Texas Instruments DRV5055A1QLPGM

Overview

DRV5055A1QLPGM from Texas Instruments is a ratiometric linear Hall-effect sensor designed for precise analog magnetic field measurement in industrial and consumer motion-sensing systems. It operates from 3.3 V or 5 V supplies, delivers a VCC/2 quiescent output (2.5 V at 5 V), offers 100 mV/mT sensitivity, ±21 mT linear range, and 20 kHz bandwidth - enabling high-fidelity position sensing in motor commutation, pedal actuation, and tilt detection.

For engineers reviewing the DRV5055A1QLPGM datasheet, DRV5055A1QLPGM pinout, DRV5055A1QLPGM application, or DRV5055A1QLPGM equivalent, key selection criteria include its magnet temperature compensation (0.12%/°C STC), ±1 mA output drive capability, low 130 nT/√Hz input-referred noise at 5 V, TO-92 package mechanical robustness, and ratiometric architecture compatibility with VCC-referenced ADCs.

Technical Context

The DRV5055A1QLPGM implements a fully integrated signal chain including Hall element biasing, offset cancellation, precision amplification, and magnet temperature compensation - all calibrated to maintain linearity across –40°C to 125°C. Its ratiometric design ensures proportional scaling of both quiescent voltage and sensitivity with VCC, eliminating supply tolerance errors when paired with a VCC-referenced ADC.

It senses magnetic flux perpendicular to the top surface of its TO-92 package (LPG), with the Hall element located 1.03 mm ±115 µm from the package base. The device features fast 10 µs propagation delay, supports wire-break fault detection via external pull-up, and requires only a 0.01 µF ceramic decoupling capacitor on VCC.

Key Specifications

Pinout & Package

DRV5055A1QLPGM uses the LPG (TO-92, 3-pin) through-hole package (4.0 mm × 1.52 mm), optimized for mechanical stability in vibration-prone environments and ease of manual assembly. Pin 1 is VCC, Pin 2 is OUT, Pin 3 is GND - matching standard TO-92 orientation with flat side facing viewer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Hall-effect sensor applications.

Compared with DRV5055A1QLPGM, DRV5055A1QDBZR offers identical performance in a smaller SMT package but requires layout redesign, while A1302LLHLT-T provides higher sensitivity without temperature compensation - making DRV5055A1QLPGM the preferred choice for thermally demanding, mechanically rugged, dual-supply applications.

Availability

DRV5055A1QLPGM is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and home appliance designs requiring stable component supply, long-term manufacturability, and guaranteed traceability.

Supply support for DRV5055A1QLPGM 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

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision sensing, power management, and signal chain solutions.

DRV5055A1QLPGM belongs to TI's Hall-effect sensor product line, engineered for high-accuracy, temperature-stable magnetic position and motion sensing in harsh industrial and consumer environments.

FAQ

What is the operating supply voltage range for DRV5055A1QLPGM?

The DRV5055A1QLPGM operates from two recommended voltage ranges: 3.0 V to 3.63 V and 4.5 V to 5.5 V. Operation between 3.63 V and 4.5 V is functional but exhibits less predictable sensitivity due to an internal crossover threshold near 4 V. At 5 V, DRV5055A1QLPGM delivers 100 mV/mT sensitivity and 2.5 V quiescent output.

How does the magnet temperature compensation in DRV5055A1QLPGM improve accuracy?

DRV5055A1QLPGM applies 0.12%/°C sensitivity temperature compensation (STC) to counteract the natural reduction in magnetic field strength from neodymium magnets as temperature rises. This ensures consistent mV/mT output scaling across –40°C to 125°C, maintaining linearity and reducing system-level calibration needs - a key advantage over uncompensated alternatives like DRV5055Z1QLPGM.

Can DRV5055A1QLPGM be used with a 3.3 V microcontroller ADC?

Yes, DRV5055A1QLPGM supports 3.3 V operation with full functionality: quiescent output is 1.65 V, sensitivity is 60 mV/mT, and linear range is ±22 mT. Its ratiometric architecture ensures that when the same 3.3 V rail powers both DRV5055A1QLPGM and the microcontroller's ADC reference, supply tolerance errors cancel - preserving measurement fidelity without external regulation.

What is the sensing direction of DRV5055A1QLPGM in the LPG (TO-92) package?

In the LPG package, DRV5055A1QLPGM senses magnetic flux perpendicular to the top surface of the package - meaning the strongest response occurs when a magnet approaches vertically from above (south pole toward marked side yields positive B). The Hall element is located 1.03 mm ±115 µm from the package base, making it ideal for through-panel or rear-mounted magnet configurations.

Does DRV5055A1QLPGM require external components for basic operation?

DRV5055A1QLPGM requires only one external component for stable operation: a 0.01 µF ceramic decoupling capacitor between VCC and GND, placed as close as possible to the pins. No pull-up/pull-down resistors, filters, or gain stages are needed for standard analog output use - though an RC low-pass filter may be added to OUT if bandwidth beyond 20 kHz is unnecessary and noise reduction is desired.