发明名称 |
AD conversion circuit and error correcting method |
摘要 |
In a microcomputer 10 which converts an analog signal Vin into digital data and corrects an error of the digital data, a voltage variationΔVcc is calculated on the basis of a first conversion value obtained by AD-converting a reference voltage Vref by an AD converter 15 in a state that a standard power source voltage including no voltage variation is supplied to the AD converter 15 and a second conversion value obtained by AD-converting the reference voltage Vref by the AD converting section in a state that a power source voltage for the ordinary operation is supplied to the AD converter 15. The digital data produced by the AD converter 15 by AD-converting the analog signal Vin is corrected using the calculated voltage variationΔVcc.
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申请公布号 |
US8421657(B2) |
申请公布日期 |
2013.04.16 |
申请号 |
US201113075337 |
申请日期 |
2011.03.30 |
申请人 |
IKEDA ATSUSHI;OCHI NOBUCHIKA;HONDA MOTOR CO., LTD. |
发明人 |
IKEDA ATSUSHI;OCHI NOBUCHIKA |
分类号 |
H03M1/06 |
主分类号 |
H03M1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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