Title :
A novel charge-pump based Time-to-Digital Converter
Author :
Napolitano, P. ; Alimenti, F. ; Carbone, Paolo
Author_Institution :
Dept. of Electron. & Inf. Eng., Univ. of Perugia, Perugia, Italy
Abstract :
In this work, the design of a Time-to-Digital Converter (TDC) for measuring the time-of-flight (ToF) of a radio pulse is described. It consists on two blocks: a time-to-voltage transducer, whose scheme is that of a charge pump, designed using a 0.25 μm CMOS process, and an incremental first order sigma-delta (ΣΔ) converter. The two blocks are connected together by means of a sample and hold amplifier (SHA). The specifications are: time resolution smaller than 27 ps and range up to 220 ns. The total relative percentage error is less than 3%, if a more than 10 bits ΣΔ converter is adopted.
Keywords :
CMOS integrated circuits; charge pump circuits; sample and hold circuits; sigma-delta modulation; CMOS process; charge-pumps; incremental first order sigma-delta converter; radio pulse; relative percentage error; sample and hold amplifier; size 0.25 mum; time-of-flight measurement; time-to-digital converter; time-to-voltage transducer; Analytical models; Charge pumps; Current measurement; Design engineering; Instrumentation and measurement; Pulse amplifiers; Pulse measurements; Sea measurements; Transducers; Voltage; Time-of-Flight (ToF); Time-to-Digital Converter (TDC); charge pump; incremental Sigma-Delta (ΣΔ) converter;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3352-0
DOI :
10.1109/IMTC.2009.5168688
