| 发明名称 |
Analog-to-digital converter |
| 摘要 |
A delta sigma analog-to-digital converter (ADC) providing optimized performance and energy consumption. In one embodiment, a delta-sigma ADC includes a loop filter and a multi-bit quantizer. The multi-bit quantizer is coupled to the loop filter. The quantizer includes a counter, a reference voltage generator, and a comparator. The counter is configured to provide a multi-bit output value that estimates an output of the loop filter. The reference voltage generator is configured to generate a reference voltage ramp based on the output value of the counter. The comparator is coupled to the reference voltage generator to compare the reference voltage ramp to output of the loop filter. |
| 申请公布号 |
US9240801(B2) |
申请公布日期 |
2016.01.19 |
| 申请号 |
US201414211233 |
申请日期 |
2014.03.14 |
| 申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Marienborg Jan-Tore;Arndt Gregory;Dannenberger Stefan |
| 分类号 |
H03M3/00;H03M1/00;H03M1/12 |
主分类号 |
H03M3/00 |
| 代理机构 |
|
代理人 |
Neerings Ronald O.;Cimino Frank D. |
| 主权项 |
1. A delta-sigma analog-to-digital converter (ADC), comprising:
a loop filter; a multi-bit quantizer coupled to the loop filter, the quantizer comprising:
a counter configured to provide a multi-bit output value that estimates an output of the loop filter to provide a digital output of the ADC;a reference voltage generator configured to generate a reference voltage ramp based on the output value of the counter;a comparator coupled to the reference voltage generator to compare the reference voltage ramp to output of the loop filter. |
| 地址 |
Dallas TX US |
