TMAG5253BA4中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Industry-leading low power:

– Supply voltage, VCC: 1.65 V – 3.6 V

– Shutdown current: < 20 nA (1.8 V at 25°C)

– Active current: 2 mA (1.8 V at 25°C)

– Average current: <10 μA at 100-Hz duty cycling

? Dedicated enable pin

? Fast power-on time: < 25 μs

? Ratiometric analog output proportional to VCC

? High impedance output during shutdown mode

? Low-noise output with ±1-mA drive

? Bipolar sensitivity option to support both positive

and negative magnetic fields

? Magnetic sensitivity range options:

– A1: ±20-mT Range

– A2: ±40-mT Range

– A3: ±80-mT Range

– A4: ±160-mT Range

? Sensitivity compensation to support temperature

drift of Neodymium magnet

? Ultra-small X2SON 4-pin package: 1.54 mm2

? Wide operating temperature range: –40°C to

125°C

2 Applications

? Gaming controller & peripherals

? Magnetic proximity sensor

? Mobile robot motor control

? Cordless power tools

? Vacuum robots

? Drone payload control

3 Description

The TMAG5253 is a low-power linear Hall effect

sensor that responds proportionally to magnetic flux

density. The device features an enable pin to enter

ultra-low power (nA) shutdown mode. The TMAG5253

features a fast start-up time (< 25 μs) designed for

low-power position sensing applications. The device

is available in an industry-leading 1.54-mm2 ultrasmall

footprint for space-constrained applications. The

device has a wide supply range and can operate from

1.65 V to 3.6 V.

Magnetic flux perpendicular to the top of the package

is sensed by the device and the TMAG5253 is

available in bipolar sensitivity polarity option, where

the north and south magnetic poles produce unique

output voltages. The output changes linearly with

the applied magnetic flux density, and four sensitivity

options enable maximal output voltage swing based

on the required sensing range.

The device uses a ratiometric architecture that can

eliminate error from VCC tolerance when the external

analog-to-digital converter (ADC) uses the same VCC

for its reference. Additionally, the device features

magnet temperature compensation to counteract the

magnetic sensitivity drifts across a wide –40°C to

125°C temperature range. The device also features

the ability to place the output in a high impedance

state during shutdown mode. This enables multiple

devices to be connected to a single ADC.