AD8054 Voltage Stabiliser application

Hi,

I have a customer using the AD8054 in a voltage stabiliser application.  It is configured as a voltage follower :-

0-5V on the +ve pin.  -ve pin connected to the output.  On the output he has two series resistors 5Kohm and 10Kohm to get 3.3V at the divider.

He is seeing a wide variation on the output voltage of the Op Amp with some devices outputting 4.39V.  Other devices, deemed "good" see 4.98V.

Is this variation at the output of the OpAmp normal ?

Any comments/suggestions welcome.

Thanks

Andy

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  • 0
    •  Analog Employees 
    on Oct 18, 2014 6:47 AM over 6 years ago

    Hi Andy,

    If he would go for a replacement part, I would suggest AD8040. It is a quad, rail-to-rail input and output high speed amplifier with an input voltage range of extending 200 mV beyond each supply rail having no phase reversal.

    For its  + 5 V supply performance see below.

    AD8040 can operate on 2.7 to 12 V supplies with a bandwidth of 120 MHz.

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  • 0
    •  Analog Employees 
    on Oct 18, 2014 6:47 AM over 6 years ago

    Hi Andy,

    If he would go for a replacement part, I would suggest AD8040. It is a quad, rail-to-rail input and output high speed amplifier with an input voltage range of extending 200 mV beyond each supply rail having no phase reversal.

    For its  + 5 V supply performance see below.

    AD8040 can operate on 2.7 to 12 V supplies with a bandwidth of 120 MHz.

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