Title:
センサ回路
Document Type and Number:
Japanese Patent JP4244886
Kind Code:
B2
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.
Inventors:
Kazuyoshi Nagase
Application Number:
JP2004252282A
Publication Date:
March 25, 2009
Filing Date:
August 31, 2004
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01D3/028; G01D18/00; G01L9/00; G01P15/12
Domestic Patent References:
| JP2002350256A | ||||
| JP11030530A | ||||
| JP6029555A | ||||
| JP2002288046A |
Attorney, Agent or Firm:
Tsuyoshi Sato
Kiyoshi Ogawa
Kiyoshi Ogawa