Semiconductor pressure transducer - has pressure detection chip on base in housing on substrate carrying resistor for highly accurate temp. compensation

摘要

The semiconducting pressure transducer includes a pressure detection chip (2A) with a membrane (5) for converting pressure into mechanical tension, a strain meter for converting the tension into an electrical signal and an integrated circuit for amplifying the output signal and performing temp. compensation. The chip and its base (6A) are enclosed and encapsulated in a housing (17) with an opening (21). The housing is positioned on a substrate (18) with a resistor (15A) on its reverse side which is used to adjust the electrical characteristics of the chip. ADVANTAGE - Small, low-cost, enables highly accurate temp. compensation.