how to increase the gain in a charge scaling DAC

[maalma]

i have a charge scaling DAC and i want to increase its gain by several factors (x2 x4 x8 and x16), my question is how can realise this??

PS: in my application the converter is a 9bits DAC)

i'm a new commer in the analog design world, can anybody help me plz
thank you

 

[lladnar23]

Well.... You could do it with an OTA, or you could do something similar to a bucket-brigade charge transfer method. Look up the VLSI 2008 paper by Kenet Inc, or the recent paper by Hu & Murmann for more info on those methods.

Without an active device of some sort, though, I'm not sure you can get voltage amplification since charge doesn't like to move to a higher potential without some coersion...

 

[maalma]

thank you for your help, but can you give me the full title of these papers, or if you have them can you upload them for me??

i need more details plzzzzz

Thanks,
maalma