Texas Instruments DRV5055A2QDBZR

Overview

DRV5055A2QDBZR from Texas Instruments is a ratiometric linear Hall-effect sensor for analog magnetic field measurement, featuring 50 mV/mT sensitivity at 5 V, ±42 mT linear sensing range, 20 kHz bandwidth, and SOT-23 (DBZ) surface-mount package. It delivers V_CC/2 quiescent output voltage and operates from 3.3 V or 5 V supplies in industrial position-sensing applications.

For engineers reviewing the DRV5055A2QDBZR datasheet, DRV5055A2QDBZR pinout, DRV5055A2QDBZR application, or DRV5055A2QDBZR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional distinctions, and supply-chain support details specific to this A2-sensitivity, DBZ-packaged variant.

Technical Context

The DRV5055A2QDBZR implements a fully integrated ratiometric architecture where both quiescent voltage and sensitivity scale linearly with V_CC, enabling error cancellation when paired with an ADC using the same V_CC reference. Its internal temperature compensation for magnet drift (0.12%/°C STC) maintains linearity across –40°C to 125°C ambient.

This variant uses a single silicon Hall element centered within the SOT-23 package, sensitive only to magnetic flux perpendicular to the top surface. It requires no external configuration, operates in one functional mode, and features low-noise analog output capable of ±1 mA drive into downstream circuitry.

Key Specifications

Pinout & Package

SOT-23 (DBZ) 3-pin surface-mount package: 2.92 mm × 2.37 mm footprint with gull-wing leads, optimized for automated assembly and compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV5055A2QDBZR, DRV5053VAQLPGM offers lower-voltage operation but sacrifices magnet temperature compensation and SOT-23 footprint; MLX90242ESE-GAA-000-RE provides digital configurability and triaxial capability at the cost of added software overhead and loss of direct analog interface simplicity.

Availability

DRV5055A2QDBZR is available at Aetrix Electronics and suitable for industrial automation, robotics, and medical device applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for DRV5055A2QDBZR 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.

The DRV5055 product line delivers ratiometric linear Hall-effect sensors designed specifically for high-accuracy, temperature-stable magnetic position and motion sensing in harsh industrial and automotive environments.

FAQ

What is the exact sensitivity and linear range of DRV5055A2QDBZR at 5 V supply?

The DRV5055A2QDBZR has a nominal sensitivity of 50 mV/mT and a linear magnetic sensing range of ±42 mT when operated at V_CC = 5 V and T_A = 25°C. This range is defined by the device's ±1% linearity error specification and accounts for worst-case quiescent voltage and sensitivity tolerances. At 3.3 V, sensitivity drops to 30 mV/mT with ±44 mT range.

Does DRV5055A2QDBZR require external components for basic operation?

No, DRV5055A2QDBZR operates autonomously with only a 0.01 µF ceramic decoupling capacitor between V_CC and GND. Its integrated signal conditioning, temperature compensation, and ratiometric architecture eliminate need for external op-amps, resistors, or calibration circuitry-enabling direct connection to an ADC input or analog filter network.

How does the magnet temperature compensation in DRV5055A2QDBZR improve system accuracy?

DRV5055A2QDBZR applies 0.12%/°C sensitivity increase to counteract the typical –0.12%/°C flux loss of neodymium magnets. This active compensation maintains consistent output voltage per mT across –40°C to 125°C, reducing full-scale error from >10% to <1% in un-compensated systems-critical for medical and industrial applications demanding stable calibration.

Can DRV5055A2QDBZR be used with a 3.3 V microcontroller ADC reference?

Yes-DRV5055A2QDBZR's ratiometric architecture ensures its output scales precisely with V_CC. When both the sensor and microcontroller ADC share the same 3.3 V supply rail, V_CC variations cancel out, delivering measurement accuracy independent of power rail tolerance. This eliminates need for precision voltage references in cost-sensitive designs.

What is the sensing directionality of DRV5055A2QDBZR in the SOT-23 package?

DRV5055A2QDBZR detects magnetic flux perpendicular to the top surface of its SOT-23 (DBZ) package. A south pole approaching the marked side produces positive output voltage; north pole produces negative voltage. The Hall element is centered 650 µm below the top surface, requiring magnet alignment parallel to the PCB plane for optimal sensitivity.