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本帖最后由 超級狗 于 2013-7-31 22:53 编辑
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CMOS Logic Dynamic Power
3 m* R5 t* Y! g8 i7 T: Q. C5 \The device dynamic power requirements can be calculated by the equation:
. D& r1 B6 U9 H/ M# Z* lPD = (CL + CPD) x VCC2 x f
$ s [$ U4 Q9 k( Fwhere:
. e) _. I( Z! X' H( e, cPD = Power dissipated in mW
# V: T* v Y9 c! mCL = Total load capacitance present at the output in pF
, B7 v: ^* C- {( c8 a$ _, O* S5 RCPD = A measure of internal capacitances, called power dissipation capacitance, given in pF/ J% I1 n6 [% ]6 H
VCC = Supply voltage in volts
6 L* Z: Q5 m ?+ m6 k0 i( H! M: T+ ~( sf = Frequency in MHz
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# w& U5 \. k$ s3 |: z{:soso_e104:} |
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