Hi Sirs,
I got inconsistent crosstalk test results with TPA6166 EVM and datasheet. Would you please advise how to improve it?
If there is limitation on the EVM. Would you pls provide official test result based on the test condition:
My test was done by common ground of the AP, 32ohm load and power supply.
I can see crosstalk signal on a disabled channel as the picture below:
DIgital gain was set to 0dB at 0x07 and 0x08:
w 80 07 B9 #Left Headphone Volume Register
w 80 08 79 #Right Headphone Volume Register
I tried to reduce the digital gain of one of the output channels to the minimum, however, it cannot solve the crosstalk problem:
Would you pls advise how to achieve datasheet's test result on the EVM?
We need crosstalk <=-50dB across 100Hz~15kHz with 32ohm and 320ohm loads to design-in this parts in high volume OEM.
Thank you and Best regards,
Wayne Chen
07/17/2020