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M670-672.1600 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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M670-672.1600 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 6 page M670 Datasheet Rev 12.1 Revised 09Apr2003 Integ r ated Circuit Systems , Inc. ● Comm unications Modules ● www.icst.com ● tel (508) 852-5400 M670 VOLTAGE CONTROLLED SAW OSCILLATOR Integrated Circuit Systems, Inc. Product Data Sheet GENERAL DESCRIPTION The M670 is a VCSO (Voltage Controlled SAW Oscillator) frequency source for low-jitter clock generation. Its integrated SAW (surface acoustic wave) delay line provides low phase jitter. The M670 is available in a range of center frequencies. Minimum pull-range is ±50 ppm (wider pull-range available). The M670 is well suited for phase-locked loop implementations, clock and data recovery circuits, and other timing applications for the telecom and optical fiber networking markets (e.g., OC-48, OC-192). FEATURES ◆ VCSO center frequencies from 155 to 700 MHz (Specify center frequency at time of order) ◆ Low phase jitter 0.19ps rms typical (50kHz-80MHz) ◆ Low phase noise -70dBc/Hz @ 1kHz offset ◆ Differential 3.3V LVPECL output ◆ Single 3.3V power supply ◆ Very 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 Table 1: Sample of Available Output Frequencies M670 ( T op View) CLK_EN VIN FOUT nFOUT SAW Delay Line Phase Shifter M670 M670 Voltage Controlled SAW Oscillator |
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