Nowadays, digital technology can increase the quality of sound produced with conventional techniques by 50% , but this increase will not reach 100% until the broadcast is also digital

This paper describes a low-voltage and low-power Gm-C low pass filter. The low-pass filter that precedes the A/D converter is called anti-aliasing filter. In the analog signal processing, the anti-aliasing filter would be one of the most important circuits in the transceiver architecture. This filter is located in the analog front-end circuits of DAB receivers. The 4 – order butterworth Gm-C low-pass filter using the proposed transconductore is simulated in a 0.18μm CMOS process. In this project, we have minimized the power consumption and maximized the cut-off frequency of the anti aliasing filter. The circuit consumed 848.17μwatt through a 1.8V power supply with a cut off frequency 80MHZ. Index Terms Anti Aliasing Filter, Digital audio broadcasting, gm-c filter, Transconductance.