1 Features
1• AEC-Q100 qualified for automotive applications
– Temperature grade 0: –40°C to 150°C
• PWM-output linear Hall effect magnetic sensor
• Operates from 3.3-V and 5-V power supplies
• 2-kHz clock output with 50% quiescent duty cycle
• Magnetic sensitivity options (at VCC = 5 V):
– A1: 2%D/mT, ±21-mT range
– A2: 1%D/mT, ±42-mT range
– A3: 0.5%D/mT, ±84-mT range
– A4: 0.25%D/mT, ±168-mT range
• Open-drain output with 20-mA sink capability
• Compensation for magnet temperature drift
• Industry standard package:
– Surface-mount SOT-23

2 Applications
• Automotive position sensing
• Brake, acceleration, clutch pedals
• Torque sensors, gear shifters
• Throttle position, height leveling
• Powertrain and transmission components
• Absolute angle encoding
• Current sensing

3 Description
The DRV5057-Q1 is a linear Hall effect sensor that
responds proportionally to magnetic flux density. The
device can be used for accurate position sensing in a
wide range of applications.
The device operates from 3.3-V or 5-V power
supplies. When no magnetic field is present, the
output produces a clock with a 50% duty cycle. The
output duty cycle changes linearly with the applied
magnetic flux density, and four sensitivity options
maximize the output dynamic range based on the
required sensing range. North and south magnetic
poles produce unique outputs. The typical pulse-width
modulation (PWM) carrier frequency is 2 kHz.
Magnetic flux perpendicular to the top of the package
is sensed, and the two package options provide
different sensing directions.
Because the PWM signal is based on edge-to-edge
timing, signal integrity is maintained in the presence
of voltage noise or ground potential mismatch. This
signal is suitable for distance transmission in noisy
environments, and the always-present clock allows
the system controller to confirm there are good
interconnects. Additionally, the device features
magnet temperature compensation to counteract how
magnets drift for linear performance across a wide
–40°C to +150°C temperature range.