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Allegro MicroSystems A19350LUBATN-RBE
- Part No.:
- A19350LUBATN-RBE
- Manufacturer:
- Allegro MicroSystems
- Package:
- 2-SIP Module
- Datasheet:
-
A19350LUBATN-RBE.pdf
- Description:
- LARGE AIR GAP, VIBRATION IMMUNE,
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
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Product details
Overview
A19350LUBATN-RBE from Allegro MicroSystems is a Giant Magnetoresistance (GMR) wheel speed and direction sensor IC with two-wire current-source output, ASIL B safety compliance, integrated 2.2 nF capacitor, and operation over –40°C to +150°C for automotive ABS and ESC systems.
For engineers reviewing the A19350LUBATN-RBE datasheet, A19350LUBATN-RBE pinout, A19350LUBATN-RBE application, or A19350LUBATN-RBE equivalent, this page delivers verified technical context, real-world timing protocol values, GMR-specific magnetic performance limits, and functional alternatives for wheel-speed sensing in safety-critical vehicle subsystems.
Technical Context
The A19350LUBATN-RBE implements differential GMR sensing with dual-channel front-end amplification and adaptive threshold switching to reject common-mode magnetic interference. Its SolidSpeed Digital Architecture enables vibration immunity across full target pitch and supports dynamic calibration without external components.
It uses a two-wire pulse-width modulation (PWM) output protocol where forward rotation is encoded by 76–104 μs pulses, reverse by 153–207 μs, and ASIL-safe states by distinct reset pulses (90 μs EP1 or 3–6 ms EP2), all referenced to ICC(HIGH)/ICC(LOW) = 1.9 ratio and operating up to 3.9 kHz forward frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4–24 V - Enables direct connection to automotive battery rails with internal zener clamp at 28 V. |
| Operating Temperature | –40°C to +150°C - Qualified for under-hood placement in ABS/ESC modules without external thermal management. |
| Output Protocol | Pulse-width modulated two-wire current source - Eliminates need for separate signal and ground wires; compatible with standard current-sense receivers. |
| Differential Magnetic Input | 5–20 Gpk-pk minimum detectable - Ensures reliable edge detection at large air gaps (>2 mm) typical in wheel bearing assemblies. |
| ASIL Compliance | ASIL B SEooC per ISO 26262 - Validated hardware safety element requiring integration per safety manual; includes diagnostics for regulator and front-end faults. |
| Integrated Capacitor | 2.2 nF ceramic - Embedded in UB SIP package for EMC robustness; removes external decoupling requirement and reduces PCB footprint. |
| Target Pitch Range | 1.4–8 mm - Supports standard ring magnet pole pitches used in passenger car and light-truck wheel speed applications. |
Pinout & Package
The A19350LUBATN-RBE is housed in a 2-pin Single-In-Line (SIP) overmolded UB package with molded lead-stabilizing bar, Pb-free tin-plated leadframe, and integrated capacitor between pins. Package dimensions: 18.00 × 4.00 × 1.80 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Voltage | Pin 1 accepts 4–24 V input; internally regulates bias for GMR elements, ADC, and digital controller; clamped at 28 V. |
| GND | Ground | Pin 2 serves as return path for supply current and output current sink; forms two-wire loop with VCC for PWM signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Differential GMR Sensing | Rejects common-mode magnetic fields via spaced E1–E3 and E2–E4 element pairs; enables >2 mm air gap operation with <0.3% repeatability error. |
| Drop-in Hall Replacement | Same physical orientation and mounting as legacy Hall sensors; no mechanical redesign needed when upgrading to higher-accuracy GMR sensing. |
| Vibration Immunity Mode | Configurable via part suffix (RBE = high-vibration immunity); maintains direction accuracy during chassis shake and road-induced oscillation. |
| EEPROM Traceability | Built-in scratch memory stores device-specific calibration and manufacturing data across production lifecycle for traceability and quality control. |
| Front-Biased Ring Magnet Support | Optimized for radial ferrite ring magnets with 1.4–8 mm pitch; compensates for temperature-dependent magnetic field drift (0.2%/°C TC). |
Applications
| ABS Wheel Speed Sensing | ESC Vehicle Dynamics Monitoring |
|---|---|
