SLAA719 August   2016 TPA3221 , TPA3244 , TPA3245 , TPA3250 , TPA3251 , TPA3255 , TPA3255-Q1

 

  1.   TPA32xx Analog Input Grounding for Single Ended Inputs
    1.     Trademarks
    2. 1 Single Ended to Differential Input Stage
    3. 2 Input Stage with Ground Plane
      1. 2.1 Testing Ground Plane Configuration
      2. 2.2 Ground Plane Results
    4. 3 Input Stage with Star Ground
      1. 3.1 Testing Star Ground Configuration
    5. 4 TPA32xx Ground Pin Reference

4 TPA32xx Ground Pin Reference

For reference, the pinout of the analog and power ground pins on the TPA32xx devices are listed in Table 1.

Table 1. TPA32xx Ground Pins

TPA32xx Class-D Amplifier Ground Pins
Amplifier Analog Ground Pins Power Ground Pins
TPA3244 10, 11 25, 26, 33, 34, 41, 42
TPA3245 12, 13 25, 26, 33, 34, 41, 42
TPA3250 10, 11 25, 26, 33, 34, 41, 42
TPA3251 12, 13 25, 26, 33, 34, 41, 42
TPA3255 12, 13 25, 26, 33, 34, 41, 42