Accurate ramp signal, with low power dissipation, is highly demanded, for applications like counter ADC. This paper presents a novel low power ramp generator circuit with a negative feedback loop for compensation of the variations in process, voltage, and temperature (PVT). While using an opamp for PVT compensation has been essential in the previous ramp generator structures, the proposed ramp generator is opamp-less. Derived equations of the proposed ramp generator circuit show that PVT compensation structure works effectively. In addition, the circuit design and simulations were done in TSMC 0.18[Formula: see text][Formula: see text]m CMOS technology. Corner analysis shows that integral non-linearity (INL) of the ramp signal is about 3.7[Formula: see text]mV, for a wide temperature range, while the power dissipation of the circuit is about 1.16[Formula: see text][Formula: see text]W.

中文翻译：

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一种用于斜坡发生器电路的无运算放大器 PVT 补偿结构

对于计数器 ADC 等应用，非常需要具有低功耗的准确斜坡信号。本文提出了一种新颖的低功率斜坡发生器电路，带有一个负反馈回路，用于补偿工艺、电压和温度 (PVT) 的变化。虽然在以前的斜坡发生器结构中使用运算放大器进行 PVT 补偿是必不可少的，但所提出的斜坡发生器是无运算放大器的。所提出的斜坡发生器电路的推导方程表明 PVT 补偿结构有效地工作。另外，电路设计和仿真是在TSMC 0.18[公式：见正文][公式：见正文]m CMOS工艺中完成的。角点分析表明，在很宽的温度范围内，斜坡信号的积分非线性（INL）约为 3.7[公式：见正文]mV，而电路的功耗约为 1。