发明公开
EP1135860A1 SCHALTUNGSANORDNUNG ZUM TESTEN EINES A/D-WANDLERS FÜR SICHERHEITSKRITISCHE ANWENDUNGEN
有权
CIRCUIT FOR TESTING A / D转换器，用于安全关键
- 专利标题： SCHALTUNGSANORDNUNG ZUM TESTEN EINES A/D-WANDLERS FÜR SICHERHEITSKRITISCHE ANWENDUNGEN
- 专利标题（英）： Circuit configuration for testing an a/d converter for applications that are critical in terms of safety
- 专利标题（中）： CIRCUIT FOR TESTING A / D转换器，用于安全关键
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申请号： EP99961021.5申请日： 1999-11-29
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公开(公告)号： EP1135860A1公开(公告)日： 2001-09-26
- 发明人: OEHLER, Peter , FEY, Wolfgang
- 申请人： Continental Teves AG & Co. oHG
- 申请人地址： Guerickestrasse 7 60488 Frankfurt DE
- 专利权人： Continental Teves AG & Co. oHG
- 当前专利权人： Continental Teves AG & Co. oHG
- 当前专利权人地址： Guerickestrasse 7 60488 Frankfurt DE
- 优先权： DE19855743 19981203; DE19912766 19990322
- 国际公布： WO0033465 20000608
- 主分类号： H03M1/10
- IPC分类号： H03M1/10
摘要：
The invention relates to a circuit configuration with an A/D converter, for applications that are critical in terms of safety. The inventive circuit configuration is especially characterised by a ramp signal generator (11) for generating a ramp voltage which is delivered to the input of the A/D converter (10), and by a test circuit (12) for activating a test cycle. The test cycle comprises a first run of the ramp, with which a reference measurement of the ramp signal generator is carried out for compensating component tolerances, and a second run of the ramp, in which an error signal (F) is output if the value that is calculated for a transmission characteristic of the A/D converter lies outside of a predetermined tolerance range of the measured value of the transmission characteristic.
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