參數(shù)資料
型號(hào)： MT9045
廠商： Zarlink Semiconductor Inc.
英文描述： T1/E1/OC3 System Synchronizer
中文描述： T1/E1/OC3系統(tǒng)同步
文件頁(yè)數(shù)： 19/34頁(yè)
文件大?。?/td> 495K
代理商： MT9045
MT9045
Data Sheet
19
Zarlink Semiconductor Inc.
Figure 10 - Power-Up Reset Circuit
Lock Indicator
The LOCK pin toggles at a random rate when the PLL is frequency locked to the input reference. In Figure 11 the
RC-time-constant circuit can be used to hold the high state of the LOCK pin.
Once the PLL is frequency locked to the input reference, the minimum duration of LOCK pin’s high state would be
32ms and the maximum duration of LOCK pin’s low state would not exceed 1 second. The following equations can
be used to calculate the charge and discharge times of the capacitor.
t
C
= - R
D
C ln(1 – V
T+
/V
DD
) = 240
μ
s
t
C
= Capacitor’s charge time
R
D
= Dynamic resistance of the diode (100
)
C = Capacitor value (1
μ
F)
V
T+
= Positive going threshold voltage of the
Schmitt Trigger (3.0 V)
V
DD
= 3.3 V
t
D
= - R C ln(V
T-
/V
DD
) = 1.65 seconds
t
D
= Capacitor’s discharge time
R = Resistor value (3.3 M
)
C = Capacitor value (1
μ
F)
V
T-
= Negative going threshold voltage of the
Schmitt Trigger (2.0 V)
V
DD
= 3.3 V
+3.3V
RST
R
P
1k
C
10nF
R
10k
MT9045
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9045AN 制造商:Microsemi Corporation 功能描述:
MT9045AN1 制造商:Microsemi Corporation 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Rail/Tube 制造商:Microsemi Corporation 功能描述:T1/E1/OC3 SYSTEM SYNCHRONIZER
MT9045ANR1 制造商:Microsemi Corporation 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Tape and Reel 制造商:Microsemi Corporation 功能描述:iB FREE T1/E1/OC3 SYSTEM SYNCHRONIZER 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Tape and Reel
MT9046 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:SONET/SDH Clock Multiplier PLL
MT9046AN 制造商:Microsemi Corporation 功能描述:
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