PRESSURE SENSORS

The MLX90210 is a discrete micromachined Pressure sensor IC suitable for pressure ranges Between 0 to 1.0 Bar. The pressure medium must be dry and non-corrosive, such as air. The circuit is a piezoresistive bridge which is realized in silicon through a special micromachining process. As pressure is applied to the bridge, a differential voltage change is seen across the Vout pins, while a bias voltage is applied to the V^exc pins.

The Smart Pressure Device SPD series of pressure sensors are silicon based and encapsulated in modified plastic Dual In Line packages, to accommodate six pins for through-board printed circuit mounting. The sensors come in two distinct types: Gauge and absolute. The gauge type merely measures the pressure with respect to the atmospheric pressure. The absolute type contains a reference vacuum chamber, which is formed on the die during manufacturing.