Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

about GBP & unit gain bandwidth question....

Status
Not open for further replies.

super

Full Member level 2
Joined
Aug 18, 2002
Messages
125
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Activity points
904
Dear all:
I see the data sheet, OP Gain Bandwidth product is 140Mhz,
Unit gain bandwidth is 40Mhz.
In my concept Gain bandwidth product should be equal to Unit gain bandwidth,
why in this data sheet is not equal ?

thanks.
 

The Gain-Band width Product being Constant is applied Strictly in the Single pole System only. But a Practical Opamp is not a Single Pole System. That might be the reason for this behaviour
 
  • Like
Reactions: anhnha

    super

    Points: 2
    Helpful Answer Positive Rating

    anhnha

    Points: 2
    Helpful Answer Positive Rating
If not a single pole system, ft should be also large than f3db , isn't it ?
thanks .
 

maybe their unity gain bandwidth is just the 3dB frequency. I dont understand why they used the term unity gain bandwidth. Rather confusin'
 

in that picture you have posted you can see that the condition given is -3dB.... it is actually the bandwidth that has been given not the unity gain bandwidth so only it is lesser than the gainbandwidth product.... i dont know why they have given it so.....
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top