operational transconductance amplifier

Status
Not open for further replies.
R

rameshbalan

Member level 2
Joined
Jan 11, 2012
Messages
44
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
1,563
hello.
i confused that what is the difference between OTA and v to I converter.because input to OTA is voltage and output is current. similarly input of OTA is voltage and output is current.so can we use the OTA instead of V to I converter in circuits.
 


An ideal OTA (with a very large output resistance) works as a voltage-controlled current source (VCCS).
Of course, you can call such a system "voltage-to-current converter" because the input voltage is "converted" into a current by multiplying the voltage with a transconductance gm.
 
thank you,but i have one doubt,can i replace the OTA network by V to I converter made by op amp in circuits.is it make any difference in output?
 

rameshbalan said:
thank you,but i have one doubt,can i replace the OTA network by V to I converter made by op amp in circuits.is it make any difference in output?
Click to expand...

The answer is simple: YES, if the V-I converter has the same properties as the OTA.
However, as this never will be the case (input/output impedances, transconductance gm, bandwidth) certainly the circuit will behave differently.
 

The V-I converter might have different I/P ,O/P impedances .When you mean V-I converter what is that you mean ? Can you please post a picture of the circuit ?
Thanks
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…