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PWM 输出提高传感器信号调理器

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摘要: 本文介绍了压阻式传感器具有非线性误差,温度过高。此错误可以通过使用传输传感器信息的格言传感器信号调理器和发射器内传感器的固有的重复性局限性的 1%降至。一种传输方法调节成比例的输出使用脉宽调制 (PWM)。像电流环的对应,PWM 输出有良好抗扰度,适合于传输距离越长。MAX1452 传感器信号调理器被特色。

Maxim > App Notes > Amplifier and Comparator Circuits Automotive Sensors
Keywords: silicon piezoresistive sensors, PRTs, pressure-sensing applications, Wheatstone Bridge, sensor-signal conditioners, ratiometric Jan 24, 2003
output, current-loop output

APPLICATION NOTE 1860
PWM Outputs Enhance Sensor Signal Conditioners


Abstract:This application note explains that piezoresistive sensors have nonlinear error over temperature. This error can be
reduced to within 1% of the sensor's inherent repeatability limitations by using a Maxim sensor signal conditioner and transmitter
to transmit sensor information. One transmission method modulates the ratiometric output using pulse-width modulation (PWM).
Like its current-loop counterpart, the PWM output has good noise immunity and is suitabl……
PWM 输出提高传感器信号调理器
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