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Old 12th January 2005, 03:29 PM   #1
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Has anyone used a led on pin 9 to monitor thermal shutdown? How is it wired
end connected to pin 9 and one end to pin 6?

What's the bandwidth for a voltage gain of 21?
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Old 12th January 2005, 03:41 PM   #2
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All the info you need is in the datasheet...
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Old 12th January 2005, 04:27 PM   #3
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Is that figure 10 on the datasheet but without 74hct04?

I see gain-bandwidth product and slew rate vs temperate but not the bandwidth at a certain gain.
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Old 12th January 2005, 04:33 PM   #4
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I suspect they use the gate to get clean switching, the e/s pin output may be a little messy to drive the LED direct. The pdf is on my other machine, but I seem to remember that gain v. frequency is on the first page of graphs.
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Old 12th January 2005, 04:44 PM   #5
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gain v. frequency is not on the datasheet I have.

Under figure 4 it reads" External logic circuitry or an led can be used to indicate if the output has been thermally shutdown"
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Old 12th January 2005, 05:01 PM   #6
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I will have a look later when I get back home.
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Old 12th January 2005, 07:50 PM   #7
Alcaid is offline Alcaid  Norway
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Gain vs. Freq. and phase:
Attached Images
File Type: jpg gb.jpg (29.4 KB, 187 views)
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Old 12th January 2005, 09:58 PM   #8
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Thanks mate, I was fairly sure it wasn't my imagination!
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Old 12th January 2005, 10:17 PM   #9
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My apologies, I was wrong.
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Old 12th January 2005, 10:20 PM   #10
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No probs. Sometimes we all can't see the wood for the trees...
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