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.

What's the difference between UGF and GBW for opamp?

Status
Not open for further replies.

lhlbluesky

Banned
Joined
Mar 30, 2007
Messages
558
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,298
Location
china
Activity points
0
what's the difference of UGF and GBW for opamp?

and, GBW is same for open loop and closed loop? why?

pls give me some explanation.
 

Re: UGF and GBW

GBW is the product of the DC gain with the 3-dB bandwidth of the amplifier.

UGF is the frequency at which the gain of the amplifier is equal to unity.

It should be noted that UGF is equal to the GBW only at the case that the amplifier acts as a single pole amplifier before the UGF, i.e only one pole before the UGF and all higher order poles are at frequency higher than the UGF.

Also, for single-pole systems, the GBW is constant because the 3-dB BW increase by the loop gain, while the gain decreases by the same value.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top