Patent ID: 8179121

Claim:
A method of generating a two-wire output for a bridge sensor transducer, comprising the steps of: accepting a first constant current from an internal electronic piezoelectric (IEPE) compatible two-wire current source on a two-wire line accessible at the exterior of a housing for the transducer; and, within the housing for the transducer: converting said constant current to an excitation voltage or current using said constant current on said two-wire through a conversion circuit line; supplying said excitation voltage or current to a bridge sensor circuit, said bridge sensor circuit including at least one micro electro-mechanical systems (MEMS) sensing element; outputting, from said bridge sensor circuit and responsive to said excitation voltage or current, first and second bridge sensor output signals; generating through a conversion circuit a data signal combining said first and second bridge sensor output signals; and, outputting, on said two-wire line, said data signal.