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Old 13th February 2010, 07:53 PM   #1
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Question What's the difference Between LME49600 and LME49610?

I found in national web "Performance Audio"class no LME49610. http://www.national.com/cat/index.cgi?i=i//305
BUT:At the LME49610 web :LME49610 - High Performance, High Fidelity, High Current Audio Buffer
It said is in "Performance Audio"
Why ? it is not on sale now?
And What's the difference Between LME49600 and LME49610?
Thanks.
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Old 15th February 2010, 02:18 AM   #2
BrianL is offline BrianL  United States
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The LME49610 has a higher quiescent current and somewhat wider bandwidth, based on the summary on the web site. It also operates on higher power supply voltages (+/-22V max vs. +/-18V). There may be other differences if you carefully compare the two datasheets.
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Old 15th February 2010, 05:27 AM   #3
tomchr is online now tomchr  United States
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I'm not sure what you mean by "why ? is not for sale". It is a released part. According to National both Digikey and Future have them in stock. See the Order page in the LME49610 product page.

As far as the difference between LME49600 and LME49610, it looks to me like National is screening the parts out that can handle the higher supply voltage and selling them as '610s. The ones that start drifting off spec above 18 V are sold as '600s. That would be my guess. They do the same with the LME49720 and LME49722 supposedly.

~Tom

Last edited by tomchr; 15th February 2010 at 05:30 AM.
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Old 16th February 2010, 03:16 AM   #4
BrianL is offline BrianL  United States
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It looks like they needed a higher voltage buffer to go with the higher voltage op-amp. I agree with Tom that they appear suspiciously alike.
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Old 20th September 2011, 04:30 AM   #5
eccdbb is offline eccdbb  United States
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For the LME49610, I notice that the Vout margins are smaller, and Isc-out is 750ma. Iout is still 250ma though. Has anyone used both? What is the rms current output?
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