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本文提出了一种由ＭＯＳ型跨导运算放大器（ＯＴＡ）和电容（Ｃ）实现的程控双二次钟型均衡器。其钟型响应的中心频率、增益和带宽分别由各自的控制电流独立调节。该电路结构简单，易于集成。此电路工作在±５Ｖ电源电压下，电路的线性输入范围可达—１．５Ｖ到＋２．５Ｖ，中心频率可线性调节二个数量级以上，最大增益可达±２０ｄＢ．
This paper proposes a programmable quadratic two-way equalizer implemented by a MOS transconductance operational amplifier (OTA) and a capacitor (C). The center frequency, gain and bandwidth of its bell-shaped response are independently adjusted by their respective control currents. The circuit structure is simple and easy to integrate. The circuit operates at ± 5V supply voltage, with a linear input range of -1.5V to + 2.5V. The center frequency can be linearly adjusted by more than two orders of magnitude with a maximum gain of ± 20dB.