کنفرانس مهندسی برق ایران

صفحه اصلی / بیست و نهمین کنفرانس مهندسی برق ایران

A 400 ps Input Time Range 2× Time Amplifier Using Time-to-Current Compensation Technique

نویسندگان :

Mohammad Amin Yaldagard¹ Hossein Shamsi²

1- دانشگاه صنعتی خواجه نصیرالدین طوسی 2- دانشگاه صنعتی خواجه نصیرالدین طوسی

کلمات کلیدی :

time amplifier, time-to-current conversion, compensation, dynamic range, gain error

چکیده :

Low dynamic range (DR) and the sensitivity to process variations and mismatch are the two known issues of the time amplifiers (TA) which have been utilized in deep sub-micron implemented time-to-digital converters (TDC). To alleviate these problems, a 2× time amplifier with a wide input time difference range is proposed in 65 nm CMOS technology which employs a new compensation technique based on time-to-current conversion. This compensation method maps the input time to an appropriate current value injecting into the conventional 2× TA. Simulation results demonstrate a 400 ps input time range with less than 10% gain error while the TA has the maximum delay of 120 ps. Monte-Carlo simulation shows less than 9% standard deviation at inputs higher than 20 ps for the TA gain.