help how can i have a gain around 500 and frequency ranges from 0 to 100k ac signal

Discussion in 'General Electronics Chat' started by pinoyballer, Nov 30, 2007.

  1. pinoyballer

    Thread Starter Member

    Oct 31, 2007
    11
    0
    theres a as ac sinewave signal with a 10 mV peak to peak. I want it to have a gain of 500 so it will have 5 Volts peak to peak. And the range of frequence that you can do this is from 0 to 100k Hz. Is there a chip you can use to do this. any circuit you guys can give me to do. is it posible to power this using a usb of a laptop? how can you convert the +5 volts of a usb to -5 volts. i need the negative voltage for the V- of the op amp.
     
  2. nanovate

    Distinguished Member

    May 7, 2007
    665
    1
    An opamp maybe?

    You need to provide more info.
     
  3. pinoyballer

    Thread Starter Member

    Oct 31, 2007
    11
    0
    theres a as ac sinewave signal with a 10 mV peak to peak. I want it to have a gain of 500 so it will have 5 Volts peak to peak. And the range of frequence that you can do this is from 0 to 100k Hz. Is there a chip you can use to do this. any circuit you guys can give me to do.
    u
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    You will need an op amp with a gain bandwidth product over 50MHz, or a couple of more modest op amps in cascade.
    Can you give a real low frequency limit? A frequency of 0Hz is DC.
    Also - please don't double post.
     
  5. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    Most Op Amps could handle this.

    And one thread is sufficient to discuss the topic.
     
  6. Distort10n

    Active Member

    Dec 25, 2006
    429
    1
    OPA365 would be good.
     
  7. cumesoftware

    Senior Member

    Apr 27, 2007
    1,330
    10
    Do you want a power amplifier (for low impedance loads, namely speakers, audio amps are good for this) or a voltage amplifier (rather high impedance loads, a op-amp will do)?

    100Hz is well within the frequency range of an audio amplifier, hence the question.
     
  8. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,159
    You can search for Texas Instrument's Application Note, AN-31, Op amps for everyone. That will take you through the basics.
     
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