发明名称 |
INTEGRATING A/D CONVERTER |
摘要 |
In an integrating A/D converter, first and second reference voltage inputs (18, 20) alternatingly connect through a reference voltage switch (16, 16′) via a first reference resistor (Rref) to an inverting input (122) of an integrator (12). A comparator (22) connected downstream of the integrator (12) compares a test voltage applied to its test voltage input (221) with a comparator reference voltage applied to its reference voltage input (222). This input (221) is connected to- the output (126) of the integrator (12). A control device (40) actuates the first reference voltage switch (16, 16′) in a pulsed manner and measures the time intervals between the individual switching processes. An inverter (24) inverting a measuring voltage (UM) and a first heating resistor (RMH) coupled thermally with a measuring resistor (RM), are connected in series between the measuring voltage input (14) and the output of the first reference voltage switch (16, 16′). |
申请公布号 |
EP2826147(A1) |
申请公布日期 |
2015.01.21 |
申请号 |
EP20130705721 |
申请日期 |
2013.02.15 |
申请人 |
SARTORIUS LAB INSTRUMENTS GMBH & CO. KG |
发明人 |
FELDOTTE, HEINRICH;HOLST, HEYKO |
分类号 |
H03M1/08;G01R19/00;H03M1/50 |
主分类号 |
H03M1/08 |
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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