Time interleaved analog-digital converter and a method for driving the same
US4968988A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Nov 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A time interleaved analog-to-digital converter includes a plurality of analog-to-digital subconverters which are monolithically integrated in an array on a semiconductor chip and are sequentially activated into sampling and conversion operation in the time interleaved fashion for converting a received analog signal into a digital form. If an analog-to-digital subconverter in the i-th row of the j-th column of the array is activated at one sampling time in the sequential activation, an analog-to-digital subconverter in the k-th row of the l-th column is subsequently activated, where i, k, j and l bear the relations expressed by: EQU i-2.ltoreq.k.ltoreq.i+2 and j-2.ltoreq.l.ltoreq.j+2. The sequential activation of the analog-to-digital subconverter array assures that the analog-to-digital subconverters disposed in physical proximity to one another are successively activated, thus greatly improving the differential linearity of the analog-to-digital converter characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.