diagnostics; safe-state output pulse width = 5 ms for unambiguous fault identification. |
Pinout & Package
The A19302PUBATN-RPE is housed in a lead-free, tin-plated 2-pin SIP UB package (18.00 × 4.00 × 1.80 mm), featuring an overmolded construction with molded lead-stabilizing bar for mechanical robustness during shipping and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Voltage | Pin 1 accepts 5.2–24 V input; integrates internal regulator and Zener clamp (28 V) for load-dump protection. |
| GND | Ground | Pin 2 serves as return path and output reference; current-sinking output modulates ICC between LOW/MID/HIGH states. |
Key Features
| Feature | Design Value |
|---|---|
| AK Protocol Output | Self-contained 10-bit word with direction, air gap, temperature status, and parity - eliminates need for external signal conditioning or decoding logic. |
| SolidSpeed Digital Architecture | Dynamic threshold adaptation and signal optimization maintain ±20% pulse-width accuracy during air gap disturbances up to ±0.5 mm. |
| Integrated EEPROM | Enables unique device serialization and firmware revision tracking throughout manufacturing, calibration, and field service lifecycles. |
| ASIL B SEooC Compliance | Hardware-level fault detection and safe-state output (5 ms pulse) meet ISO 26262 requirements without requiring additional safety mechanisms in host ECU. |
| Robust 2-Pin SIP Packaging | Overmolded UB package with integrated capacitor and lead-stabilizing bar achieves >100 g mechanical shock resistance and passes automotive vibration standards (GMW3172, LV-124). |
Applications
| ABS Wheel Speed Sensing | ESC Vehicle Dynamics Control |
|---|---|
Use Scenario: Mounted on wheel hub to monitor rotational speed and direction of each wheel during braking events. IC Role / Device Role / Timing Role: Primary speed and direction sensor feeding real-time data to ABS ECU for slip ratio calculation and valve actuation timing. Use Value: Enables precise wheel lock detection and release within 5–10 ms response window; AK protocol's DR bit allows immediate directional correction during split-μ braking. | Use Scenario: Installed on transmission output shaft or driveshaft to detect yaw rate and wheel speed differentials during cornering or evasive maneuvers. IC Role / Device Role / Timing Role: Direction-aware speed input for ESC lateral acceleration estimation and torque vectoring control loops. Use Value: Provides sub-1° directional resolution at low speeds (<5 km/h), enabling stable yaw control during parking assist and low-speed stability interventions. |
| Electric Power Steering (EPS) | Automotive Parking Assist |
Use Scenario: Integrated into EPS motor housing to sense rotor position and direction for brushless commutation and torque feedback. IC Role / Device Role / Timing Role: High-resolution direction-sensitive speed sensor supporting 12-bit equivalent angular resolution via pulse timing interpolation. Use Value: Delivers <10 µs timing jitter across –40 to 160 °C, ensuring consistent torque assist response and eliminating steering "cogging" at standstill. | Use Scenario: Mounted on rear axle to detect reverse/forward motion and wheel rotation for ultrasonic sensor fusion in automatic parking systems. IC Role / Device Role / Timing Role: Standstill pulse generation (150 ms) and direction bit enable precise vehicle orientation determination before parking maneuver initiation. Use Value: Eliminates need for separate reverse-gear switch input; AK protocol's LR bit warns of degraded magnetic coupling before parking assist fails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wheel speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATS684LSN-T | Uses differential Hall architecture with SENT output; no integrated capacitor; requires external 10 nF bypass. | Designed for higher-speed applications (up to 4 kHz); lacks ASIL B SEooC certification and EEPROM traceability. | Choose when SENT interface compatibility with existing ECU is required and system-level safety validation is handled externally. |
| TLE4961-2K | Two-wire current-output Hall sensor with PWM protocol; no AK data encoding; no EEPROM or ASIL B hardware safety features. | Supports only speed (not direction) in basic variants; direction-capable versions require external logic; rated for 150 °C max junction temp. | Choose for cost-sensitive non-safety applications where direction is derived via dual-sensor phasing, not single-device output. |
Compared with ATS684LSN-T and TLE4961-2K, the A19302PUBATN-RPE uniquely combines AK protocol data richness, embedded safety state signaling, and full lifecycle traceability in a single-component solution - reducing BOM count, simplifying ECU firmware, and accelerating ASIL B system integration.
