Texas Instruments DRV5057A2QDBZR

Overview

DRV5057A2QDBZR from Texas Instruments is a linear Hall effect sensor with PWM output, designed for precise analog magnetic field measurement in industrial and consumer systems. It operates from 3.3 V or 5 V, delivers 2-kHz carrier frequency with 50% quiescent duty cycle at zero field, and provides 1%D/mT sensitivity (±42 mT range) for high-resolution position sensing in robotic joints and appliance actuators.

For engineers reviewing the DRV5057A2QDBZR datasheet, DRV5057A2QDBZR pinout, DRV5057A2QDBZR application, or DRV5057A2QDBZR equivalent, this device supports robust magnetic sensing in noisy environments via edge-timing–based PWM, enables temperature-compensated linear response across –40°C to +125°C, and integrates open-drain output with 20-mA sink capability for direct microcontroller interface.

Technical Context

The DRV5057A2QDBZR implements a fully integrated signal chain including Hall element biasing, offset cancellation, precision amplification, and magnet temperature compensation optimized for neodymium magnets (0.12%/°C). Its PWM output encodes magnetic flux density as duty cycle variation between 8% and 92%, maintaining linearity over ±42 mT at 5 V supply.

It uses a 3-pin SOT-23 (DBZ) package with top-side magnetic sensitivity perpendicular to the PCB, and features 0.9 ms power-on time, ±0.1%D jitter, and 6 µA typical quiescent current drift over lifetime - all validated under recommended operating conditions of 4.5–5.5 V and –40°C to +125°C ambient.

Key Specifications

Pinout & Package

SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, top-side magnetic sensing axis.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DRV5057A2QDBZR, DRV5055A2QDBZR offers simpler analog interfacing but sacrifices noise immunity and built-in drift correction, while TMAG5170AHQDBTR adds spatial awareness and diagnostics at the cost of increased firmware complexity and absence of automatic magnet TC.

Availability

DRV5057A2QDBZR is available at Aetrix Electronics and suitable for industrial robotics, home appliance actuation, and automotive pedal monitoring requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for DRV5057A2QDBZR 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 DRV5057 product line delivers robust, temperature-compensated linear Hall sensors for contactless position and current sensing in harsh environments - engineered specifically for industrial, automotive, and medical applications demanding high reliability and signal integrity.

FAQ

What is the magnetic sensing direction for DRV5057A2QDBZR?

The DRV5057A2QDBZR senses magnetic flux perpendicular to the top surface of its SOT-23 package. A south pole near the marked side produces positive field values (increasing duty cycle), while a north pole yields negative values (decreasing duty cycle). This orientation is fixed per the DBZ package mechanical drawing and cannot be reconfigured via pin strapping or register settings.

Does DRV5057A2QDBZR require an external pull-up resistor on the OUT pin?

Yes, DRV5057A2QDBZR features an open-drain output and requires an external pull-up resistor to a logic-compatible voltage (e.g., 3.3 V or 5 V). The value is typically 4.7 kΩ to 10 kΩ; lower values improve rise time but increase power consumption, especially at 2 kHz switching. No internal pull-up is present.

How does magnet temperature compensation work in DRV5057A2QDBZR?

DRV5057A2QDBZR applies active sensitivity scaling at 0.12%/°C to counteract the intrinsic flux loss of neodymium magnets with rising temperature. This compensation is factory-trimmed and operates continuously across –40°C to +125°C, reducing total linearity error from >±3% to ≤±1% over temperature without user intervention.

Can DRV5057A2QDBZR operate from a 3.3-V supply?

Yes, DRV5057A2QDBZR supports 3.3-V operation within the 3.0–3.63 V range, delivering 0.6%D/mT sensitivity and ±25 mT effective range. However, the A2 variant's specified ±42 mT range and 1%D/mT sensitivity apply only at 5 V; performance degrades predictably below 4.5 V due to internal biasing thresholds.

What is the maximum cable length supported by DRV5057A2QDBZR's PWM output?

DRV5057A2QDBZR's edge-timing–based PWM output maintains integrity over 10+ meters of twisted-pair cable in industrial noise environments (≤30 V/m), provided the OUT line uses proper termination (e.g., 100 Ω series resistor at source) and the receiving MCU employs capture-timer decoding. Signal degradation manifests as increased jitter, not amplitude loss.