GZP6847A: Amplified Pressure Sensor, Gauge Pressure Type

Sensor Attribute	Attribute Value
Product Category	Board Mount Pressure Sensors
Product Series	GZP6847A
Pressure Type	Gauge Pressure (Postive and Negative Pressure)
Pressure Range	-100…0～1…1500kPa (Multiple range)
Output Type	Analog Amplified Voltage
Output Value	0.5～4.5V or 0.2～2.7V or Customized by request
Accuracy	±1%FSS
Supply Voltage	5Vdc or 3.3Vdc
Temperature Compensated	0～60°C
Operating Temperature	-30 to 105°C
Mounting Style	THT or Manual Soldering
Measured Media	Non-corrosive gases
Package/SPQ	Tube/38pcs

Product Description

The GZP6847A pressure sensor is a state-of-the-art MEMS pressure sensor designed particularly for wide pressure measurement application in medical&health care, industry & automation, household appliances and consumer electronics with specific pressure range. It is composed of a silicon piezoresistive pressure sensing chip and a signal conditioning integrated circuit. The initial signal from the sensing chip is amplified, temperature compensated, calibrated and finally converted to a high level analog output voltage that is proportional to the applied pressure.

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.