Function Generator Amplification

Discussion in 'The Projects Forum' started by Wajhi, Feb 28, 2013.

  1. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    Function Generator Output Amplification.

    I want to take function generator as input (45 MHtz max, square and sine both waveforms) and the amplifier should be able to handle it at input and output. plus provide output current till around 1.6 amps . the lower the noise the better. money isnt an issue
    I need circuit, or schematic or name of op-amp i can use...i was thinking of using http://www.ti.com/product/opa1664 as starting point...and I dont have alot of days to design it...any help would be much appreciated!!

    and if you know any basic amp designing books/pdf/course that would be great too
     
  2. w2aew

    Member

    Jan 3, 2012
    219
    64
    A lot more information is needed.
    What input voltage range?
    What are the -Peak and +Peak voltages for input and output?
    What supplies are available?
    What output voltage range? (telling us current alone doesn't give enough info).

    You likely will not find a monolythic opamp that can source/sink anything near 1.6A, particularly with that kind of speed, so you'll have to design something that includes some kind of a power amplifier, which won't be trivial at these power levels. Assuming 1.6A is the rms current into a 50ohm load, that's 128W of output power at HF-VHF frequencies. Including harmonics of the squarewave at 45MHz, then the BW of the amp has to extend into the low UHF frequency range. Certainly not a trivial task, and not something you're likely to find in a forum post.
     
  3. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    well the input WOULD BE THIS FUNCTION GENERATOR : http://www.finaltest.com.mx/ProductDetails.asp?ProductCode=AWG5004B
    p.s i can buy any function generator, no issue

    the max output current can be altered to 1 amps if that helps

    no limit of supplies either..all lab supplies
     
  4. w2aew

    Member

    Jan 3, 2012
    219
    64
    I know that AWG very well, I work for Tek.

    What is the load that you intend to drive?
     
  5. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    the load is a micro coil..with inductance in nH....also resistance is extreamly low
     
  6. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    guys really need your help
     
  7. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    Over 3 gigahertz of bandwidth? Over 100 watts? and you want it when?

    ROFL!
     
    Last edited: Mar 1, 2013
  8. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0

    What....how did u reach over 3 Ghz of BW and over 100 Watts?
     
  9. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    This says, "over 100 watts".
     
  10. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    and this says, "300 picoseconds rise time".

    Caracteristicas
    Arbitrary Waveform Generator

    AWG5000B Series (AWG5014B • AWG5012B • AWG5004B • AWG5002B)

    Features & Benefits


    • 370 MHz Effective RF Frequency Output
    • 1.2 Gs/s and 600 MS/s Models
    • 14 bit Vertical Resolution
    • 2 or 4 Arbitrary Waveform Differential / Single-ended Outputs
      • Up to 4.5 Vp-p Single-ended and 9 Vp-p at Differential Output into 50 Ω
      • 0.95 ns Tr/Tf (10 - 90%) at 0.6 Vp-p
      • +/– 5 ns Range (50 ps Resolution) Inter Channel Skew Control
      • SFDR: 80 dBc (1 MHz), 64 dBc (10 MHz)
    • 4 or 8 Variable Level Marker Outputs
      • Up to 3.7 Vp-p Single-ended Output into 50 Ω
      • 300 ps Tr/Tf (20 - 80%) at 0 to 1 V
      • Up to 1 ns Range (50 ps Resolution) Delay Control
    • 28 bits ch1/ch2 Variable Level Digital Data Output
      • Up to 3.7 Vp-p Single-ended Output into 50 Ω
      • 300 ps Tr/Tf (20 - 80%) at 0 to 1 V
     
  11. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
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    I'll just throw out a guess here...

    Wireless power?
     
  12. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    ok so help me....the current requirement has been dropped to 1 Amp and also if I will be working with 45Mhtz, then wont rise time be a problem? I am just trying to learn here
     
  13. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    ....no ...not wireless power
     
    Last edited: Mar 4, 2013
  14. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    @w2aew
    @thatoneguy Look all i really need is 1 amps and for the amplifier to work on 45MHtz..nothing else///there are 3 function generators available. I just need a schematic so I can build the amplifier

    Function generator :
    Agilent 33220A
    Hameg HM8150


    Also can this amplification be achieved using this piezo amp:
    TREK PZD350??
     
  15. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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  16. Wajhi

    Thread Starter New Member

    Oct 17, 2011
    14
    0
    nothing that I can build ?? ..a simple amplifier capable of outputting 45 Mhtz at variable 0.5-1 amp current..and a function gen. at input...!??!
     
    Last edited: Mar 6, 2013
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