Availability
A19302PUBATN-RPE is available at Aetrix Electronics and suitable for automotive ABS, ESC, EPS, and parking assist systems requiring stable component supply, long-term lifecycle management, and ISO 26262-compliant sourcing.
Supply support for A19302PUBATN-RPE 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, serving automotive, industrial, and consumer markets since 1989.
The A19302 product line was developed specifically for automotive wheel speed sensing in safety-critical systems, integrating magnetic sensing, digital signal processing, and functional safety features into a single miniature package.
FAQ
What is the function of the A19302PUBATN-RPE in automotive wheel speed sensing?
The A19302PUBATN-RPE functions as a fully self-contained wheel speed and direction sensor IC that outputs AK protocol data over a two-wire interface. It detects differential magnetic fields from ring magnets or ferromagnetic targets, computes rotational speed (0–2.5 kHz) and direction, and encodes this information - along with air gap, temperature, and fault status - into a 10-pulse word. Its integrated capacitor, EEPROM, and ASIL B safety features make the A19302PUBATN-RPE ideal for direct integration into ABS and ESC ECUs without external signal conditioning.
How does the A19302PUBATN-RPE differ from standard Hall-effect sensors in terms of output protocol?
Unlike standard Hall-effect sensors that output simple square waves or PWM signals, the A19302PUBATN-RPE implements the standardized AK protocol, generating a 10-pulse word containing a speed pulse, 8 data bits (direction, air gap reserve, overtemperature, direction validity), and a parity bit. This eliminates the need for host ECU decoding logic and provides richer diagnostic information directly from the sensor. The A19302PUBATN-RPE's AK protocol is compliant with "Requirement Specifications for Standardized Interface for Wheel Speed Sensors" v4.0, with modifications documented in its datasheet.
What does the "-RPE" suffix indicate in A19302PUBATN-RPE?
The "-RPE" suffix in A19302PUBATN-RPE specifies three configuration attributes: "R" indicates reverse rotation polarity (forward rotation defined as target movement from pin 2 to pin 1), "P" denotes AK protocol output (not PW), and "E" signifies support for ferrite or neodymium magnets with ASIL protocol enabled. The "-A" in the full suffix confirms ASIL safety features are active, and "TN" refers to tape-and-reel packaging. This exact variant is optimized for front-wheel ABS applications where reverse-direction detection is critical during deceleration and regenerative braking.
Can the A19302PUBATN-RPE operate reliably at high ambient temperatures?
Yes, the A19302PUBATN-RPE is rated for continuous operation from –40 to +160 °C ambient temperature, with a maximum junction temperature of 175 °C. Its thermal resistance (RθJA = 213 °C/W) and internal overtemperature detection (175 °C trip, 15 °C hysteresis) ensure stable performance in under-hood locations near brake calipers or transmissions. At 150 °C ambient and 12 V supply, typical junction temperature remains below 165 °C - well within specification - provided PCB copper area meets minimum pad requirements per the datasheet.
Does the A19302PUBATN-RPE require external components for basic operation?
No, the A19302PUBATN-RPE requires no external components for basic operation. Its UB package integrates a 2.2 nF high-temperature ceramic capacitor between VCC and GND, eliminating the need for an external bypass capacitor. The device operates with only two connections: VCC (pin 1) and GND (pin 2). External pull-up resistors, filters, or level shifters are unnecessary - the A19302PUBATN-RPE drives current-modulated output directly into standard automotive twisted-pair wiring.
A19302PUBATN-RPE 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 FAQ
1.How can I place an order for A19302PUBATN-RPE through Aetrix?
Please submit a Request for Quotation (RFQ) for A19302PUBATN-RPE 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 reliable?
The price and inventory of A19302PUBATN-RPE 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 is usually 5 days.
3.What payment methods are accepted for A19302PUBATN-RPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A19302PUBATN-RPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A19302PUBATN-RPE?
A19302PUBATN-RPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A19302PUBATN-RPE 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?
For technical support, including A19302PUBATN-RPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A19302PUBATN-RPE requirements.
6.How does Aetrix verify that A19302PUBATN-RPE is sourced from the original manufacturer or authorized distributors?
All A19302PUBATN-RPE 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 meets industry standards.
7.What is the process for return or replacement of A19302PUBATN-RPE?
All A19302PUBATN-RPE units undergo pre-shipment inspection (PSI). If there is an issue with A19302PUBATN-RPE, 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 part is unused and in its original packaging.
Return procedure for A19302PUBATN-RPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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