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A 71dB dynamic range third-order ΔΣ TDC using charge-pump

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4 Author(s)
Gande, M. ; Sch. of EECS, Oregon State Univ., Corvallis, OR, USA ; Maghari, N. ; Taehwan Oh ; Un-Ku Moon

A high resolution time-to-digital converter (TDC) architecture is proposed. The architecture combines the principles of noise-shaping quantization and charge-pump to build a third-order ΔΣ TDC with a dedicated feedback DAC. Fabricated in a 0.13μm CMOS process, the prototype TDC achieves better than 71dB DR and 67dB SNDR in 2.81MHz signal bandwidth (OSR=16) and consumes 2.58mW.

Published in:
VLSI Circuits (VLSIC), 2012 Symposium on

Date of Conference: 13-15 June 2012

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