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loveice
Joined: 19 Nov 2004
Posts: 4
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 13 Dec 2004 10:11 the bandgap reference use cross-coupled quad of devices |
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| Could anyone give me some information about the bandgap reference use cross-coupled quad of devices?Especially how to calculate the Iout.
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Fom
Joined: 10 Mar 2004
Posts: 760
Helped: 56
Location: Taiwan
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| 13 Dec 2004 10:48 Re: the bandgap reference use cross-coupled quad of devices |
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| What kind of Iout you want to calculate. This structure is used to decrease systematic mismatch caused by gradient of temperature or process parameters.
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loveice
Joined: 19 Nov 2004
Posts: 4
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| 14 Dec 2004 2:14 the bandgap reference use cross-coupled quad of devices |
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| The Iout is mirrored to the differential amplifier as the current source.Could you give me some information about this systematic.
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rfsystem
Joined: 25 Feb 2002
Posts: 798
Helped: 85
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| 14 Dec 2004 8:26 Re: the bandgap reference use cross-coupled quad of devices |
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| Is that a cell containing 4 bipolars stacked in 2 layers and have some area ratio? Or is that a simple 1 to 3 ratio and layout as a quad?
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