@quantumvolt
Thank you very much for your detailed reply. I succeeded on working with LTC2440 ADC both using my own arduino spi code and linduino library code.
This link is very helpful for me:
http://www.linear.com/solutions/4537 .Thanks
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
Next step is modifiying LTC2983 code for my application
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/xwink.gif.pagespeed.ic.cldandycH0.png)