Use Scenario: Mounted on steering knuckle or hub carrier to monitor rotational speed and direction of each wheel during braking events. IC Role / Device Role / Timing Role: GMR-based wheel speed and direction sensor delivering ASIL B-compliant pulse-width output to ABS ECU via two-wire interface. Use Value: Enables precise slip ratio calculation and individual wheel torque intervention at speeds up to 3.9 kHz (≈250 km/h at 2 mm pitch), with <0.3% repeatability under thermal and vibration stress. | Use Scenario: Integrated into electronic stability control module to detect yaw rate discrepancies and initiate corrective braking. IC Role / Device Role / Timing Role: Direction-aware speed sensor feeding real-time wheel kinematics to ESC controller for lateral acceleration compensation. Use Value: Provides immediate direction-change detection (<4 ms recovery in high-vibration mode) and standstill pulse generation (for -xxE variants) to distinguish zero-speed from sensor fault. |
| Electric Power Steering (EPS) Position Feedback | Automotive Transmission Speed Sensing |
Use Scenario: Installed on EPS motor shaft or rack to monitor assist motor rotation and detect steering angle direction. IC Role / Device Role / Timing Role: Two-wire GMR sensor providing direction-resolved speed pulses to EPS ECU for torque overlay control and fault detection. Use Value: Delivers vibration-immune direction output even during high-frequency road noise; eliminates need for separate direction logic or dual-sensor solutions. | Use Scenario: Positioned near transmission output shaft to monitor gear engagement speed and detect neutral vs. drive/reverse state. IC Role / Device Role / Timing Role: Wheel-speed-class GMR sensor adapted for transmission use via configurable pulse mapping (FWD/REV polarity per -Fxx/-Rxx suffix). Use Value: Supports bidirectional detection up to 2.4 kHz reverse frequency; EEPROM traceability ensures calibration integrity across multi-year transmission service life. |
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 |
|---|---|---|---|
| A19350LUBATN-FBE | Same GMR core, package, and ASIL B compliance; differs only in rotation polarity definition (FBE = forward = pin 1 → pin 2, RBE = forward = pin 2 → pin 1). | Requires matching target rotation direction and ECU interpretation logic; not interchangeable without firmware update. | Select FBE when target passes from pin 1 to pin 2 during forward motion; RBE when opposite. |
| ATS6849LSGT-T | AMR-based sensor with 3-wire interface, no integrated capacitor, lower max frequency (2.5 kHz), and ASIL A rating only. | Lacks ASIL B diagnostics coverage and two-wire simplicity; requires external decoupling and separate ground return. | Use only if ASIL B is not required and board layout allows 3-wire routing and discrete capacitor placement. |
Compared with A19350LUBATN-RBE, the FBE variant offers identical performance but reversed polarity mapping-requiring ECU alignment-while ATS6849LSGT-T trades ASIL B compliance and two-wire integration for lower cost and broader legacy compatibility in non-safety-critical designs.
Availability
A19350LUBATN-RBE is available at Aetrix Electronics and suitable for automotive ABS, ESC, and EPS systems requiring stable component supply, long-term lifecycle support, and ASIL B-certified sensing performance.
Supply support for A19350LUBATN-RBE 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, serving automotive, industrial, and consumer markets since 1989.
The A19350 belongs to Allegro's ASIL-compliant GMR wheel speed sensor family, engineered specifically for safety-critical automotive motion sensing where accuracy, vibration resilience, and functional safety certification are mandatory.
FAQ
What is the function of the integrated 2.2 nF capacitor in the A19350LUBATN-RBE?
The integrated 2.2 nF ceramic capacitor in the A19350LUBATN-RBE is connected between VCC (pin 1) and GND (pin 2) to provide local high-frequency decoupling and enhance EMC robustness. It eliminates the need for an external capacitor on the PCB, reduces layout sensitivity, and improves immunity to conducted noise in harsh automotive environments. This capacitor is embedded within the overmolded UB SIP package and rated for full operating temperature range.
How does the A19350LUBATN-RBE indicate forward versus reverse rotation?
