2019年8月27日 · VTC（Voltage Transfer Characteristics）曲线： VTC的形状基本上与高于阈值的操作相同。VTC陡峭部分的斜率取决于反向器的亚阈值斜率。 其中涉及到的的四个重要参数：

A digital controlled switched charge pump is used to generate four different current so that this VTC can operate with variable conversion gain. The VTC is designed for time-based ADCs. The simulation results shows that SFDR of the VTC can be greater than 60dB and THD can be lower than -54dB for all working modes.

2023年12月5日 · 我们先利用vtc曲线找到vm，然后求出vm处的斜率曲线，让这个斜率曲线与vout=voh和vout=vol相交，得到的两个点分别就是vil和vih。 那么该如何推导出vih和vil用vm和g表达的式子呢？请看下面的推导。

VTC Mathematical Definitions •V OH is the output high level of an inverter V OH = VTC(V OL) •V OL is the output low level of an inverter V OL = VTC(V OH) •V M is the switching threshold V M = V IN = V OUT •V IH is the lowest input voltage for which the output will be ≥the input (worst case ‘1’) dVTC(V IH)/dV IH = -1 •V

• Voltage Transfer Characteristic (VTC) – plot of Vout as a function of Vin – vary Vin from 0 to VDD – find Vout at each value of Vin

2021年6月16日 · VTC（Voltage Transfer Characteristics）曲线： VTC的形状基本上与高于阈值的操作相同。 VTC陡峭部分的斜率取决于反向器的亚阈值斜率。

2022年3月21日 · The average gain of the VS-VTC is 6.01 ns/mV while that of the CS-VTC is 1.37 ns/mV. It should be noted that the gain of CS-VTC can be varied by adjusting either the current of the cascode current mirror or the integration capacitor.

2020年5月1日 · VIL和VIH需要计算VTC的增益g=-1的点，不过还有一种简化的噪声容限可以用下面的公式表示，相当于将过渡区线性近似。 静态CMOS反相器也可以作为一个模拟放大器使用，在过渡区会有相当高的增益。 但是这一区域很窄，作为放大器的一些其他性质也很差。 器件在不同的制造工艺（Process),工作电压（Voltage)以及温度（Temperature)条件下其参数一定会偏离设计中采用的典型值，但静态CMOS反相器的dc特性对这些变化不敏感，所以可以在很宽的工作条件 …

From the detailed analysis of VTC characteristics it can be observed that, CMOS inverter has a very narrow transition zone. Therefore, high gain can be achieved when both NMOS and PMOS are simultaneously ON and operated in saturation.

Abstract: A folding voltage-to-time converter (VTC) is proposed for time-based ADC. Conventional VTCs suffer serious linearity interference due to its large input range. The proposed VTC adopts a 4x folding architecture, and thus reduce the VTC input range which makes the gain of proposed VTC more larger and linear.