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.

Instrumentation amplifier

Status
Not open for further replies.

slchen

Member level 2
Joined
Nov 23, 2005
Messages
46
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,286
Location
CC
Activity points
1,647
Dear all:

I prepare to design an instrumentation amplifier in an single chip!
So I need to design 3 OPAMPs and several resistors in the chip.
What shold be concerned about this OPAMPs?
What architecture of OP is suitable for instrumentation amplifier?
Thanks!

Best Regards,
slchen
 

OpAmp

Member level 3
Joined
May 19, 2003
Messages
60
Helped
19
Reputation
38
Reaction score
5
Trophy points
1,288
Activity points
693
Usually Instrumentation amplifiers are for amplifying low frequency signals. So the offset voltage and 1/f noise of the opamps are the biggest concerns (usually). So if you want to use a CMOS process for you design, you may have to use autozeroing or chopper stabilization to eliminate the offset and 1/f noise of opamps.

OpAmp
 

    slchen

    Points: 2
    Helpful Answer Positive Rating

slchen

Member level 2
Joined
Nov 23, 2005
Messages
46
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,286
Location
CC
Activity points
1,647
Thanks for your help! OpAmp.

I have another question.
The Instrumentation amplifier is used to detect and amplify ECG (Electrncardiogram) signal.
Can I use fully differential OP to replace this Instrumentation amplifier?

Best Regards,
slchen
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top