Texas Instruments DRV5055Z3QDBZR

Overview

DRV5055Z3QDBZR from Texas Instruments is a ratiometric linear Hall-effect sensor IC designed for precise analog magnetic field measurement in industrial and consumer motion-sensing systems. It delivers 25 mV/mT sensitivity at 5 V, ±85 mT linear sensing range, 20 kHz bandwidth, and operates from 3.3 V or 5 V supplies. Its role is to convert perpendicular magnetic flux density into a temperature-stable analog voltage output referenced to VCC - used in position feedback loops for motor control and tilt sensing.

For engineers reviewing the DRV5055Z3QDBZR datasheet, DRV5055Z3QDBZR pinout, DRV5055Z3QDBZR application, or DRV5055Z3QDBZR equivalent, key selection criteria include magnet temperature drift compensation (none for Z-versions), quiescent offset at VCC/2, SOT-23 package compatibility with PCB space constraints, and ratiometric architecture enabling ADC reference sharing with VCC.

Technical Context

The DRV5055Z3QDBZR implements a fully integrated signal chain including Hall element biasing, offset cancellation, precision amplification, and bandgap-referenced trimming - all optimized for analog magnetic field linearity across –40°C to 125°C. Its ratiometric architecture ensures quiescent voltage and sensitivity scale linearly with VCC, eliminating supply tolerance errors when paired with an ADC using the same VCC as reference.

Unlike A-versions, the Z3 variant provides zero sensitivity temperature compensation (STC = 0%/°C), making it suitable for applications where magnet thermal drift is intentionally left uncompensated - such as systems using temperature-stable samarium-cobalt magnets or those requiring predictable, non-compensated output slope over temperature.

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. Sensing axis perpendicular to top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV5055A3QDBZR, the DRV5055Z3QDBZR trades magnet temperature compensation for deterministic output slope and simplified calibration; versus MLX90242, it offers smaller size, lower power, and true ratiometric operation - making it superior for uniaxial, space-constrained, supply-tolerant analog sensing.

Availability

DRV5055Z3QDBZR is available at Aetrix Electronics and suitable for industrial automation, consumer motion interfaces, and automotive pedal sensing requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for DRV5055Z3QDBZR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The DRV5055 product line targets high-accuracy, low-cost magnetic position sensing - engineered specifically for applications demanding ratiometric analog output, wide temperature operation, and minimal external components.

FAQ

What is the magnetic sensitivity and linear range of the DRV5055Z3QDBZR?

The DRV5055Z3QDBZR has a nominal sensitivity of 25 mV/mT at 5 V supply and a linear magnetic sensing range of ±85 mT at 25°C. This means the output voltage changes linearly by 25 mV per millitesla of applied magnetic flux density perpendicular to the package top, supporting full-scale analog output from 0.2 V to VCC – 0.2 V within that range. The DRV5055Z3QDBZR maintains ±1% linearity error inside this band.

Does the DRV5055Z3QDBZR include temperature compensation for magnet drift?

No, the DRV5055Z3QDBZR does not include sensitivity temperature compensation (STC = 0%/°C). Unlike A-versions, the Z3 variant preserves the native thermal drift characteristics of the magnet - making it appropriate for applications using temperature-stable magnets or where deterministic, uncompensated output behavior is required for calibration traceability.

What package type and pin configuration does the DRV5055Z3QDBZR use?

The DRV5055Z3QDBZR uses the SOT-23 (DBZ) 3-pin surface-mount package with 2.92 mm × 2.37 mm footprint. Pin 1 is VCC, Pin 2 is OUT, and Pin 3 is GND - matching the standard DBZ top-view layout. This compact package supports high-density PCB assembly and is compatible with reflow soldering profiles per JEDEC J-STD-020.

How does the ratiometric architecture of the DRV5055Z3QDBZR improve system accuracy?

The ratiometric architecture of the DRV5055Z3QDBZR causes both quiescent voltage (VCC/2) and sensitivity to scale linearly with supply voltage. When the external ADC uses the same VCC as its reference voltage, supply tolerance variations cancel out - eliminating a major source of absolute measurement error. This allows the DRV5055Z3QDBZR to maintain consistent digital readings across ±10% VCC variation without calibration.

Can the DRV5055Z3QDBZR be used for wire-break detection in safety-critical applications?

Yes, the DRV5055Z3QDBZR supports wire-break detection via external pull-up resistor (20–100 kΩ) on the OUT pin. Under normal operation, output stays within 0.2 V to VCC – 0.2 V. If VCC or GND wiring opens or shorts to OUT, the output saturates near GND or VCC - enabling fault detection by monitoring for voltages within 150 mV of either rail. This method is documented in TI's DRV5055 application notes and validated for industrial safety functions.