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TAS2552: Some questions

Part Number: TAS2552

Hi Sirs,

Sorry to bother you.

We would like to know 

1. Do we need  pack the GND on OUT+/OUT-/VSENSE+/VSENSE? If Yes, should we connect to AGND or PGND?

2. Have the brd file can refer?

3. TAS2552 VBAT power consumption,
Our devices is 8ohm 1W output, in this spec what will VBAT current consumption?