Hi team,
Customer has concern about click noise. They understand 1dB/step is minimum step. But they want to reduce click noise at external circuit. Could you give me advises to reduce click noise?
Regards,
Hideki
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Hi team,
Customer has concern about click noise. They understand 1dB/step is minimum step. But they want to reduce click noise at external circuit. Could you give me advises to reduce click noise?
Regards,
Hideki
Hi, Hideki,
Do you have any feedback on this?
Best regards,
Luis Fernando Rodríguez S.
Hi, Hideki,
The pop issues are always related to the capacitors connected to the device. The most important thing when selecting the capacitors is to ensure that they will be discharged before every turn-on.
So, I would recommend to try with lower values at the bypass pin and at the output pins.
As stated in the datasheet, the bypass capacitor must be at least 12 times higher than the input capacitor. Could the customer try with 1.5uF capacitor instead of the 4.7uF capacitor? In addition, could the customer reduce the output capacitor to 10uF capacitor?
Please let me know if the customer sees some differences on this.
Best regards,
Luis Fernando Rodríguez S.
Hi Luis,
Thank you for the explanation. Maybe I misuse the word of "click" noise. The customer concern is a noise when the gain change in step by increasing or decreasing DC-VOL.
Is your recommendation useful for this case?
Regards,
Hideki
Hi, Hideki,
Correct, in order to improve the noise level during the gain change, it is important to ensure that the capacitors are not too high to generate pop issues. So, these steps will apply for this kind of noise.
In addition, how is the customer adjusting the DC-VOL steps? How much he modifies the DC level on each step?
Best regards,
Luis Fernando Rodríguez S.
Hi, Hideki,
Could you take a look at my questions about the DC-VOL level adjustment above? Please let me know if you have any update on this.
Best regards,
Luis Fernando Rodríguez S.