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New Log-Domain First-Order Multifunction Filter Using MOSFETs in Weak Inversion

机译:采用弱反转的MOSFET的新型对数域一阶多功能滤波器

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摘要

A new current-mode first-order log-domain multifunction filter is presented in this paper. This filter has single input and provides three outputs (low-pass, high-pass and all-pass) using a first-order low-pass filter and five of current mirrors as building blocks. The proposed filter employs only MOSFETs and a grounded capacitor. The first-order filters are used in audio and video applications extensively. The MOSFETs of the core section are operated in weak inversion thereby making the circuit suitable for low-voltage, low-power applications. The SPICE simulations have shown good performance of the proposed filter.
机译:本文提出了一种新的电流模式一阶对数域多功能滤波器。该滤波器具有单输入,并使用一阶低通滤波器和五个电流镜作为构建块提供三个输出(低通,高通和全通)。提出的滤波器仅采用MOSFET和接地电容器。一阶滤波器广泛用于音频和视频应用中。核心部分的MOSFET以弱反相运行,因此使该电路适合于低电压,低功率应用。 SPICE仿真显示了所提出的滤波器的良好性能。

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