Physical quantity sensor with trimming function

Details Physical quantity sensor with trimming function Physical quantity sensor with trimming function

2007-03-06

2007-03-06

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Sensor or transducer

C702S085000

Reexamination Certificate

active

11214051

ABSTRACT:
When a voltage applied to an output terminal exceeds a power source voltage to be supplied during an ordinary operation state, a reset signal turns into L level and the operation mode of a sensor goes into a trimming operation mode. The voltage entered into the output terminal is changed in a voltage range higher that the power source voltage to input trimming data with a data signal having L or H level. The entered trimming data is temporarily held by a latch and then written into a memory in response to a write voltage applied to a power source terminal in a write mode. Then, the trimming data held by the latch or the trimming data stored in the memory can be read out as a change in the sink current of the output terminal when a read mode is set.

REFERENCES:
patent: 4303984 (1981-12-01), Houvig
patent: 6324482 (2001-11-01), Nakagaki et al.
patent: 6374191 (2002-04-01), Tsuchiya et al.
patent: 6518880 (2003-02-01), Tanizawa
patent: 6718275 (2004-04-01), Nagase et al.
patent: 11-30530 (1999-02-01), None
patent: 2002-116051 (2002-04-01), None
patent: 2002-350256 (2002-12-01), None

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