76-dB DR, 48 fJ/Step Second-Order VCO-Based Current-to-Digital Converter

A continuous-time (CT) second-order ΔΣ current-to-digital converter (CDC) is presented in this paper. The proposed CDC uses two current-controlled ring oscillators as phase-domain integrators to achieve second-order quantization noise shaping. The proposed CDC uses a current-reuse architecture in wh...

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Veröffentlicht in:	IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2020-04, Vol.67 (4), p.1149-1157
Hauptverfasser:	Jayaraj, Akshay, Danesh, Mohammadhadi, Tannirkulam Chandrasekaran, Sanjeev, Sanyal, Arindam
Format:	Artikel
Sprache:	eng
Schlagworte:	CMOS Computer architecture continuous-time ΔΣ current-reuse current-to-digital converter Digital to analog conversion Digital to analog converters Integrators Inverters Linearity Noise reduction Noise shaping Oscillators Phase frequency detector Prototypes Quantization (signal) Voltage controlled oscillator (VCO) Voltage-controlled oscillators
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