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參數(shù)資料
| 型號： | ZL30414QGC |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | SONET/SDH Clock Multiplier PLL |
| 中文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 1 MM HEIGHT, MS-026ACD, TQFP-64 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大小： | 421K |
| 代理商： | ZL30414QGC |
ZL30414
Data Sheet
5
Zarlink Semiconductor Inc.
1.0 Functional Description
The ZL30414 is an analog phased-locked loop which provides rate conversion and jitter attenuation for
SONET/SDH OC-192/STM-64, OC-48/STM-16, OC-12/STM-4 and OC-3/STM-1 applications. A functional block
diagram of the ZL30414 is shown in Figure 1 and a brief description is presented in the following sections.
1.1 Frequency/Phase Detector
The Frequency/Phase Detector compares the frequency/phase of the input reference signal with the feedback
signal from the Frequency Divider circuit and provides an error signal corresponding to the frequency/phase
difference between the two. This error signal is passed to the Loop Filter circuit.
1.2 Lock Indicator
The ZL30414 has a built-in LOCK detector that measures frequency difference between input reference clock C19i
and the VCO frequency. When the VCO frequency is less than ±300 ppm apart from the input reference frequency
then the LOCK pin is set high. The LOCK pin is pulled low if the frequency difference exceeds ±1000 ppm.
1.3 Loop Filter
The Loop Filter is a low pass filter. This low pass filter ensures that the network jitter requirements are met for an
input reference frequency of 19.44 MHz. The corner frequency of the Loop Filter is configurable with an external
capacitor and resistor connected to the LPF pin and ground as shown in Figure 3.
Figure 3 - Loop Filter Elements
60
GND
Ground.
0 volt
61
VCC
Positive Analog Power Supply.
+3.3 V ±10%.
62
63
C622oP-A
C622oN-A
C622 Clock Output (LVPECL)
. These outputs provide a differential LVPECL
clock at 622.08 MHz. Unused LVPECL port should be left unterminated to
decrease supply current.
64
GND
Ground.
0 volt
65
NC
No internal bonding Connection. Leave unconnected.
Pin Description Table (continued)
Pin #
Name
Description
R
F
C
F
ZL30414
LPF
R
F
=8.2 k
,
C
F
=470 nF
Filter
Loop
Frequency
and Phase
Detector
VCO
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| ZL30414QGC1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:SONET/SDH Clock Multiplier PLL |
| ZL30414QGG1 | 制造商:Microsemi Corporation 功能描述:PB FREE SONET/SDH CLOCK MULTIPLIER PLL - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC PLL SONET/SDH CLK MULT 64TQFP 制造商:Microsemi Corporation 功能描述:IC PLL SONET/SDH CLK MULT 64TQFP |
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