CCS/TINA-TI: Code Composer Studio™ forum

SARAVANA VILASHINI M

Prodigy 30 points

Part Number: TINA-TI

Tool/software: Code Composer Studio

Need to find 3db bandwidth for the circuit attached below. Error is showing up as only one input is allowed.

over 6 years ago

0 Hasan Babiker31 over 6 years ago

TI__Genius 15605 points

Hello Saravana,

You cannot have two inputs in TINA, however, you can have one input source driving two current sources. I've done this in an example TINA file that i've attached below. Note that the gain of your voltage controlled current sources can be adjusted to have two different currents.

Saravana.TSC

Best,

Hasan Babiker

0 SARAVANA VILASHINI M over 6 years ago in reply to Hasan Babiker31

Prodigy 30 points

I didn't get proper output. May be I am wrong. Can you help me in simulating the circuit?. I have attached the file which contains (file you have sent merged with my circuit) and my seperate cicuit is shown in the previous issue.. Basic logic of the circuit is - If i give 1mA to the two current source it should get subtracted and output should be 0 volts.

/cfs-file/__key/communityserver-discussions-components-files/14/0638.Saravana.TSC

0 SARAVANA VILASHINI M over 6 years ago in reply to SARAVANA VILASHINI M

Prodigy 30 points

i have to find 3db bandwdith. But when i simulate AC transfer characteristics Iam getting a wrong plot. I have attched screenshot.

0 Hasan Babiker31 over 6 years ago in reply to SARAVANA VILASHINI M

TI__Genius 15605 points

Hey Saravana,

You are not getting a proper bandwidth plot because of exactly the issue you highlighted. Since the currents are cancelling each other, you basically have no input into the device. If you change the gain of VCCS2 to 1, you will get a better looking AC response.

Best,

Hasan Babiker

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