A Constant-Gain Time-Amplifier with Digital Self-Calibration

摘要：

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℃. The proposed TA is designed with SMIC 0.18-μm 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 μA with an input signal of 40 MHz.

关键词： Time Amplifier (TA) Time-to-Digital Converter (TDC) Self-Calibration

作者: Baoli Tong Wei Yan Xiaofang Zhou

作者单位: State Key Lab of ASIC & System,Fudan University,Shanghai,201203 China

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 1133-1136

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）