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对一种结构简单的互阻ＣＭＯＳ放大器的工作原理进行了分析，着重对其灵敏度、频率特性和动态范围等参数与电路结构参数之间的关系进行了模拟分析和设计研究。接收电路按０．３５／０．５μｍ规则设计，在采用０．８μｍ沟道长度的条件下，电路工作频率可达６００Ｍｂ／ｓ，允许最小输入光电流约为５μＡ，光电流噪声抑制能力可通过前两级放大器的宽长比来调节。
This paper analyzes the working principle of a simple transconductance CMOS amplifier, and focuses on the simulation analysis and design of the relationship between the parameters such as sensitivity, frequency characteristics and dynamic range and the circuit structure parameters. The receiving circuit is designed according to the rule of 0.35 / 0.5μm. Under the condition of 0.8μm channel length, the circuit can operate at 600Mb / s, allowing the minimum input photocurrent to be about 5μA. The photocurrent noise suppression capability can be achieved by The first two amplifiers to adjust the width-length ratio.