Patent ID: 9021689
Filing Date: 2015-05-05
Classification: G01L,H01L,Y10T

Abstract:
1. A method of forming a dual port pressure sensor, comprising: molding an encapsulant around a lead frame including a flag, leads, and fingers, to have: forming a first opening through the flag that is smaller than the first opening in the encapsulant; forming a second opening through the flag; attaching a dual port on the top side of the dual port pressure sensor to couple a first port of the dual port to the first top cavity and a second port of the dual port to the second top cavity; attaching a pressure sensor transducer to the bottom surface of the flag and covering the first opening in the flag; attaching an integrated circuit to the bottom surface of the flag, spaced from the second opening in the flag, electrically coupling the fingers and the pressure sensor transducer to the integrated circuit; and attaching a cap to the bottom cavity on the bottom side of the dual port pressure sensor; wherein the first opening through the flag is aligned to the first opening in the encapsulant; and wherein the second opening through the flag is aligned to the second opening in the encapsulant.