GZP6832A: Amplified Pressure Sensor, Gauge Pressure Type

Product Description

The GZP6832A pressure sensor, developed by Sencoch for automotive electronics, adopts SOP8 sealing. Its integrated signal conditioning chip digitally compensates for offsets in the MEMS pressure chip’s output. Using the supply voltage as a reference, it generates a calibrated, temperature-compensated standard voltage signal.

The GZP6832A pressure sensor is compact and easy to install, and its output signal can be calibrated to meet user requirements.The GZP6832A pressure sensor is small in size and easy to install, and the output signal can be calibrated according to user requirements.

Function Description

This product is made with advanced micro-electromechanical principles, the key technology is the silicon piezoresistive effect based MEMS pressure sensor chip and high performance signal conditioning AISC chip, the silicon micro-piezoresistive MEMS pressure sensor chip is through the Wheatstone bridge composed of four strain sensitive resistors. The output signal is amplified, temperature compensated and linearised by the ASIC chip, and the linearity of the transfer function and temperature compensation is achieved by the digital processing circuitry in the ASIC. High accurate pressure measurement over the full operating temperature range is achieved by a polynomial compensation algorithm and a multi-point pressure calibration technique at multiple temperatures. The transfer function of the pressure sensor is created from the following parameters:

• Minimum and maximum rated pressure
• Output voltage at minimum and maximum rated pressure
• Clamp voltage

All parameters required for the complete calibration algorithm (e.g. offset, gain, temperature coefficients of offset and gain, and linearity parameters) are determined after calibration and stored in the E²PROM inside the ASIC.