參數(shù)資料
型號: MB15F72ULPFT
廠商: FUJITSU LTD
元件分類: XO, clock
英文描述: Dual Serial Input PLL Frequency Synthesizer
中文描述: PLL FREQUENCY SYNTHESIZER, 1300 MHz, PDSO20
封裝: PLASTIC, TSSOP-20
文件頁數(shù): 13/27頁
文件大?。?/td> 279K
代理商: MB15F72ULPFT
MB15F72UL
13
I
PHASE COMPARATOR OUTPUT WAVEFORM
fr
IF
/
fr
RF
fp
IF
/
fp
RF
LD
Do
IF
/
Do
RF
t
WU
t
WL
D
o
IF
/
Do
RF
Z
H
L
Z
H
L
(FC bit
=
"1")
(FC bit
=
"0")
Notes :
Phase error detection range
=
2
π
to
+
2
π
Pulses on Do
IF
/Do
RF
signals are output to prevent dead zone during locking state.
LD output becomes low when phase error is t
WU
or more.
LD output becomes high when phase error is t
WL
or less and continues to be so for three cycles
or more.
t
WU
and t
WL
depend on OSC
IN
input frequency as follows.
t
WU
2/fosc : e.g. t
WU
156.3 ns when fosc
=
12.8 MHz
t
WU
4/fosc : e.g. t
WL
312.5 ns when fosc
=
12.8 MHz
IF-PLL section
RF-PLL section
LD output
Locking state/Power saving state
Locking state/Power saving state
H
Locking state/Power saving state
Unlocking state
L
Unlocking state
Locking state/Power saving state
L
Unlocking state
Unlocking state
L
LD Output Logic
相關(guān)PDF資料
PDF描述
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