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output noise of AD8421ARZ

Category: Hardware
Product Number: AD8421

as shown as the picture above, I connect the vin+ with vin-  and power is ±5V, gain is 80. But the noise is about 10mV from oscilloscope.How can I reduce the noise?

Thanks! 

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Parents Reply
  • Hi DPFATE_DP,

    Since there is also a 10mV noise on your power supply pin, the noise may come from your power ICs. You may check your power management for noise sources. AD8421 needs a stable DC voltage as the noise can adversely affect performance.

    You may place a 0.1uf  decoupling capacitor as close as possible to each supply pin.

    I hope this helps.

    Best regards,
    Franz

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