发明名称 |
LOW RESOLUTION, HIGH LINEARITY DIGITAL-TO-ANALOG CONVERTER WITHOUT TRIM |
摘要 |
A digital-to-analog (D/A) converter eliminates matching requirements and does not generate harmonics or noise. The D/A converter has an array of injectors for converting an input word to an analog voltage. A plurality of clocked switches discharge the injector array and the feedback path when switched into a first phase position and transfer the injector signal across the feedback path to the output of the D/A converter when switched to a second phase position. The conversion period, the time in which the digital input word is converted to an analog output voltage, is divided into N-1 subperiods. Each injector is enabled once or not at all for each subperiod such that the weighted signal injected during a single conversion period is constant and such that all the injectors in the array contribute an equal amount of signal during a conversion period.
|
申请公布号 |
WO9519068(A1) |
申请公布日期 |
1995.07.13 |
申请号 |
WO1994US13263 |
申请日期 |
1994.12.30 |
申请人 |
LEVEL ONE COMMUNICATIONS, INC. |
发明人 |
EVERITT, JAMES, W.;TAKATORI, HIROSHI |
分类号 |
H03M1/06;H03M1/82;(IPC1-7):H03M1/06;H03M1/74 |
主分类号 |
H03M1/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|