A 40-nm CMOS, 1.1-V, 101-dB Dynamic-Range, 1.7-mW Continuous-Time &lt;formula formulatype="inline"&gt;&lt;tex Notation="TeX"&gt;$\Sigma\Delta$&lt;/tex&gt; &lt;/formula&gt; ADC for a Digital Closed-Loop Class-D Amplifier
IEEE transactions on circuits and systems. I, Regular papers