发明名称 |
Device and method for generating digital signals each coding a value of an analog signal |
摘要 |
A number P of single analog inputs receive an analog signal having a frequency F from a sensor electrode. A single digital output sequentially generates a number P of first digital signals coding the amplitude values of the analog signal. A first multiplexer with a number M of multiple analog inputs with a number N of single analog inputs receives the analog signal and outputs the analog signal on a multiple analog output with a number N of second single analog outputs. A phase sensitive amplifier with a number N of single analog inputs and a number N of single analog outputs is connected to the second single analog outputs of the fist multiplexer. A second multiplexer with a number N of single analog inputs and a single analog output is connected to the single analog outputs of the phase sensitive amplifier. An analog to digital converter with a single analog input tied to the single analog output of the second multiplexer and a single digital output tied to the single digital output sequentially generates the number P of first digital signals coding the amplitude values of the analog signal.
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申请公布号 |
US6836230(B2) |
申请公布日期 |
2004.12.28 |
申请号 |
US20030421380 |
申请日期 |
2003.04.22 |
申请人 |
STMICROELECTRONICS S.A.;IDEX ASA |
发明人 |
LE PAILLEUR LAURENT;RIISNAES KNUT HOVRING;VERMESAN OVIDIU |
分类号 |
G06K9/00;H03M1/12;(IPC1-7):H03M1/12 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
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