Invention Grant
US08490496B2 Multi range pressure sensor apparatus and method utilizing a single sense die and multiple signal paths 有权
多范围压力传感器装置和方法利用单个感测管芯和多个信号路径

Multi range pressure sensor apparatus and method utilizing a single sense die and multiple signal paths
Abstract:
A multi-range pressure sensor apparatus and method that provide multiple signal paths for detecting a broad range of pressures with a high accuracy. A pressure transducer can be configured to include the use of a pressure sense die with piezoresistive elements integrated into the sensor die and in a Wheatstone bridge configuration. A sensed output signal from the sense die can be transferred to one or more amplifier circuits. A programmable compensation circuit can be utilized to multiplex different amplified output signals from each of the amplifier circuits and to provide a digital output. A memory associated with the programmable compensation circuit provides separate compensations, which are stored for each of the different signal paths and removes errors due to amplifier gain and offset.
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