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M908-01 데이터시트 PDF




Integrated Circuit System에서 제조한 전자 부품 M908-01은 전자 산업 및 응용 분야에서
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부품번호 M908-01 기능
기능 Vcso-based Gbe Clock Generator
제조업체 Integrated Circuit System
로고 Integrated Circuit System 로고


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M908-01 데이터시트, 핀배열, 회로
Integrated
Circuit
Systems, Inc.
Preliminary Information
M908-01
VCSO BASED GBE CLOCK GENERATOR
GENERAL DESCRIPTION
The M908-01 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. It is ideal for
Gigabit Ethernet. An output clock
frequency of 156.25MHz (with the
M908-01-156.2500) is provided from
eight LVPECL clock output pairs. The accuracy of the
output frequency is assured by the internal PLL that
phase-locks the internal VCSO to the reference input
frequency (25MHz for the M908-01-156.2500). 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.
PIN ASSIGNMENT (9 x 9 mm SMT)
XTAL_2
FOUT6
nFOUT6
FOUT7
nFOUT7
VCC
DNC
DNC
DNC
28
29
30
31 M 9 0 8 - 0 1
32
33 ( T o p V i e w )
34
35
36
18
17
16
15
14
13
12
11
10
nFOUT2
FOUT2
nFOUT1
FOUT1
GND
nFOUT0
FOUT0
VCC
GND
FEATURES
156.25MHz output clock frequency (M908-01-156.2500)
Eight identical LVPECL output pairs
Jitter 0.7ps RMS (over 12kHz-20MHz)
Ideal for Gigabit Ethernet clock reference
Output-to-output skew < 100ps
External XTAL or LVCMOS reference input
Integrated SAW (surface acoustic wave) delay line
Single 3.3V power supply
Small 9 x 9 mm SMT (surface mount) package
Figure 1: Pin Assignment
Output Frequency Configuration (M908-01-156.25)
Ref Clock
Frequency
http://www.DataSheet4U.net/
(MHz)
PLL
Ratio
Output
Frequency
(MHz)
Application
25 25/4 156.25 Gigabit Ethernet
Table 1: Output Frequency Configuration (M908-01-156.25)
SIMPLIFIED BLOCK DIAGRAM
M908-01-156.25
External
Crystal
or
Reference
Clock Input
(25MHz)
XTAL
OSC
Divider
VSCO
Frequency
Multiplying
PLL
External Loop Filter
FOUT7
nFOUT7
FOUT6
nFOUT6
FOUT5
nFOUT5
FOUT4 LVPECL
nFOUT4 Output
FOUT3 Clock Pairs
nFOUT3 (156.25MHz)
FOUT2
nFOUT2
FOUT1
nFOUT1
FOUT0
nFOUT0
Figure 2: Simplified Block Diagram
M908-01 Datasheet Rev 1.2
Revision 013003
M908-01 VCSO Based GbE Clock Generator
Integrated Circuit Systems, Inc. Communications Modules www.icst.com tel (508) 852-5400
datasheet pdf - http://www.DataSheet4U.net/




M908-01 pdf, 반도체, 판매, 대치품
Integrated
Circuit
Systems, Inc.
M908-01
VCSO BASED GBE CLOCK GENERATOR
Preliminary Information
ABSOLUTE MAXIMUM RATINGS1
Symbol Parameter
Rating
Unit
VI Inputs
-0.5 to VCC +0.5
V
VO Outputs
-0.5 to VCC +0.5
VCC Power Supply Voltage
4.6
TS Storage Temperature
-45 to +100
oC
Table 4: Absolute Maximum Ratings
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the
device. These ratings ard stress specifications only. Functional operation of product at these conditions
or any conditions beyond those listed in Recommended Conditions of Operation, DC Characteristics, or
AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect product reliability.
RECOMMENDED CONDITIONS OF OPERATION
Symbol Parameter
VCC Positive Supply Voltage
TA Ambient Operating Temperature
Min
3.135
Typ
3.3
Max Unit
3.465
V
0 +70 oC
Table 5: Recommended Conditions of Operation
http://www.DataSheet4U.net/
M908-01 Datasheet Rev 1.2
4 of 6
Revision 013003
Integrated Circuit Systems, Inc. Communications Modules www.icst.com tel (508) 852-5400
datasheet pdf - http://www.DataSheet4U.net/

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관련 데이터시트

부품번호상세설명 및 기능제조사
M908-01

Vcso-based Gbe Clock Generator

Integrated Circuit System
Integrated Circuit System

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