hi all, i need to know the dual op amp of the part number LF357..... like TL072 is the dual version of TL071..... just like that whats the dual version of LF357....

 

Hello,

As far as I know, there are no dual opamp versions of the LM357.

Greetings,
Bertus

 

The LF357 has been out of production since 2004.

 

ok thanks..... that was y i couldnt find the dual version..... anyways folks..... believe it or not i made the 450KHz sine wave oscillator(wein bridge) with TL072....... and it worked..... when i used LF357 that gave distortion..... may be there was some problem..... i dont know bt as TL072 is working fine for me i dont have any trouble anymore..... i tried making a TL072 450Khz oscillator before on a breadboard bt this time i tried on a PCB that worked.... yuppeeee!!!

 

A TL07x runs into trouble when the output is higher than 100kHz.
An OPA134 single, OPA2134 dual or OPA4143 quad work well up to 250kHz at max output level or up to 1MHz at lower levels.