发明名称 |
BANDPASS SIGMA-DELTA ANALOGUE/DIGITAL CONVERTER FOR CONVERTING AN IF SIGNAL |
摘要 |
The analog-to-digital converter (1) has two bandpass filters (2, 3) connected in cascade and each having a summing stage at its input to apply feedback from a quantizer (4) via digital-to-analog converters (DACs). The first DAC (5) receives its feedback via a dynamic element matching (DEM) control module (7) which provides a second-order noise-shaping characteristic and linearizes the converter. The second DAC (6) receives its feedback signal directly from the quantizer. Preferably the band-pass filters are second-order types implemented using switched capacitors. |
申请公布号 |
EP2102987(B1) |
申请公布日期 |
2017.04.05 |
申请号 |
EP20070821237 |
申请日期 |
2007.10.12 |
申请人 |
Robert Bosch GmbH |
发明人 |
MAEDER, Heinz;LEHR, Carsten;NYENHUIS, Detlev |
分类号 |
H03M3/04 |
主分类号 |
H03M3/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|