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Old 8th June 2015, 02:57 AM   #1
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Default LSK489 for B1 buffer?

Is LSK489 good enough for B1 buffer?
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Old 8th June 2015, 08:07 AM   #2
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no answers on this?
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Old 8th June 2015, 09:48 AM   #3
Zen Mod is online now Zen Mod  Serbia
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link , please

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Old 8th June 2015, 10:07 AM   #4
AndrewT is offline AndrewT  Scotland
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Read R.Cordell.
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Old 8th June 2015, 10:09 AM   #5
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Quote:
Originally Posted by Zen Mod View Post
link , please

http://www.linearsystems.com/assets/...ets/LSK489.pdf
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Old 8th June 2015, 10:11 AM   #6
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Quote:
Originally Posted by AndrewT View Post
Read R.Cordell.
Bob cordell speaks about its application in buffer as possible but any cons in using it? I feel it has the least Ciss.
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Old 8th June 2015, 11:21 AM   #7
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due to wimpy xconductance , it'll have output impedance on highish side , at least comparing to it's LSK170 cousin

compare xconductances , translate that inversely to impedance ratio
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Old 8th June 2015, 05:10 PM   #8
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so the min output impedance said by Nelson is 100ohms at best and some say it goes till 1k so if you take the ratio of Gfs between the 2sk170 / LSK489 which is 22mS / 1.5ms which is 14.66 so the best output imp would be 1466 ohms and worst being 14.6k? so LSK489 unfit for B1 buffer?
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Old 9th June 2015, 04:29 PM   #9
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any suggestions or replies please.. can I still manage with the LSK489? I like its capacitance very low value hence considerably linear than SK170?

I see Papa speaking of LSK489 but couldn`t remember for which one.
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Old 9th June 2015, 04:32 PM   #10
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considering that Papa put fool-proof part on output of B1 - 1K resistor , consider that you can make buffer with them , without any consequence

just decrease that resistor to , say, 47 ohms and enjoy
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