1 Features

• Configurable power modes including:

– 2.1mA active mode current

– 0.45μA wake-up and sleep mode current

– 40nA sleep mode current

• Selectable linear magnetic range at X, Y, or Z axis:

– TMAG3001A1 sample: ±40mT, ±80mT

– TMAG3001A2: ±120mT, ±240mT

• Integrated angle calculation with gain and offset

adjustment to support off-axis placement

• Conversion trigger by I2C or dedicated INT pin

• Interrupt signal based on

– Magnetic or Angle threshold crossing

– Change from previous measurement

• Configurable 3D or angle switch mode

• Optimized for low noise, supporting up to 20kSPS

single axis conversion rate

• I2C interface with cyclic redundancy check (CRC):

– Maximum 1MHz I2C clock speed

– ADDR pin enables four devices on the same

bus

• Integrated temperature compensation to support

multiple magnet types

• Built-in temperature sensor

• 1.65V to 3.6V supply voltage VCC range

• Operating temperature range: –40°C to 125°C

2 Applications

• Electronic smart locks

• Door and window sensors

• Magnetic proximity sensors

• Mobile robot motor control

• Smartwatches

• Actuators

• Position sensors

• Foldable smartphones and tablets

• Joystick and gaming controllers

3 Description

The TMAG3001 is a low-power linear 3D Hall-effect

sensor designed for a wide range of industrial

and personal electronics applications. This device

integrates three independent Hall-effect sensors in

the X, Y, and Z axes. A precision analog signalchain

along with an integrated 12-bit ADC digitizes

the measured analog magnetic field values. The I2C

interface, while supporting multiple operating VCC

ranges, allows seamless data communication with

low-voltage microcontrollers.

The TMAG3001 can be configured through the I2C

interface to enable any combination of magnetic

axes and temperature measurements. Additionally,

the device can be configured to various power

options (including wake-up and sleep mode) allowing

designers to optimize system power consumption

based on their system-level needs. Multiple sensor

conversion schemes and I2C read frames help

optimize throughput and accuracy. A dedicated INT

pin can act as a system interrupt during low power

wake-up and sleep mode, and can also be used by

a microcontroller to trigger a new sensor conversion.

The device also features a configurable low power

switch mode for magnetic or angle measurements.

An integrated angle calculation engine (CORDIC)

provides full 360° angular position information for both

on-axis and off-axis angle measurement topologies.

The angle calculation is performed using two

user-selected magnetic axes. The device features

magnetic gain and offset correction to mitigate the

impact of system mechanical error sources.

The TMAG3001 features an ADDR pin that can be

used to have four different I2C addresses. Each

orderable part can be configured to select one of two

magnetic field ranges that suits the magnet strength

and component placement during system calibration.

The device performs consistently across a wide

ambient temperature range of –40°C to 125°C.