Assistance in analysing the frequency response of an inverting amplifier

Reply to Thread

Discussion in 'The Projects Forum' started by c1rcu1ts, Mar 29, 2016.

Reply to Thread
  1. Mar 29, 2016 #1
    c1rcu1ts

    Thread Starter Member

    Oct 19, 2013
    62
    0
    Hello all,

    I was simulating the AC analysis of a particular op amp known as the THS4505, according to the diagram below
    upload_2016-3-29_3-37-45.png

    From the analysis, i found a peak which occurred at approximately 10MHz

    upload_2016-3-29_3-38-20.png

    Can someone explain to me why this occurs or point me in a direction where i can find the answer?
     
    #1 Reply
  2. Mar 29, 2016 #2
    crutschow

    Expert

    Mar 14, 2008
    20,463
    5,797
    The peak may be due to the input capacitance in the op amp model.
    Try reducing the resistors to about 2kΩ and see if the peak changes.
    Also look at the response when in a non-inverting follower configuration for comparison.
     
    #2 Reply
Loading...
Related Forum Posts:
  1. TheRedDevil18

    Frequency response of an amplifier

    Posted by TheRedDevil18 in forum: Analog & Mixed-Signal Design
    Replies:
    3
    Views:
    477
  2. Dritech

    Using an inverting amplifier at the output of an IA

    Posted by Dritech in forum: General Electronics Chat
    Replies:
    8
    Views:
    606
  3. NY10

    Discuss the frequency response of MOS cascode amplifier.

    Posted by NY10 in forum: General Electronics Chat
    Replies:
    0
    Views:
    1,846
  4. NY10

    frequency response of cascode amplifier

    Posted by NY10 in forum: General Electronics Chat
    Replies:
    1
    Views:
    2,013
  5. as21462

    input and output resistance of 741 in an inverting amplifier...?!

    Posted by as21462 in forum: Homework Help
    Replies:
    14
    Views:
    10,519
You May Also Like:

  1. Moving Beyond Silicon: A New GaN Power Transistor from EPC

  2. Stable and Precise Voltages: A New Family of Low-Power, High-Precision Voltage Reference ICs

  3. 5G's Double Vision for the Future


Load More Articles