A/d conversion device provided with a/d converter |
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| 申请号 | JP25102788 | 申请日 | 1988-10-06 | 公开(公告)号 | JPH01126826A | 公开(公告)日 | 1989-05-18 |
| 申请人 | Ant Nachrichtentech Gmbh; | 发明人 | YURUGEN BUERUMUUTO; | ||||
| 摘要 | PURPOSE: To prevent the dynamic range of an A/D converter from being limited by reversely extending the analog compression of a compressor connected to the prestage of an A/D converter immediately after A/D conversion. CONSTITUTION: The A/D conversion device is constituted of connecting an amplifier V for an analog signal, an analog compressor 1, an A/D converter 2, and a digital extender 3 in series. An analog signal to be supplied to the amplifier V has a dynamic characteristic exceeding the allowable dynamic range of the A/D converter 2 and the compressor 1 reduces the dynamic range of the A/D converter 2 to an allowable level. The extender 3 is directly connected to the A/D converter 2 on a signal line and allowed to release the analog compression of the compressor 1. Consequently a digital signal having the whole dynamic range of an analog signal supplied from the amplifier V is obtained from the output side of the extender 3. COPYRIGHT: (C)1989,JPO |
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