DRV2667: V<0 output is not generated

Naoki Shitanda

Prodigy 20 points

Part Number: DRV2667

HI, I would like to output 50Hz, 100Vpp sine wave or pulse.

So I write the program below referring the example on the datasheet. However I only get V>0 output, but V<0.

Can't I get full range output with this IC? The datasheet seems to say Yes...

Images of my I2C program and outputted waveform are attached.

Best regards,

over 4 years ago

0 Naoki Shitanda over 4 years ago

Prodigy 20 points

+1 Ivan Salazar over 4 years ago in reply to Naoki Shitanda

TI__Guru** 108895 points

Hi Shitanda-san,

How are you measuring the signal witht he scope? You must consider the output is differential, so the load will be connected between OUT+ and OUT-

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

0 Naoki Shitanda over 4 years ago in reply to Ivan Salazar

Prodigy 20 points

Ivan-san,
Thank you for your reply. I measure between OUT+ and OUT-, but I found that OUT- is connected to GND by mistake...
Now, I get the right wave.

Thanks a lot.

Best regards,
-Naoki

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DRV2667: V<0 output is not generated