LMP7300: the part dosnt work like data sheet.

SHIRAN ISRAEL

Part Number: LMP7300

im using the lmp7300 in a very simple way with no hysteresis:

where in my case, Rpullup=8.25kohm, and vcc=5V.

I enter to in+ a triangular wave like the following:

and I see that vin_h and vin_l are 0.986V instead of 2.048V. the prob is very accurate and Iv checked all the things related with scaling and accuracy.

what is the problem?

over 4 years ago

0 SHIRAN ISRAEL over 4 years ago

Prodigy 10 points

I cancelled the hysteresis after it didnt work with Hysteresis. first I used the same circuit as in data sheet:

in me case the R1=2.49kohm and both R1 and R1 are 0.1% tolerance.

0 Joe Vanacore over 4 years ago in reply to SHIRAN ISRAEL

TI__Mastermind 20240 points

Hello,

To better understand your application can you send a picture of your schematic from your simulation? And are you saying that your input signal isn't reaching its expected value?

For your follow up question, do you mean that R2 is also 1% tolerance? And what value resistor are you using for R2?

Kind Regards,

Joe

All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (www.ti.com/.../important-notice.shtml)

0 Joe Vanacore over 4 years ago in reply to Joe Vanacore

TI__Mastermind 20240 points

Hello,

There haven't been any posts to this thread for some time so I will close it.

I will assume that you have found the answers you need. If this is not the case please respond to this thread or create a new one.

Kind Regards,

Joe

Amplifiers

Amplifiers forum

LMP7300: the part dosnt work like data sheet.