Texas Instruments DRV5056A3QLPGM

Overview

DRV5056A3QLPGM from Texas Instruments is a unipolar ratiometric linear Hall-effect sensor in TO-92 (LPG) package, designed for precise analog position sensing using south-pole magnetic fields. It delivers 50 mV/mT sensitivity at 5 V, supports 79 mT linear range, operates from 3.3 V or 5 V supplies, and features magnet temperature compensation across –40°C to +125°C for industrial position feedback systems.

For engineers reviewing the DRV5056A3QLPGM datasheet, DRV5056A3QLPGM pinout, DRV5056A3QLPGM application, or DRV5056A3QLPGM equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support for production deployment in motion control and precision measurement.

Technical Context

The DRV5056A3QLPGM implements a ratiometric analog output architecture where sensitivity scales linearly with VCC-enabling consistent ADC digitization when the same VCC powers both sensor and reference. Its internal temperature compensation counteracts typical NdFeB magnet drift (≈0.12%/°C), maintaining linearity over full industrial temperature range.

This variant uses a single silicon Hall element biased and amplified on-die, with offset cancellation and low-noise signal conditioning. Magnetic flux perpendicular to the top surface of the TO-92 package is sensed, and the device outputs a voltage referenced to VCC with 0.6 V quiescent offset-maximizing dynamic swing for unipolar south-pole detection only.

Key Specifications

Pinout & Package

DRV5056A3QLPGM uses the TO-92 (LPG) 3-pin through-hole package (4.00 mm × 1.52 mm), optimized for axial magnetic field coupling from above. Pin 1 is VCC, Pin 2 is OUT, and Pin 3 is GND-matching standard TO-92 orientation with flat side facing viewer and leads down.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV5056A3QLPGM, the SOT-23 variant offers identical sensing performance in a smaller footprint but higher thermal resistance, while the MLX90242 replaces analog simplicity with digital flexibility at the cost of added system complexity and loss of ratiometric advantage.

Availability

DRV5056A3QLPGM is available at Aetrix Electronics and suitable for industrial position feedback, medical actuation, home appliance motor control, and automotive throttle sensing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DRV5056A3QLPGM 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision sensing, power management, and signal chain solutions.

The DRV5056 product line delivers ratiometric linear Hall-effect sensors optimized for high-accuracy unipolar position sensing in harsh environments-designed specifically for industrial automation, medical devices, and automotive subsystems demanding robustness and temperature stability.

FAQ

What is the magnetic polarity response of the DRV5056A3QLPGM?

The DRV5056A3QLPGM responds exclusively to the south magnetic pole applied perpendicular to the top surface of its TO-92 package. It outputs a voltage that increases linearly from 0.6 V quiescent level with increasing south-pole flux density-no response occurs for north-pole fields. This unipolar behavior eliminates ambiguity in directional sensing applications such as linear position feedback.

Does the DRV5056A3QLPGM require external components for basic operation?

Yes-the DRV5056A3QLPGM requires a minimum 0.1 µF ceramic decoupling capacitor between VCC and GND, placed as close as possible to the device pins. No external resistors or filters are needed for standard operation, though an RC low-pass filter may be added to OUT if 20 kHz bandwidth exceeds system requirements and noise reduction is desired.

How does the ratiometric architecture of the DRV5056A3QLPGM improve system accuracy?

The DRV5056A3QLPGM's ratiometric architecture causes its sensitivity and output voltage scale proportionally with VCC. When the same VCC powers both the DRV5056A3QLPGM and the ADC reference, supply voltage tolerances cancel out-reducing total system error. For example, a ±5% VCC variation induces no net gain error in the digitized result, unlike non-ratiometric sensors.

What is the linear magnetic sensing range of the DRV5056A3QLPGM at 3.3 V supply?

At 3.3 V supply and 25°C, the DRV5056A3QLPGM has a guaranteed linear magnetic sensing range (BL) of 78 mT. This is derived from its 30 mV/mT sensitivity and 0.6 V quiescent offset, ensuring output remains within the valid linear voltage range (VL) of 0.6 V to VCC – 0.2 V (3.1 V), supporting full-scale analog resolution without saturation or nonlinearity.

Can the DRV5056A3QLPGM detect magnets through metal enclosures?

No-the DRV5056A3QLPGM cannot reliably sense through ferromagnetic metals (e.g., steel, iron, nickel) because they shunt and distort magnetic flux. However, it works effectively through non-ferromagnetic materials like aluminum housings, plastic casings, or printed circuit board substrates. For metal-enclosed designs, mount the sensor externally or use non-ferrous shielding to preserve field integrity.