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參數資料
| 型號： | M906-02-175.0000 |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 175 MHz, OTHER CLOCK GENERATOR, CQCC36 |
| 封裝： | 9 X 9 MM, CERAMIC, LCC-36 |
| 文件頁數： | 1/8頁 |
| 文件大?。?/td> | 322K |
| 代理商： | M906-02-175.0000 |
M906-02 Datasheet Rev 0.7
Revised 30Jul2004
Integr ated Circuit Systems , Inc. ● Ne tw o r ki ng & C o mmun ica t io ns ● ww w. icst.com ● tel (508 ) 85 2-5 400
M906-02
VCSO BASED CLOCK GENERATOR
Prelimina r y Inf o r m ation
GENERAL DESCRIPTION
The M906-02 is a PLL (Phase Locked Loop) based
clock generator that uses an
internal VCSO (Voltage Controlled
SAW Oscillator) to produce a very
low jitter output clock. From the
M906-02-155.5200
, an output clock
frequency of 155.52 or 77.76MHz is
provided from six LVPECL clock
output pairs. (Other frequencies are available; consult
factory.) The accuracy of the output frequency is
assured by the internal PLL that phase-locks the
internal VCSO to the reference input frequency
(19.44MHz for the M906-02-155.5200). The input reference
can either be an external crystal, utilizing the internal
crystal oscillator, or a stable external clock source
such as a packaged crystal oscillator.
FEATURES
◆ Output clock frequency range 75MHz to 175MHz
(Consult factory for frequency availability)
◆ Selectable divider chooses one of two frequencies
◆ Six identical LVPECL output pairs (same frequency)
◆ Jitter 0.7ps rms (at 155.52MHz, over 12kHz-20MHz), typ.
◆ Ideal for OC-48/STM-16 clock reference
◆ Output-to-output skew < 100ps
◆ External XTAL or LVCMOS reference input
◆ Selectable external feed-through clock input
◆ STOP clock control (Logic 1 stops output clocks)
◆ Integrated SAW (surface acoustic wave) delay line
◆ Single 3.3V power supply
◆ Small 9 x 9 mm SMT (surface mount) package
PIN ASSIGNMENT (9 x 9 mm SMT)
Figure 1: Pin Assignment
SIMPLIFIED BLOCK DIAGRAM
Figure 2: Simplified Block Diagram
Example Output Frequency Configurations
(M906-02-155.5200)
Ref Clock
Frequency
(MHz)
VCSO
Frequency
(MHz)
P Divider
Value
Output
Frequency
(MHz)
19.44
155.52
1
155.52
2
77.76
nOP
OP
_OUT
nO
P_
OP
M906-02-155.52 (Other Frequencies Available)
Divider
Select
External
Loop Filter
M906-02 VCSO Based Clock Generator
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