Allegro MicroSystems A19200LUBATN-L-A

Overview

A19200LUBATN-L-A from Allegro MicroSystems is an ASIL B(D)-compliant, two-wire Hall-effect wheel speed sensor IC in a 2-pin SIP (UB) package with integrated 2.2 nF ceramic capacitor. It delivers true zero-speed digital sensing of ring magnets or ferromagnetic targets, features ICC(LOW) power-on state and enabled ASIL fault detection, and is designed for automotive ABS and ESC systems operating from –40°C to +150°C.

For engineers reviewing the A19200LUBATN-L-A datasheet, A19200LUBATN-L-A pinout, A19200LUBATN-L-A application, or A19200LUBATN-L-A equivalent, this page provides verified technical context, functional pin mapping, real-world wheel-speed use cases, safety-critical design values, and validated alternative options aligned with ISO 26262 SEooC requirements.

Technical Context

The A19200LUBATN-L-A implements dual differential Hall elements spaced at 1.75 mm pitch to generate VPROC for precise magnetic edge detection; it includes on-die temperature-compensated amplifier, offset cancellation, and internal regulator for supply-noise rejection across 4–24 V. Its fully synchronous digital logic supports scan and IDDQ testing for production test coverage.

ASIL B(D) compliance is achieved via integrated diagnostics including continuous fault monitoring and ASIL-safe-state current (IFAULT = 1–3.3 mA), with output protocol switching between ICC(LOW) and ICC(HIGH) states based on magnetic transitions - no external components required due to integrated 2.2 nF supply capacitor.

Key Specifications

Pinout & Package

Package: UB - 2-pin single-inline package (SIP), overmolded, Pb-free with tin-plated leadframe, 18.00 mm length × 4.00 mm width × 1.80 mm height, branded face with part number/date code/lot marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wheel-speed sensing applications.

Compared with A19200LUBATN-H-A and ATS6849LSGT-T, the A19200LUBATN-L-A uniquely combines ICC(LOW) startup, enabled ASIL fault reporting, and integrated capacitor - reducing PCB area by ≥25% and eliminating EMI filter validation effort in new ABS/ESC designs.

Availability

A19200LUBATN-L-A is available at Aetrix Electronics and suitable for automotive ABS, ESC, EPB, and transmission speed sensing applications requiring stable component supply, long-term lifecycle support, and ASIL-compliant sourcing traceability.

Supply support for A19200LUBATN-L-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, founded in 1989 and headquartered in Manchester, NH.

The A19200 product line delivers ASIL-certified, two-wire wheel speed sensors optimized for automotive safety systems - engineered to replace legacy analog sensors while simplifying EMC design and enabling zero-speed functionality in compact packaging.

FAQ

What is the power-on behavior of the A19200LUBATN-L-A?

The A19200LUBATN-L-A powers up in the ICC(LOW) state, drawing 5.9–8.4 mA typical supply current. This low-current default reduces system wake-up load and is specifically selected for applications where ECU expects minimal initial current draw before magnetic activity begins. The A19200LUBATN-L-A maintains this state until a valid magnetic transition triggers output switching.

Does the A19200LUBATN-L-A require external filtering components?

No, the A19200LUBATN-L-A integrates a 2.2 nF ceramic capacitor between VCC and GND inside the UB package, eliminating the need for external EMI filtering components. This integration improves electromagnetic compatibility, reduces PCB footprint by ~3.5 mm², and removes variability from external capacitor selection and placement - all confirmed in the A19200-DS Rev. 3 functional description and internal capacitor ratings table.

How does the A19200LUBATN-L-A achieve ASIL B(D) compliance?

The A19200LUBATN-L-A achieves ASIL B(D) compliance as a hardware safety element out-of-context (SEooC) per ISO 26262, with integrated diagnostics including continuous internal fault monitoring and ASIL-safe-state current (IFAULT = 1–3.3 mA). Compliance requires strict adherence to the safety manual's integration guidelines - the A19200LUBATN-L-A itself does not perform software-level ASIL decomposition but provides certified hardware-level fault detection.

What is the magnetic sensitivity range supported by the A19200LUBATN-L-A?

The A19200LUBATN-L-A supports a differential magnetic input signal (BSIG) range of 20–1200 G peak-to-peak, with allowable external differential offset (BSIGEXT) of ±300 G. Its sensitivity temperature coefficient is +0.2 %/°C, and it compensates for ring magnet strength loss with rising temperature - ensuring stable BOP/BRP thresholds across –40°C to +150°C operation.

Can the A19200LUBATN-L-A detect direction of rotation?

Yes, the A19200LUBATN-L-A detects direction of rotation through output polarity inversion: when target motion is from pin 1 to pin 2, a south pole passing the branded face produces ICC(HIGH); reversing motion or using an A19200LUBx-L variant flips the output state sequence. This behavior is defined in Table 1 and Figure 4 of the A19200-DS Rev. 3, and requires no external logic or additional sensors.