DRV2700EVM: Single-Ended (DC coupled) input

Yijia Cai

Part Number: DRV2700EVM

Hello TI support teams,

Operating Condition: 5V external power
I am currently using the DC-coupled input, but I found some unexpected spikes in the output signal, which is not periodic. Is it normal?
If it is not, where does it come from? It might come from the digital crosstalk, say PWM signal, on the board, but I open all connections/pins except DC input.

Can I ask if there is any possible way to remove these spikes from the output signal?

over 2 years ago

0 Sydney Northcutt over 2 years ago

TI__Mastermind 18800 points

Hello,

Thank you for reaching out and providing the waveforms. Are you measuring single ended or differential output?

Regards,
Sydney Northcutt

0 Yijia Cai over 2 years ago in reply to Sydney Northcutt

Prodigy 10 points

Hello Sydney,

These are the output measurements for V+ and GND in different input signals from the DC port.

Yijia

0 Sydney Northcutt over 2 years ago in reply to Yijia Cai

TI__Mastermind 18800 points

Hi Yijia,

This device wasn't intended to be use single ended, so what you are seeing is common mode noise. When using the differential output, this noise is canceled out.

Regards,
Sydney Northcutt

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DRV2700EVM: Single-Ended (DC coupled) input