DocumentCode :
2650986
Title :
A constant-gain time-amplifier with digital self-calibration
Author :
Tong, Baoli ; Wei Yan ; Zhou, Xiaofang
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
fYear :
2009
fDate :
20-23 Oct. 2009
Firstpage :
1133
Lastpage :
1136
Abstract :
This paper presents a closed-loop time-amplifier (TA) with a novel self-calibration technique by adjusting the output capacitance of the conventional TA. The gain of the TA is stabilized, with an input of 0.05~1 Td (one buffer delay), over a large process-voltage-temperature (PVT) variation: from SS to FF process corner, +/-10% supply voltage, and -40 to 80°C. The proposed TA is designed with SMIC 0.18-¿m mixed-signal CMOS process. Simulation results show that the gain deviation of TA is well controlled within 0.35% under all circumstances, with regard to the gain in typical PVT condition, and the whole circuit consumes 600 ¿A with an input signal of 40 MHz.
Keywords :
CMOS integrated circuits; amplifiers; calibration; mixed analogue-digital integrated circuits; SMIC mixed-signal CMOS process; closed-loop time-amplifier; constant-gain time-amplifier; current 600 mA; digital self-calibration technique; process-voltage-temperature variation; size 0.18 mum; temperature -40 degC to 80 degC; Application specific integrated circuits; CMOS process; Calibration; Capacitance; Circuit simulation; Delay; Fabrication; Feedback; Linearity; Voltage; Self-Calibration; Time Amplifier (TA); Time-to-Digital Converter (TDC);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
ASIC, 2009. ASICON '09. IEEE 8th International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-1-4244-3868-6
Electronic_ISBN :
978-1-4244-3870-9
Type :
conf
DOI :
10.1109/ASICON.2009.5351370
Filename :
5351370
Link To Document :
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