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Current source (Read 824 times)

vivekrc New Member Offline Posts: 6	Current source Sep 14^th, 2004, 7:21pm How could I design a current source using the 0.13 micron technologhy libraries which can give me a constant DC current of 1m A? I tried the current mirror......any suggestions? Waiting on ur replies - Vivek
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kokabanga Junior Member Offline Posts: 28	Re: Current source Reply #1 - Sep 15^th, 2004, 10:23am what is the exact problem? are you not having a scalable library or what? what is exact problem? anyways since u seem to need a current source...I wonder if u need a high enuf o/p resistance too...in that case anyway u may need to use a wide swing type current mirror anyways....anyways let see ...do reply man
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Vivek Chandrasekhar

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Re: Current source
Reply #2 - Sep 15^th, 2004, 1:22pm

The problem I am having is to generate a current source...using current mirror which can give me a output current of 1 mA. Also I need a high o/p resistance.

what is a wide swing current mirror?

Also I need to know which analysis do I need to use to find the exact current.

I need to use this current source in a current mode sample and hold circuit....which I have to fianlly put on layout.

Would really apprecaite if u could suggest me a way to get thro ....

- Vivek

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kokabanga Junior Member Offline Posts: 28	Re: Current source Reply #3 - Sep 15^th, 2004, 1:24pm please use chapter 4 from analysis and design of analog ICs by gray,meyer,hurst,lewis it is not easy to explain here rather impossible
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