| 发明名称 |
NOISE SHAPING FOR DIGITAL PULSE-WIDTH MODULATORS |
| 摘要 |
A circuit includes an analog-to-digital converter (ADC). The ADC is configured to receive an analog feedback signal and an analog input signal and generate a digital output. The circuit further includes a digital filter configured to filter the digital output and a noise shaper. The noise shaper is configured to truncate the filtered digital output and generate a noise shaper output, and to shape quantization noise generated during truncation. The circuit further includes a pulse width modulation digital-to-analog converter (PWM DAC) configured to process the truncated digital output of the noise shaper output and generate a PWM DAC output. |
| 申请公布号 |
US2015229324(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201514691084 |
申请日期 |
2015.04.20 |
| 申请人 |
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. |
发明人 |
SOENEN Eric;ROTH Alan;KINYUA Martin;SHI Justin;GAITHER Justin |
| 分类号 |
H03M3/00 |
主分类号 |
H03M3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A circuit comprising:
an analog-to-digital converter (ADC) configured to receive an analog feedback signal and an analog input signal and generate a digital output; a digital filter configured to filter the digital output; a noise shaper configured to truncate the filtered digital output and generate a noise shaper output, and to shape quantization noise generated during truncation; and a pulse width modulation digital-to-analog converter (PWM DAC) configured to process the truncated digital output of the noise shaper output and generate a PWM DAC output. |
| 地址 |
Hsinchu TW |
