一種差動信號放大裝置，包括差動放大器、第一阻抗元件、第二阻抗元件、電壓源、以及高通濾波器。其中差動放大器以第一端及第二端接收輸入差動信號，以第三端及第四端分別透過第一及第二阻抗元件自電壓源汲取電流。以上第三端及第四端汲取的電流分別為第一端及第二端所接收電壓的GM倍，GM為差動放大器的轉導增益值。此外，高通濾波器接收輸入差動信號，輸出控制差動信號以控制第一阻抗元件及第二阻抗元件，使第一及第二阻抗元件的阻抗值在輸入差動信號改變狀態的瞬間，分別隨第一端及第二端所接收的電壓反相變化。 An apparatus for amplifying differential signals is provided. The apparatus comprises a differential amplifier, a first impedance component, a second impedance component, a voltage source and a high-pass filter. The differential amplifier receives an input differential signal with a first terminal and a second terminal. The differential amplifier also drains currents from the voltage source into a third terminal and a fourth terminal via the first and the second impedance components respectively. The high-pass filter receives the input differential signal and outputs a control differential signal to control the first and the second impedance components so that the impedance of the first and the second impedance components vary inversely in response to the voltages at the first and the second terminals respectively when the state of the input differential signal changes.
一種差動信號放大裝置，包括差動放大器、第一阻抗元件、第二阻抗元件、電壓源、以及高通濾波器。其中差動放大器以第一端及第二端接收輸入差動信號，以第三端及第四端分別透過第一及第二阻抗元件自電壓源汲取電流。以上第三端及第四端汲取的電流分別為第一端及第二端所接收電壓的GM倍，GM為差動放大器的轉導增益值。此外，高通濾波器接收輸入差動信號，輸出控制差動信號以控制第一阻抗元件及第二阻抗元件，使第一及第二阻抗元件的阻抗值在輸入差動信號改變狀態的瞬間，分別隨第一端及第二端所接收的電壓反相變化。 An apparatus for amplifying differential signals is provided. The apparatus comprises a differential amplifier, a first impedance component, a second impedance component, a voltage source and a high-pass filter. The differential amplifier receives an input differential signal with a first terminal and a second terminal. The differential amplifier also drains currents from the voltage source into a third terminal and a fourth terminal via the first and the second impedance components respectively. The high-pass filter receives the input differential signal and outputs a control differential signal to control the first and the second impedance components so that the impedance of the first and the second impedance components vary inversely in response to the voltages at the first and the second terminals respectively when the state of the input differential signal changes.