參數(shù)資料
型號(hào): MB15F73ULPFT
廠商: FUJITSU LTD
元件分類(lèi): XO, clock
英文描述: Dual Serial Input PLL Frequency Synthesizer
中文描述: PLL FREQUENCY SYNTHESIZER, 2250 MHz, PDSO20
封裝: PLASTIC, TSSOP-20
文件頁(yè)數(shù): 13/27頁(yè)
文件大小: 152K
代理商: MB15F73ULPFT
MB15F73UL
13
I
PHASE COMPARATOR OUTPUT WAVEFORM
LD Output Logic
Notes :
Phase error detection range
=
2
π
to
+
2
π
Pulses on Do
IF/RF
signals during locking state are output to prevent dead zone.
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
fr
IF
/
RF
fp
IF
/
RF
LD
D
o
IF
/
RF
t
WU
t
WL
D
o
IF
/
RF
H
L
L
H
Z
Z
(FC bit
=
High)
(
FC bit
=
Low
)
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