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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% ], U$ K# t. t7 {0 ~& R: D/ X
The device dynamic power requirements can be calculated by the equation:
7 `) F) d/ ], V* j, _: |# y+ }0 MPD = (CL + CPD) x VCC2 x f- h2 y, J$ c# {
where: % H/ }! |# D) J8 `. _
PD = Power dissipated in mW
; L0 p- O4 y- _CL = Total load capacitance present at the output in pF
" e6 L! H+ J- i6 t) hCPD = A measure of internal capacitances, called power dissipation capacitance, given in pF! P9 Q( q9 ^1 Z
VCC = Supply voltage in volts& A7 g0 [- a) r! S+ V/ |
f = Frequency in MHz
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{:soso_e104:} |
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