DAC7563： Analog output voltage have an AC signal

Alan Lai

Prodigy 20 points

Part Number: DAC7563

Analog output voltage have an AC signal, Changing the output can affect frequency and Vpp.

Is there any possibility to cause this problem?

over 6 years ago

0 Paul_Frost over 6 years ago

TI__Guru 52663 points

Hi Alan,

Do you have a capacitive load on the output? That could cause oscillation, as the output is essentially an OPAMP. Also, please verify if your power supply is stable and your grounds are connected.

Thanks!

0 Alan Lai over 6 years ago in reply to Paul_Frost

Prodigy 20 points

Remove the capacitor, test OK, thank you!!

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DAC7563： Analog output voltage have an AC signal