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LQM2MPN2R2G0L Datasheet(PDF) 41 Page - STMicroelectronics |
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LQM2MPN2R2G0L Datasheet(HTML) 41 Page - STMicroelectronics |
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41 / 48 page  TS4621B Application information Doc ID 022194 Rev 2 41/48 4.7.1 Common mode sense layout The TS4621B implements a common-mode sense pin to correct any voltage differences that might occur between the return of the headphone jack and the AGND of the device that can create parasitic noise in the headphone and/or line out. The solution to strongly reduce and practically eliminate this noise consists in connecting the headphone jack ground to the CMS pin. This pin senses the difference of potential (voltage noise) between the TS4621B ground and the headphone ground. Thanks to the frequency response and the attenuation of the common-mode sense pin, this noise is removed from the TS4621B outputs. Figure 83. Common mode sense layout example Common mode sense pin Output jack connector Ground plane |
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