DRV632EVM: Usage of Transceiver Board

Sadanori Kato

Part Number: DRV632EVM
Other Parts Discussed in Thread: INA1650, DRV632

Hi,

Should the coaxial ground be connected with the power supply common(GND on DRV632EVM board) if using DRV632EVM as the transceiver board ?
The ground loop isolation circuit is suggested in INA1650 data sheet as below.
So, could you please give me your advice about that ?

Best regards,
Kato

over 5 years ago

0 Luis Fernando Rodriguez S. over 5 years ago

TI__Guru* 84915 points

Kato-san,

Our team will take a look at this issue. We will provide an answer as soon as possible.

Best regards,
Luis Fernando Rodríguez S.

0 Ivan Salazar over 5 years ago

TI__Guru* 95385 points

Hi Kato-san,

As long as the GND is the same along the audio signal path, it should be OK to connect the cable common to DRV632 GND.
Ground loop happens when cable common is connected to a different GND, like chassis. However if there is ground loop isolation circuit on the receiver side it should be OK as well.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 nazim zmirli26 over 5 years ago in reply to Ivan Salazar

Prodigy 20 points

you need to level down the voltage when transmitting the data by using a level shifter, the wifi modulo works with 3.3 volts and Arduino with 5V Pnr Status TextNow VPN.

0 Ivan Salazar over 5 years ago in reply to nazim zmirli26

TI__Guru* 95385 points

Hi Nazim,

Is your comment actually related to this thread? Please see the original post above: e2e.ti.com/.../770419

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Sadanori Kato over 5 years ago in reply to Ivan Salazar

Guru 36490 points

Hi Ivan-san,

Thank you for your prompt reply.

I understood.

Best regards,
Kato

Audio

Audio forum

DRV632EVM: Usage of Transceiver Board