Allegro MicroSystems A19200LUBATN-H-A

Overview

A19200LUBATN-H-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 synchronous digital logic with IDDQ testability, and operates from –40°C to +150°C for automotive ABS and ESC systems.

For engineers reviewing the A19200LUBATN-H-A datasheet, A19200LUBATN-H-A pinout, A19200LUBATN-H-A application, or A19200LUBATN-H-A equivalent, this page provides verified technical context, safety-critical specifications, fault detection behavior, thermal derating guidance, and OEM-grade supply support for automotive embedded design and production.

Technical Context

The A19200LUBATN-H-A implements dual differential Hall elements spaced at 1.75 mm pitch to sense magnetic field gradients across rotating targets, enabling precise edge detection without external signal conditioning. Its internal regulator rejects supply noise across 4–24 V operation, and self-calibrating offset cancellation compensates for temperature drift with ±2% total pitch deviation.

It integrates ASIL B(D) diagnostics per ISO 26262 as a hardware safety element out-of-context (SEooC), delivering IFAULT = 1–3.3 mA safety current during detected faults. The device uses fully synchronous digital logic with scan and direct-drain IDDQ testing, and its output polarity is configurable via part variant (H = ICC(HIGH) power-on state, A = ASIL protocol enabled).

Key Specifications

Pinout & Package

The A19200LUBATN-H-A is housed in a lead-free, overmolded 2-pin single-inline package (SIP, UB), measuring 18.00 × 4.00 × 1.80 mm, with tin-plated leadframe and branded face indicating pin 1 orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with A19200LUBATN-H-A, the A19300LUBATN-H-A extends bandwidth for next-gen EV platforms, while the ATS6858LSGT-T offers GMR-based alternative without integrated capacitance-requiring additional PCB area and component count for equivalent EMC performance.

Availability

A19200LUBATN-H-A is available at Aetrix Electronics and suitable for automotive ABS, ESC, TCS, and EPS applications requiring stable component supply, ASIL-compliant sourcing, and long-term lifecycle continuity.

Supply support for A19200LUBATN-H-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 and GMR sensors, power ICs, and motor driver solutions for automotive, industrial, and consumer markets.

The A19200 product line delivers ASIL-certified, two-wire wheel speed sensors optimized for functional safety-critical automotive systems including braking, stability control, and electric power steering.

FAQ

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

The A19200LUBATN-H-A powers up in the ICC(HIGH) state, drawing 12–16 mA immediately upon valid VCC application. This high-current state enables rapid initialization and diagnostic readiness within milliseconds, supporting fast system boot sequences in modern automotive ECUs. The "H" in the part number explicitly denotes this high-power-on configuration, distinguishing it from the ICC(LOW) variant.

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

No, the A19200LUBATN-H-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 reduces PCB component count, saves board space, and enhances electromagnetic compatibility in noisy automotive environments-verified per CISPR 25 Class 5 testing protocols referenced in the safety manual.

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

The A19200LUBATN-H-A achieves ASIL B(D) compliance as a hardware safety element out-of-context (SEooC) per ISO 26262, incorporating continuous internal diagnostics, IDDQ testability, and fault current (IFAULT = 1–3.3 mA) assertion. Compliance requires correct integration per the official Allegro safety manual-including proper power sequencing, diagnostic monitoring, and fault response handling-making A19200LUBATN-H-A a foundational building block for ASIL B(D) system architectures.

What magnetic targets are compatible with the A19200LUBATN-H-A?

The A19200LUBATN-H-A is optimized for radial ring magnets and ferromagnetic gear teeth, with dual Hall elements spaced at 1.75 mm pitch to resolve fine mechanical features. It accepts differential magnetic signals from 20 G to 1200 G peak-to-peak and tolerates ±300 G external DC offset, enabling robust operation across diverse target geometries, air gaps, and temperature-induced magnet strength variations.

What is the thermal derating limit for A19200LUBATN-H-A at 150°C ambient?

At TA = 150°C, the A19200LUBATN-H-A's maximum allowable power dissipation is 70.4 mW (calculated from ΔTmax = 15°C and RθJA = 213°C/W). With ICC(max) = 16 mA, this limits VCC to ≤4.4 V under worst-case conditions. Therefore, reliable operation at full 24 V requires enhanced thermal management-such as increased copper area or forced convection-to reduce effective RθJA below 213°C/W.