Electronic volume control circuit

[url=../Upload/2005527205215698.jpg] TC9153 is a CMOS high-fidelity volume control dedicated integrated circuit launched by Toshiba. The circuit is characterized by low power consumption, with a current of about 1 to 3mA. Small distortion, THD≤0.005%. The volume attenuation range is 0~-60dB, with every 2dB step. The volume is controlled by buttons, which overcomes the shortcomings of traditional potentiometers such as short service life and high noise. The circuit is as shown in the figure above. The preamplifier signal is input from pins (3) and (14), and the controlled volume is output from pins (6) and (11). AN1 and AN2 are volume increase and decrease controls respectively, which change by 2dB each time they are pressed. After making it, it is best to shield the entire circuit to prevent noise interference