Voltage Amplifier

Discussion in 'General Electronics Chat' started by freemyneighbor, Nov 19, 2014.

  1. freemyneighbor

    Thread Starter New Member

    Nov 19, 2014
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    Can somebody list some good op-amps for amplifying 0-15mV to 0-5V ?

    Thanks
     
  2. Lestraveled

    Well-Known Member

    May 19, 2014
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    Sure, download the TI linear data book. Almost any op-amp can do that. How about being a little more specific about what you need.
     
  3. freemyneighbor

    Thread Starter New Member

    Nov 19, 2014
    11
    0
    I am trying to amplify voltage output from a pyranometer, measures sunlight irradiance in 5-20mV and use it for data logging purposes. I have a cRIO with AI +-10V IO.
     
  4. Lestraveled

    Well-Known Member

    May 19, 2014
    1,957
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    OK, so you need a low speed well behaved precision op-amp. What is your available power supply voltage(s)? Are there any voltage offsets in your input voltage? Do you need more than one op-amp per package? Filtering? Output impedance of your sensor, high or low? Input impedance of your I/O channel?
     
    Last edited: Nov 19, 2014
  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,544
    1,251
    Also, does the sensor output really go down to 0.0V, or just to a really low (but non-zero) voltage? If the latter, you might be able to go with a "rail-to-rail" opamp and require only one power supply.

    ak
     
  6. Fuji

    Member

    Nov 8, 2014
    100
    1
    rail to rail.
     
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