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參數(shù)資料
| 型號： | MT9046AN |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | T1/E1 System Synchronizer with Holdover |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO48 |
| 封裝： | 0.300 INCH, MO-118AA, SSOP-48 |
| 文件頁數(shù)： | 12/34頁 |
| 文件大?。?/td> | 508K |
| 代理商： | MT9046AN |
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MT9046
Data Sheet
12
Zarlink Semiconductor Inc.
Note that the resulting jitter transfer functions for all combinations of inputs (8 kHz, 1.544 MHz, 2.048 MHz) and
outputs (8 kHz, 1.544 MHz, 2.048 MHz, 4.096 MHz, 8.192 MHz, 16.384 MHz, 19.44 MHz) for a given input signal
(jitter frequency and jitter amplitude) are the same.
Since intrinsic jitter is always present, jitter attenuation will appear to be lower for small input jitter signals than for
large ones. Consequently, accurate jitter transfer function measurements are usually made with large input jitter
signals (e.g., 75% of the specified maximum jitter tolerance).
Frequency Accuracy
Frequency accuracy is defined as the absolute tolerance of an output clock signal when it is not locked to an
external reference, but is operating in a free running mode. For the MT9046, the Freerun accuracy is equal to the
Master Clock (OSCi) accuracy.
Holdover Accuracy
Holdover accuracy is defined as the absolute tolerance of an output clock signal, when it is not locked to an external
reference signal, but is operating using storage techniques. For the MT9046, the storage value is determined while
the device is in Normal Mode and locked to an external reference signal.
The absolute Master Clock (OSCi) accuracy of the MT9046 does not affect Holdover accuracy, but the change in
OSCi accuracy while in Holdover Mode does.
Capture Range
Also referred to as pull-in range. This is the input frequency range over which the synchronizer must be able to pull
into synchronization. The MT9046 capture range is equal to
±
230 ppm minus the accuracy of the master clock
(OSCi). For example, a 32 ppm master clock results in a capture range of 198 ppm.
Lock Range
This is the input frequency range over which the synchronizer must be able to maintain synchronization. The lock
range is equal to the capture range for the MT9046.
Phase Slope
Phase slope is measured in seconds per second and is the rate at which a given signal changes phase with respect
to an ideal signal. The given signal is typically the output signal. The ideal signal is of constant frequency and is
nominally equal to the value of the final output signal or final input signal.
Time Interval Error (TIE)
TIE is the time delay between a given timing signal and an ideal timing signal.
OutputT1
InputT1
A
–
20
------
×
10
20
=
OutputT1
20
–
×
10
2.5UI T1
)
=
=
OutputE1
OutputT1
488ns
(
)
)
-644ns
3.3UI T1
)
=
×
=
OutputE1
OutputT1
1UIE1
)
)
-1UIT1
×
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT9046AN1 | 制造商:Microsemi Corporation 功能描述:FRAMER E1 /T1 3.3V 48SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SYNCHRONIZER T1/E1 48SSOP 制造商:Microsemi Corporation 功能描述:IC SYNCHRONIZER T1/E1 48SSOP |
| MT9046ANR1 | 制造商:Microsemi Corporation 功能描述:FRAMER E1 /T1 3.3V 48SSOP - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SYNCHRONIZER T1/E1 48SSOP 制造商:Microsemi Corporation 功能描述:IC SYNCHRONIZER T1/E1 48SSOP |
| MT9048 | 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:Standard Type |
| MT90489 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| MT904CP | 制造商:MITEL 功能描述: |
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