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Hi,erild
Could you provide some paper or reference for me to study why B≧3 surely is better than using just a diode?
And Could you tell me how to simply calculate the Ic? because the shape of PNP and MOSFET is not same,and how to define the "fully on Id" of MOSFET,Id is depend on the Vgs...
thank you very much,erild
yes,it's very easy to make the VPNP B=Ic/Ib >=20. but in CMOS process VPNP is the parasitic transistor.
we concern on Lateral PNP more.but B=Ic/Ib of LPNP is less than 10. In my simulation in tsmc40nm technology, the B=Ic/Ib of LPNP is no more than 3.
I decress the Ic...
thank you,erild
the desciption you quote has the assumption as the red word shows.
yes, diode-connected transistor can look as ideal diode at the condition that "a small fraction of the current flows through the base"
but I means that the assumption isn't real, Ib almost equal to Ic and so it...
Hi,checkmate
yes,we use the nowday typical CMOS technology,example tsmc p-sub and n-well CMOS technology. they build PNP : p-plus in n-well sitting on substrate.
this PNP transistor is built as lateral PNP,it also has parasitic vertical PNP .
all the design of bandgap reference in analog...
Could anybody help me about this question:
what is the difference between the Diode and diode connected transistor.
for example,in the bandgap design,we use the PNP with its base and colector connect to ground.
what's the difference to the simple PN junction.
Design of 10 bit DAC
Maybe Segmented current-steering DAC that uses Binary Thermometer Decoder
Is there 5 LSB use thermometer code and 5 MSB use binary code,or it could be either 6+4 or 7+3.which one to take? are there any calculations for that? plz send me if there are any papers for...
hello friends
we now should design of 10 bit DAC with 2.5v process.Power and noise are the most important things we need conside.INL, DNL under 1 LSB
If we use the R-2R structure,the mismatch and power may limit us to attach the requirement.
Can you give me some advices about what...
hello friends
we now should design of 10 bit DAC with 2.5v process.Power and noise are the most important things we need conside.INL, DNL under 1 LSB
If we use the R-2R structure,the mismatch and power may limit us to attach the requirement.
Can you give me some advices about what...
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