Ratiometric pressure sensors

The voltage or rational signal is a standard signal for automotive applications.

The main advantage of the rational signal is to be energy efficient and allow a simple and economical realization of sensors.

The live signal is typically in the 0..5 V standard with three-wire transmission. It is defined as rational because the measurement signal is dependent on the power voltage: the value of the measured signal is in fact given by the ratio (made by the control equipment) between the measured voltage and the power voltage.

Advantages of rational sensors:

• Energy efficient signals
• Automotive Standards
• Sensors generally cheaper than the current solution
• Simple but not always available regulators

Disadvantages of rational sensors:

• In the industrial field, it is difficult to find compatible
• Equipment: three-wire wiring typically reduced wiring distances