LM2904B-Q1: LM2904B as a buffer

Piotr F.

Intellectual 2660 points

Part Number: LM2904B-Q1
Other Parts Discussed in Thread: LM2904B, , TLV313, TINA-TI

HI Team,

I want to use one channel from LM2904B as a buffer with external BJT - see attached sim.

Output current 200mA, Signal range 0.1V~1V.

What is the reason for simulation not working? Is there any limiting factor in LM2904B-Q1 specs?

I can run this sim using TLV313 or so.

Bufer.TSC

over 4 years ago

0 Tim Claycomb over 4 years ago

TI__Genius 15410 points

Hi Piotr,

I think this might be an issue with the LM2904B model. I will get back to you with an answer as soon as possible.

Thank you,

Tim Claycomb

0 Tim Claycomb over 4 years ago

TI__Genius 15410 points

Hi Piotr,

I was able to get the circuit to run when I changed the NPN transistor to a generic NPN transistor provided in TINA-TI and also the current meter in series with the op amp supply. Please see attached TINA file. Would this work for the customer?

LM2904B V to I Buffer.TSC

Thank you,

Tim Claycomb

Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

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LM2904B-Q1: LM2904B as a buffer