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参数资料
| 型号： | M680-02-AC-AJ |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | XO, clock |
| 英文描述： | VOLTAGE CONTROLLED CLOCK SAW OSCILLATOR, 672.16 MHz |
| 文件页数： | 1/4页 |
| 文件大小： | 200K |
| 代理商： | M680-02-AC-AJ |
M680-02 Datasheet Rev 1.0
Revised 19Sep2003
Integ r ated Circuit Systems , Inc. ● Comm unications Modules ● www.icst.com ● tel (508) 852-5400
M680-02
DUAL SAW, SELECTABLE FREQUENCY VCSO
Prelimina r y Inf o r m ation
GENERAL DESCRIPTION
The M680-02 is a dual SAW, selectable frequency
VCSO frequency source for low-jitter clock
generation. An integrated SAW (surface
acoustic wave) delay line implements the
high-Q VCO (voltage controlled oscillator)
function, which results in low output phase
noise and very low jitter. The M680-02 is available in
a range of center frequencies from 500 to 700MHz.
Minimum pull-range is
±50 ppm (wider pull-range is
available). The M680-02 is well suited for phase-locked
loop implementations, clock and data recovery circuits,
and other timing applications in telecom and optical
fiber networking systems (e.g., OC-48, OC-192).
FEATURES
◆ Two integrated SAW devices
◆ Selectable output frequency
◆ Supports multi-rate optical interface requirements
◆ VCSO center frequencies from 500 to 700 MHz
(Specify center frequency at time of order)
◆ Low phase jitter 0.37ps rms typical (12kHz to 20MHz)
◆ Low phase noise -70dBc/Hz @ 1kHz offset typical
◆ Differential 3.3V LVPECL output
◆ Single 3.3V power supply
◆ Small 5 x 7mm SMT (surface mount) package
PIN ASSIGNMENT (5 x 7mm SMT)
Figure 1: Pin Assignment
BLOCK DIAGRAM
Figure 2: Block Diagram
Sample of Available Output Frequencies
VCSO Center Frequency1 (MHz)
Note 1: Specify VCSO center frequency at time of order.
Applications
622.0800
SONET/SDH
625.0000
Gigabit Ethernet
644.5313
Gigabit Ethernet FEC
669.3265
SONET/SDH FEC
F_SEL
VIN
FOUT
nFOUT
SAW Delay Line
Phase
Shifter
SAW Delay Line
Phase
Shifter
M680
VCSO
M680-02
M680-02 Dual SAW, Selectable Frequency VCSO
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