发明名称 |
ENHANCED RESOLUTION SUCCESSIVE-APPROXIMATION REGISTER ANALOG-TO-DIGITAL CONVERTER AND METHOD |
摘要 |
An enhanced resolution successive-approximation register (SAR) analog-to-digital converter (ADC) is provided that includes a digital-to-analog converter (DAC), a comparator and enhanced resolution SAR control logic. The DAC includes analog circuitry that is configured to convert an M-bit digital input to an analog output. The comparator includes a plurality of coupling capacitors. The enhanced resolution SAR control logic is configured to generate an M-bit approximation of an input voltage and to store a residue voltage in at least one of the coupling capacitors. The residue voltage represents a difference between the input voltage and the M-bit approximation of the input voltage. The enhanced resolution SAR control logic is further configured to generate an N-bit approximation of the input voltage based on the stored residue voltage, where N>M. |
申请公布号 |
US2016056831(A1) |
申请公布日期 |
2016.02.25 |
申请号 |
US201414462916 |
申请日期 |
2014.08.19 |
申请人 |
Texas Instruments Incorporated |
发明人 |
Park Joonsung;Nagaraj Krishnaswamy;Ash Mikel |
分类号 |
H03M1/20;H03M1/46 |
主分类号 |
H03M1/20 |
代理机构 |
|
代理人 |
|
主权项 |
1. (canceled) |
地址 |
Dallas TX US |