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firsttimedesigning
Joined: 04 Jul 2007
Posts: 98
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 23 Oct 2007 6:22 Slew Rate |
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Does anyone know how to alleviate the effect of slew rate in a single ended telescopic op amp(please see
http://www.edaboard.com/viewtopic.php?p=911585#911585)?
So far i know i can use coupling transistors but i am not sure where to put them.
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
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23 Oct 2007 7:46 Re: Slew Rate |
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| slew rate can be improved by increasing the output current capacity of the amplifier or decreasing the load capacitor....
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akilpatrick
Joined: 27 Apr 2007
Posts: 13
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23 Oct 2007 21:12 Re: Slew Rate |
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Or you can improve slew rate performance by reducing the line loss in long cables. This is affected both by the DC loop loss, as well as frequency-dependant losses caused by skin effect in the cable.
Using an equalizer can help to restore lost high frequencies, in digital or analog signal transmission. There are lots of new ideas in this area... check out National Semiconductor's "Analog Design Show" for some ideas, or look at some of the line equalizer products from Intersil.
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robicyang
Joined: 28 Jul 2007
Posts: 32
Helped: 1
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24 Oct 2007 2:00 Re: Slew Rate |
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| A.Anand Srinivasan wrote: |
| slew rate can be improved by increasing the output current capacity of the amplifier or decreasing the load capacitor.... |
i think the tail current source in important, too.
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
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24 Oct 2007 3:20 Re: Slew Rate |
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| Quote: |
| i think the tail current source in important, too. |
yes of course... we can increase output current by increasing tail current only....[/quote]
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