| 摘要 |
1516001 Analogue to digital converter SONY CORP 30 April 1976 [1 May 1975] 17597/76 Heading H3H In an a#d converter having a first coarse stage 12 and a second fine stage 13, each comprising a plurality of parallel comparators, the voltage reference levels of the fine stage cover a larger range than, and are offset with respect to, the voltage step between references of the coarse converter. The m.s. hit of the fine converter and the b.s. hit of the coarse converter are given the same weight when the two converter output are digitally added to give the final output. In modifications there may be more than two serial stages, an amplifier may be inserted between stages, and bias added at the reconstructed analogue subtraction point 18. |
