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Recommendation for op-amp?

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chihwt2003

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Hi all,

Can anyone please give some suggestion on what type of opamp is suitable to be build following these specifications:

1) VCC=3 to 5V
2) Rail to rail input and output stage. D-range is about VCC-0.4V for input and output.
3) THD < 0.1% for 20Hz, 1kHZ and 25kHz.
4.) GBW > 1MHz
5.) Open loop gain , 50~80dB

Thx.

Regards,
CW
 

newanalog

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read some paper writen by huijsing
 

simon110

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telescopic gain boosted op amp is a good choice, you can read some book such as analysis and design of analog integrated circuit 4th edition P.R.Gray, in additon, some final reports of EECS 240 are practical
 

ferrite

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techie said:
Try microchip MCP601

i think he is talking about how to design such a chip, what config to use, etc.
 

avinash

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just go for complimentary input folded cascode opamp.study material and design constraints could be seen from the book by li,baker,boyce.
 

newcpu

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Search some documents from IEEE. There maybe some helpful papers.
 

nagula suresh

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u can try for two stage opamp,which will give high gain.,
and the gbw is less than 1mhz is easily achievable.
 

beckchm

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huijsing has the classical paper about rail configuration
 

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