Invention Application
- Patent Title: ELECTRONIC CONTROL UNIT
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Application No.: US15410887Application Date: 2017-01-20
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Publication No.: US20170310337A1Publication Date: 2017-10-26
- Inventor: Satoshi ICHIKAWA
- Applicant: DENSO CORPORATION
- Priority: JP2016-85203 20160421
- Main IPC: H03M1/76
- IPC: H03M1/76 ; H03M1/68 ; H03M1/78 ; H03M1/48

Abstract:
An electronic control unit includes a pair of D/A conversion circuits, which performs D/A conversion processing of a pair of digital data and outputs a pair of analog signals. Each of the pair of D/A conversion circuits performs the D/A conversion processing by splitting input digital data into more-significant digital data and less-significant digital data. More-significant D/A conversion part performs analog conversion processing in accordance with the more-significant digital data by using an element string circuit, which outputs split voltages by splitting predetermined reference voltages. The more-significant conversion circuits output a maximum value and a minimum value in absolute voltage ranges, which are different from each other, in accordance with the more-significant digital data. Less-significant conversion parts perform analog conversion processing in accordance with less-significant digital data by using the maximum value and the minimum value of the different absolute voltage ranges, which are outputted from the more-significant D/A conversion parts, as reference voltages. The element string circuit is shared by the pair of D/A conversion circuits.
Information query
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