MC12181 View Datasheet(PDF) - Motorola => Freescale
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MC12181 Datasheet PDF : 9 Pages
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For the 2nd Order PLL: Vp
MC12181
Figure 10. Overall Transfer Function of the PLL
Vt
Ro
Co
+ ) ZLF(s)
RoCos 1
Cos
+ + + Vt(s)
TLF(s) Vp(s) 1 , Vp(s) Kp(s)ZLF(s)
For the 3rd Order PLL: Vp
Ro
Co
Vt
Ca
+ ) ) ) ZLF(s)
RoCos 1
CoRoCas2 (Co Ca)s
+ + + Vt(s)
TLF(s) Vp(s) 1 , Vp(s) Kp(s)ZLF(s)
For the 4th Order PLL: Vp
Ro
Co
Ca Rx
Vt
Cx
) ) (RoCos 1) (RxCxs 1)
+ ) ) ) ) ) ) ) ZLF(s) CoRoCaRxCxs3 [ (Co Ca)RxCx CoRo(Cx Ca) ] s2 (Co Ca Cx)s
+ + ) + TLF(s)
Vt(s)
Vp(s)
1
(RxCxs
1) , Vp(s)
Kp(s)ZLF(s)
Figure 11. Typical Charge Pump Current versus Temperature
(VCC = 5.5 V; VP = 6.0 V)
FIGURES 11 THRU 17 COULD NOT BE PROCESSED
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8
MOTOROLA RF/IF DEVICE DATA
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