Amplifier Selection?

I have an output signal of around 20mV. I want to amplify it to ~1V without causing any phase shifting of my signal. Is it possible? If possible what type of amplifier should I use? My signal is sine or square and Frequency of my signal may be 1kHz to 500MHz.

Thanks for reply.

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  • 0
    •  Analog Employees 
    on May 22, 2014 12:02 AM

    Hi Einstein,

    I suggest you add AD8000 (1.5 GHz Ultrahigh Speed Op Amp) and AD8003 (Triple, 1.5 GHz Op Amp) to your Op Amps consideration, both are current feedback amplifiers. Current Feedback amplifiers offer wide closed-loop bandwidth, low distortion at high frequencies and faster slew rates. For the gain configurations, you can refer to page 14 of AD8000 and page 12 of AD8003 datasheet. One drawback of current feedback is that you have to use specific feedback resistance for a certain gain  but it is also included in the datasheet. The difference between AD8000 and AD8003 is that you will have to use three AD8000 unlike AD8003 which only requires one IC. Use gain of +5 for the first and second stage and +2 for the last stage.

    Lastly, may I know what type of application you're in so that I could assist you better and suggest you the best ADI part for you. I hope this helps.

    Regards,

    Jino

Reply
  • 0
    •  Analog Employees 
    on May 22, 2014 12:02 AM

    Hi Einstein,

    I suggest you add AD8000 (1.5 GHz Ultrahigh Speed Op Amp) and AD8003 (Triple, 1.5 GHz Op Amp) to your Op Amps consideration, both are current feedback amplifiers. Current Feedback amplifiers offer wide closed-loop bandwidth, low distortion at high frequencies and faster slew rates. For the gain configurations, you can refer to page 14 of AD8000 and page 12 of AD8003 datasheet. One drawback of current feedback is that you have to use specific feedback resistance for a certain gain  but it is also included in the datasheet. The difference between AD8000 and AD8003 is that you will have to use three AD8000 unlike AD8003 which only requires one IC. Use gain of +5 for the first and second stage and +2 for the last stage.

    Lastly, may I know what type of application you're in so that I could assist you better and suggest you the best ADI part for you. I hope this helps.

    Regards,

    Jino

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