TAS3251: TAS3251

Hello Roy,

It should be 14A for BTL, can you check OCT in the datasheet?

BR,

Alix Wan.

Hi Roy,

VU meter can be considered as a 600Ohm loading for the DAC, right? I don't have the exact number for this device, but usually the minimum loading should over 1kOhm. So, there might be not enough driving capability...

You can use a OP-amp and build a simple buffer for it. Or just use a resistor divider. Does it work for you?

Thanks!

Regards,

Sam

Hi Sam,

I guess OP might be OK, it is even better if a simple divider also works.

The selection is related to the DAC output capability.

We will check it out and feedback later.

Thank you, 

Regards,

Roy Chen

Hi Alix,

Thank you for your reply,

Could I ask what does 14A and OCT stand for?

Best Regards,

Roy Chen

Greetings,

connect an OP is done.

But I need a -VEE power, Could I ask the output capability of CPVSS of TAS3251 for OP AMP minus power support?

Hi Roy,

A -VEE power could increase the complexity of the system. How about using AC coupling and bias the OP input at 1/2 VCC?

It's not recommended to use the TAS3251 internal voltage regulators to power other devices on the board. Thanks!

Regards,

Sam