Texas Instruments DRV5055A3QLPGM

Overview

DRV5055A3QLPGM from Texas Instruments is a ratiometric linear Hall-effect sensor in TO-92 package, designed for analog magnetic field measurement with 25 mV/mT sensitivity at 5 V, ±85 mT linear range, and magnet temperature compensation. It operates from 3.3 V or 5 V supplies, delivers VCC/2 quiescent output (1.65 V at 3.3 V, 2.5 V at 5 V), and supports precision position sensing in industrial actuators and medical devices.

For engineers reviewing the DRV5055A3QLPGM datasheet, DRV5055A3QLPGM pinout, DRV5055A3QLPGM application, or DRV5055A3QLPGM equivalent, key selection factors include its A3-grade magnet temperature compensation (0.12%/°C), 20 kHz bandwidth, ±1 mA output drive capability, low 130 nT/√Hz input-referred noise at 5 V, and compatibility with ratiometric ADC systems using shared VCC reference.

Technical Context

The DRV5055A3QLPGM implements a fully integrated signal chain including Hall element biasing, offset cancellation, precision amplification, and temperature compensation tailored for neodymium magnet drift (–0.12%/°C). Its ratiometric architecture ensures quiescent voltage and sensitivity scale linearly with VCC, enabling error rejection when paired with VCC-referenced ADCs.

It senses magnetic flux perpendicular to the top surface of the TO-92 package, with Hall element located 1.03 mm ±115 µm from the package base. The device features 10 µs propagation delay, operates across –40°C to +125°C ambient, and maintains ±1% sensitivity linearity and ±1% symmetry error within its 0.2 V to VCC–0.2 V output voltage range.

Key Specifications

Pinout & Package

DRV5055A3QLPGM uses the LPG (TO-92, 3-pin) through-hole package, 4 mm × 1.52 mm nominal footprint, with lead pitch of 1.27 mm and body height of 3.3 mm. Sensing axis is perpendicular to the top marking surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV5055A3QLPGM, DRV5055A3QDBZR offers identical performance in a smaller surface-mount package but requires PCB redesign, while A1302LLHLT-T lacks temperature compensation and has lower resolution-making DRV5055A3QLPGM the optimal choice for wide-temperature, high-accuracy industrial and medical position sensing.

Availability

DRV5055A3QLPGM is available at Aetrix Electronics and suitable for industrial automation, medical device design, and home appliance development requiring stable component supply and long-term manufacturability.

Supply support for DRV5055A3QLPGM 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.

DRV5055A3QLPGM belongs to TI's linear Hall-effect sensor product line, engineered for high-accuracy, temperature-stable magnetic position and motion sensing in harsh industrial and safety-critical environments.

FAQ

What is the operating voltage range for DRV5055A3QLPGM?

The DRV5055A3QLPGM operates across two recommended supply 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. Absolute maximum VCC is 7 V, but sustained operation above 5.5 V risks damage.

How does the magnet temperature compensation in DRV5055A3QLPGM improve accuracy?

The DRV5055A3QLPGM applies 0.12%/°C sensitivity temperature compensation (STC) to counteract the typical –0.12%/°C flux loss of neodymium magnets over temperature. This preserves the linear relationship between magnetic field and output voltage across –40°C to +125°C, reducing positional error in applications like medical joint sensors where ambient temperature varies significantly.

Can DRV5055A3QLPGM be used with a 3.3 V microcontroller ADC?

Yes, DRV5055A3QLPGM is fully compatible with 3.3 V systems: its quiescent output is 1.65 V (VCC/2), linear range spans 0.2 V to 3.1 V, and it draws only 2–4 mA supply current at 3.3 V. When the microcontroller's ADC uses the same 3.3 V supply as its reference, the ratiometric architecture eliminates VCC tolerance errors in digitized position data.

What is the sensing direction for DRV5055A3QLPGM in the TO-92 package?

In the LPG (TO-92) package, DRV5055A3QLPGM senses magnetic flux perpendicular to the top surface of the package - i.e., field lines entering or exiting the marked side. A south pole near the top produces positive output voltage; a north pole produces negative voltage. Mechanical mounting must align the magnet's pole axis with this vertical orientation for optimal sensitivity.

Does DRV5055A3QLPGM require external filtering for noise reduction?

DRV5055A3QLPGM does not require external filtering but benefits from an RC low-pass filter when full 20 kHz bandwidth is unnecessary. Adding a series resistor (e.g., 10 kΩ) and shunt capacitor (e.g., 1 nF) to the OUT pin reduces output-referred noise by ~6 dB per octave, improving SNR in static or low-speed position sensing - provided the resistor prevents direct capacitive loading that could destabilize the output driver.