The A19350LUBATN-RBE indicates forward and reverse rotation using pulse-width modulation on its two-wire current output: forward rotation generates pulses of 76–104 μs width, while reverse rotation produces longer pulses of 153–207 μs width. For the RBE variant, forward rotation is defined as target motion from pin 2 to pin 1. The output remains in ICC(LOW) state (5.9–8.4 mA) between pulses, and the ratio ICC(HIGH)/ICC(LOW) ≈ 1.9 ensures reliable detection by standard current-sense receivers.
Is the A19350LUBATN-RBE pin-compatible with Hall-effect wheel speed sensors?
Yes, the A19350LUBATN-RBE is designed as a drop-in replacement for Hall-effect wheel speed sensors in terms of mechanical orientation and mounting. Its UB package uses the same 2-pin SIP footprint and allows identical PCB placement and target alignment. However, electrical interface remains two-wire current-loop (not voltage-output), and polarity mapping (RBE vs. FBE) must match the target's physical rotation direction relative to pin numbering.
What diagnostic capabilities does the A19350LUBATN-RBE provide for ASIL B compliance?
The A19350LUBATN-RBE provides integrated diagnostics covering regulator faults, front-end amplifier failures, and over-frequency input conditions. Upon detecting a fault, it enters one of two ASIL-safe output protocols: Error Protocol 1 (90 μs reset pulse) for transient over-frequency events, or Error Protocol 2 (3–6 ms reset pulse) for hard failures. These protocols are defined in the safety manual and validated as part of its ASIL B SEooC development per ISO 26262.
What is the maximum operating frequency supported by the A19350LUBATN-RBE in forward rotation mode?
The A19350LUBATN-RBE supports a maximum forward rotation operating frequency of 3.9 kHz, corresponding to wheel speeds exceeding 250 km/h for typical ring magnet pitches (e.g., 2 mm). This limit is determined by pulse-width timing constraints: at higher frequencies, the tW(REV) pulse (up to 207 μs) begins to overlap with subsequent tW(PRE) off-times (38–52 μs), causing pulse collision and loss of direction resolution. Operation beyond 3.9 kHz requires custom configuration options per Allegro.
A19350LUBATN-RBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 2-SIP Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Hall Effect
- Output Type:
- Open Collector
- Actuator Material:
- Magnet
- Termination Style:
- -
- Frequency:
- 3.9 kHz
- Voltage - Supply:
- 4V ~ 24V
- Must Operate:
- -
- Must Release:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
A19350LUBATN-RBE FAQ
1.How can I place an order for A19350LUBATN-RBE through Aetrix?
Please submit a Request for Quotation (RFQ) for A19350LUBATN-RBE 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 A19350LUBATN-RBE reliable?
The price and inventory of A19350LUBATN-RBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A19350LUBATN-RBE is usually 5 days.
3.What payment methods are accepted for A19350LUBATN-RBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A19350LUBATN-RBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A19350LUBATN-RBE?
A19350LUBATN-RBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A19350LUBATN-RBE 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 A19350LUBATN-RBE?
For technical support, including A19350LUBATN-RBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A19350LUBATN-RBE requirements.
6.How does Aetrix verify that A19350LUBATN-RBE is sourced from the original manufacturer or authorized distributors?
All A19350LUBATN-RBE 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 A19350LUBATN-RBE meets industry standards.
7.What is the process for return or replacement of A19350LUBATN-RBE?
All A19350LUBATN-RBE units undergo pre-shipment inspection (PSI). If there is an issue with A19350LUBATN-RBE, 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 A19350LUBATN-RBE part is unused and in its original packaging.
Return procedure for A19350LUBATN-RBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
A19350LUBATN-RBE Tags
-
HS-3511-02-0300
PIC GmbH
-
ATS19480LSNBTN
Allegro MicroSystems
-
55100-2M-02-A
Littelfuse Inc.
-
55100-3H-02-A
Littelfuse Inc.
-
55100-3M-02-A
Littelfuse Inc.
-
55100-3M-03-A
Littelfuse Inc.
-
55100-3H-04-A
Littelfuse Inc.
-
55140-3H-02-A
Littelfuse Inc.
-
55100-AP-02-A
Littelfuse Inc.
-
GS101201
ZF Electronics
-
55505-00-02-A
Littelfuse Inc.
-
GS100701
ZF Electronics
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