Op-amp comparison (op07-TLE2027-op177)?????

Discussion in 'The Projects Forum' started by Sonnet, Dec 11, 2010.

  1. Sonnet

    Thread Starter New Member

    Dec 11, 2010
    1
    0
    Dear all
    Hi, I've used op- amps "TLE2027", and "op07" in my design to make a frequency selective amplifier with gain of 30 dB and BW of 20HZ (0.05-20 Hz). During tests I found out TLE2027 have no response to my design so I've replaced it with OP07 and it immediately worked. On the other hand at first I've considered working with op177 but as I need to have POSITIVE supply voltage (+5 and GND) I changed the design and considered TLE2027 & OP07.
    Now the thing is my circuit it working, but I've no idea why!! because I've been told by technician to use them,and when I asked him the reason he just knows it through his experience.
    I'm reading their datasheets now, but they are not helpful.
    Any idea would be appreciated :confused:
     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    You forgot to post your schematic so we are just guessing. Your supply is 5V but the datasheet for the TLE2027 shows it performing poorly with a supply as low as 8V and no information for lower supply voltages where it probably doesn't work.
    I didn't look at the datasheets for the OP07 and the OP177.
     
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