參數(shù)資料
型號: MC145230
廠商: Motorola, Inc.
英文描述: Dual PLL Frequency Synthesizers With DACs and Voltage Multipliers(帶DACs和電壓乘法器的雙PLL頻率合成器)
中文描述: 雙鎖相環(huán)頻率合成器與DAC和電壓倍增器(帶數(shù)模轉(zhuǎn)換器和電壓乘法器的雙鎖相環(huán)頻率合成器)
文件頁數(shù): 36/71頁
文件大小: 906K
代理商: MC145230
MC145225 MC145230
36
MOTOROLA RF/IF DEVICE DATA
Figure 32. Design Equations for the Second Order System
RoCos + 1
T(s) =
s2 + RoCos + 1
NCo
KpKv
=
s2 +
1
ω
o2
s + 1
2
ζ
ω
o
s + 1
2
ζ
ω
o
NCo
KpKv
=
1
ω
o2
ω
o =
NCo
KpKv
RoCo =
2
ζ
ω
o
ζ
=
ω
oRoCo
2
Co =
N
ω
o2
KpKv
Ro =
ω
oCo
2
ζ
Figure 33. Overall Transfer Function of the PLL
ZLF(s) =
Cos
RoCos + 1
Vt
Co
Vp
Ro
For the Second Order PLL:
For the Third Order PLL:
For the Fourth Order PLL:
Vt
Co
Vp
Ro
Ca
Vt
Co
Vp
Ro
Ca
Cx
TLF(s) =Vp(s)
Vt(s)= 1 ,
Vp(s) = Kp(s)ZLF(s)
ZLF(s) =
CoRoCas2 + (Co + Ca)s
RoCos + 1
TLF(s) =Vp(s)
Vt(s)= 1 ,
Vp(s) = Kp(s)ZLF(s)
ZLF(s) =
CoRoCaRxCxs3 + [(Co + Ca)RxCx + CoRo (Cx + Ca)] s2 + (Co + Ca + Cx)s
(RoCos + 1) (RxCxs + 1)
TLF(s) =Vp(s)
Vt(s)
,
Vp(s) = Kp(s)ZLF(s)
=
(RxCxs + 1)
1
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