TLE4998P8D数据手册传感器变送器的磁性传感器-开关（固态）规格书PDF

描述 Description

The linear Hall IC TLE4998P8D has been designed specifically to meet the requirements of highly accurate angle and position detection. The sensor provides a digital PWM signal, which is well suited for direct decoding by any unit measuring a duty cycle of a rectangular signal (usually a timer/capture unit in a microcontroller). The output stage is an open-drain driver pulling the output pin to low only. Therefore, the high level needs to be obtained by an external pull-up resistor. This output type has the advantage that the receiver may use an even lower supply voltage (e.g. 3.3 V). In this case the pull-up resistor must be connected to the given receiver supply.

特性 Features

• Integration of two individual programmable Linear Hall sensor IC’s with PWM open-drain output signal
• 20-bit Digital Signal Processing
• Digital temperature and stress compensation
• 12-bit overall resolution
• Operating automotive temperature range -40°C to 125°C
• Minimal drift of output signal over temperature and lifetime
• Programmable parameters stored in EEPROM with single bit error correction:
• PWM output frequency
• Magnetic range, sensitivity (gain), offset, and polarity of the output slope
• Bandwidth
• Clamping levels
• Customer temperature compensation coefficients for all common magnets

• Re-programmable until memory lock
• Supply voltage 4.5 - 5.5 V (4.1 - 16 V extended range)
• Configurable magnetic range: ±50 mT, ±100 mT, or ±200 mT
• Reverse-polarity and overvoltage protection for all pins
• Output short-circuit protection
• On-board diagnostics (overvoltage, EEPROM error)
• Digital readout of the magnetic field and internal temperature in calibration mode
• Programming and operation of multiple sensors with common power supply
• Two-point calibration of magnetic transfer function without iteration steps


优势:

应用 Application

• Robust replacement of potentiometers: No mechanical abrasion, resistant to humidity, temperature, pollution and vibration
• Linear and angular position sensing in automotive and industrial applications with highest accuracy requirements
• Suited for safety applications such as pedal position, throttle position and steering torque sensing

简介

TLE4998P8D属于传感器变送器的磁性传感器-开关（固态）。由制造生产的TLE4998P8D磁性传感器 - 开关（固态）该系列产品使用固态技术来检测是否存在超过某个特定幅度和/或标示的磁场，并提供指示是否存在此类磁场的双态输出。它们与磁簧开关以及线性或罗盘型固态器件不同，前者通过使用移动机械部件来提供类似的功能，后者提供指示所施加磁场的强度和/或方向的可变输出。