| 发明名称 |
Quantization Noise Coupling Delta Sigma ADC with a Delay in the Main DAC Feedback |
| 摘要 |
A delta-sigma modulator has a first summing point subtracting a first feedback signal from an input signal and forwarding a result to a transfer function, a second summing point adding an output signal from said transfer function to the input signal and subtracting a second feedback signal, a first integrator receiving an output signal from the second summing point, a quantizer receiving an output signal from the integrator and generating an output bitstream, and a digital-to-analog converter receiving the bitstream, wherein the first and second feedback signal are the output signal from said digital-to-analog converter delayed by a one sample delay. |
| 申请公布号 |
US2014368365(A1) |
申请公布日期 |
2014.12.18 |
| 申请号 |
US201414301948 |
申请日期 |
2014.06.11 |
| 申请人 |
Microchip Technology Incorporated |
发明人 |
Quiquempoix Vincent;Vaucher Fabien |
| 分类号 |
H03M3/00 |
主分类号 |
H03M3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A delta-sigma modulator comprising:
a first summing point subtracting a first feedback signal from an input signal and forwarding a result to a transfer function; a second summing point adding an output signal from said transfer function to said input signal and subtracting a second feedback signal; a first integrator receiving an output signal from said second summing point; a quantizer receiving an output signal from said integrator and generating an output bitstream; a digital-to-analog converter receiving said bitstream, wherein the first and second feedback signal are the output signal from said digital-to-analog converter delayed by a one sample delay. |
| 地址 |
Chandler AZ US |
