electronics forum

Rules | Recent posts | topic RSS | Search | Register  | Log in

Need unity gain frequecy of 0.25um CMOS?


Post new topic  Reply to topic    EDAboard.com Forum Index -> ASIC Design Methodologies & Tools (Digital) -> Need unity gain frequecy of 0.25um CMOS?
Author Message
dd2001



Joined: 14 Apr 2002
Posts: 282


Post25 Jun 2003 1:02   

0.25um cmos foundry


Hi, anyone knows f(t) (nuity gain frequecy) of 0.25um CMOS and BiCMOS?

Are there big differences for f(t) in CMOS and BiCMOS?
Back to top
RC13



Joined: 24 Apr 2002
Posts: 125


Post27 Jun 2003 3:57   


the unity gain frequency for certain process can vary from foundry to foundry,

eg. for CMOS, with channel length, L,

L | CSM | UMC
---------------------
---------------------
0.25 | 39G | 30G
---------------------
0.18 | 60G | 45G
---------------------
0.13 | 80G | 105G

i don't about the BiCMOS, but it should be higher.

anyone can provide information about ft for other foundries? thanks.
Back to top
Google
AdSense
Google Adsense




Post27 Jun 2003 3:57   

Ads




Back to top
md



Joined: 17 Jul 2001
Posts: 21


Post27 Jun 2003 6:12   


You can simulate the ft frequency of the transistors. Bias the transistor in strong saturation(mos) or active region(bjt) then apply a small signal sinusoid to the gate or base. Sweep the frequency of the sinusoid, and check for the current gain. The frequency at which the small signal current gain is "1", is your ft.

Ft of the bjts are much higher than that of mosfets.

md
Back to top
dd2001



Joined: 14 Apr 2002
Posts: 282


Post28 Jun 2003 15:12   

BiCMOS


What about BiCMOS unity gain frequecy? for 0.35, 0.25, 0.18


Thanks
Back to top
adanshen



Joined: 03 Apr 2003
Posts: 33


Post09 Jul 2003 9:55   


I don't think this is a good question,
bicmos support mos and bipolar,
so the mos part may be still slow,
and the fast part is similar to bipolar
process
Back to top
Arabic versionBulgarian versionCatalan versionCzech versionDanish versionGerman versionGreek versionEnglish versionSpanish versionFinnish versionFrench versionHindi versionCroatian versionIndonesian versionItalian versionHebrew versionJapanese versionKorean versionLithuanian versionLatvian versionDutch versionNorwegian versionPolish versionPortuguese versionRomanian versionRussian versionSlovak versionSlovenian versionSerbian versionSwedish versionTagalog versionUkrainian versionVietnamese versionChinese version
Post new topic  Reply to topic    EDAboard.com Forum Index -> ASIC Design Methodologies & Tools (Digital) -> Need unity gain frequecy of 0.25um CMOS?
Page 1 of 1 All times are GMT + 1 Hour
Similar topics:
what is phase ,frequency spectrum ,gain ,unity gain? (2)
Gain Vs Frequecy (3)
Op amp DC gain, unity gain frequency (1)
Any diff of Gain BandWidth Product and Unity Gain BandWidth? (4)
Unity Gain? (5)
Unity Gain Bandwidth (4)
unity gain freq. (2)
unity gain frequency (5)
Unity gain frequency (2)
Unity gain buffer (5)


Abuse || Administrator || Moderators || Support us || sitemap
topic RSS