LME 10/11/30/02 whats best for BJT? - diyAudio
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Old 30th April 2011, 10:27 PM   #1
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Default LME 10/11/30/02 whats best for BJT?

I have the LME49810 and LME49830.

what chip would be best to drive 2 pairs of 2sa5200/2sa1493 with MJE15032 as driver
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Old 1st May 2011, 04:30 PM   #2
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I vote for 49811 and 49810.
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Old 1st May 2011, 06:06 PM   #3
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Eventhough LME49830 can be tweaked for BJT
it is better to use the dedicated LME49810/11

I really recommend LME49810 before LME49811!!!
Why?
What the chip will do is to drive some transistors.
Now, 811 has 'only' 9 mA drive current typical.
While 810 has maximum 60 mA output drive current typical.
Go for LME49810. It has a good drive capacity.
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Old 3rd May 2011, 01:56 PM   #4
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With the driver stage present, we should not be worry too much. Do a simple calculation to see whether the current gain of driver and output stage is sufficient for 9 mA from 49811.

49810 has a nice feature - Baker clamp.
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Old 3rd May 2011, 02:47 PM   #5
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Quote:
Originally Posted by panson_hk View Post
With the driver stage present, we should not be worry too much.
True.
So maybe LME49811 will be sufficient.
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