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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Thu Feb 21, 2008 1:44 am Post subject: |
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For a given bandwidth, higher voltage signal will require a higher slew rate. Look carefully at those spec sheets. Sometimes that mega bandwidth is spec'd at 0.2Vpp! The amp doesn't have the slew rate to output that bandwidth at 1.4Vpp.
Scott
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Feb 21, 2008 2:00 am Post subject: |
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| tse wrote: | For a given bandwidth, higher voltage signal will require a higher slew rate. Look carefully at those spec sheets. Sometimes that mega bandwidth is spec'd at 0.2Vpp! The amp doesn't have the slew rate to output that bandwidth at 1.4Vpp.
Scott |
Ahh that's it. you have to read the fine print. I remember on the spec's for my Sony 1252 it says 1500x1200 at 38hz. Not all together usefull.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Feb 21, 2008 3:16 am Post subject: |
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| tse wrote: | For a given bandwidth, higher voltage signal will require a higher slew rate. Look carefully at those spec sheets. Sometimes that mega bandwidth is spec'd at 0.2Vpp! The amp doesn't have the slew rate to output that bandwidth at 1.4Vpp.
Scott |
Yes , This I know. I have looked over at least 25 different op amp spec sheets. Some times those high op amps sound good but there is more involved than just the spec'd highest bandwidth.
Athanasios
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Thu Feb 21, 2008 11:50 am Post subject: |
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In my experience NECs like a standard 0.7v signal.
If you run it hot, as the Moome DVI card does, and the Moome ISS card (until you adjust it down), then you will get blooming. I don't think reducing contrast compensated.
I think Moome should stick to the standard.
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kal
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Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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