power opamp

Jay Sompura

Other Parts Discussed in Thread: LM3886

hello there,

i m searching for a power opamp and i found LM12. it is best to use in my project....but it is obsolete so please suggest me an ic which has more or less the same configuration as that of LM12.

thanking u!!

regards

jay sompura

over 12 years ago

0 Donald Jones over 12 years ago

TI__Mastermind 22610 points

You can search the in the Amplifiers forum for 'LM12 Substitute' (Thread ID:187556) to see an earlier discussion regarding pro and cons of several alternate devices..

0 Thomas Kuehl over 12 years ago

TI__Guru* 93105 points

Hi Jay,

Please see the thread that Donald has recommended. If then you have questions about any of the alternate power operational amplifier recommendations, please let us know.

Regards, Thomas

PA - Linear Applications Engineering

0 Toyojiro Naokawa over 12 years ago in reply to Thomas Kuehl

TI__Intellectual 1240 points

Hello Jay-san,

LM12 is already obsoleted but we have companion device in Power Audio amp utilising same archtecture with LM12 calling SPike protection. LM3886T was modified from LM12 for Audio power amp application. If you need more output current, you may use LM3886T in parallel connection. LM3886T is not unity gain stable amplifier though with some configuration, you can make unity gain configuration. I can tell you the cinfiuguration if you need. Please check LM3886T and if this device meet your requirement, we can talk in more detail.

Best regards

T NAOKAWA

0 Donald Jones over 12 years ago in reply to Toyojiro Naokawa

TI__Mastermind 22610 points

The post referenced above (LM12 Substitute) has several replies suggesting the following list as being the closest, but certainly not exact, replacement ...

0 Toyojiro Naokawa over 12 years ago in reply to Donald Jones

TI__Intellectual 1240 points

Hi,

Listed devices are not exactly same though can be replaceable with some modification and depending on load condition. One of big feature of LM12 is device protection archtecture names Spike protection. Please reffere attached URL about Spike protection.1440.AN-898(Spike Protection).pdf. LM3886 and LM3876 take the same archtecture as LM12. This very robust protection way compare with usual SOA protection.

Best regards

T NAOKAWA