M675 Schematic ( PDF Datasheet ) - Integrated Circuit Systems

Teilenummer	M675
Beschreibung	VOLTAGE CONTROLLED SAW OSCILLATOR
Hersteller	Integrated Circuit Systems
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Gesamt 6 Seiten Integrated Circuit Systems, Inc. Preliminary Information M675 VOLTAGE CONTROLLED SAW OSCILLATOR GENERAL DESCRIPTION The M675 is a VCSO (Voltage Controlled SAW Oscillator) 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 M675-01 is available in a range of center frequencies from 125 to 175 MHz. The M675-02 provides 500 to 700 MHz. Guaranteed minimum pull-range of ±100 ppm meets GbE requirements. (It also fully satisfies ±50 ppm minimum pull-range specification commonly required.) Industry-standard Kvco (VCO Gain) provides full replacement compati- bility. The M675 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., SONET/SDH). FEATURES ◆ Integrated SAW device ◆ M675-01 output frequencies from 125 to 175 MHz M675-02 output frequencies from 500 to 700 MHz (Specify center frequency at time of order) ◆ Industry-standard Kvco for full compatibility ◆ Low phase jitter 0.2ps rms typical for the M675-02 (50kHz to 80MHz) ◆ Differential 3.3V LVPECL output ◆ Single 3.3V power supply ◆ Small 5 x 7.5mm SMT (surface mount) package BLOCK DIAGRAM MM667705 PIN ASSIGNMENT (5 x 7.5mm SMT) M67755 (Top View) Figure 1: Pin Assignment Sample of Available Output Frequencies VCSO Center Frequencies1 (MHz) M675-01 M675-02 Applications 155.5200 622.0800 SONET/SDH 156.2500 625.0000 Gigabit Ethernet 161.1328 644.5313 Gigabit Ethernet FEC 167.3316 669.3266 SONET/SDH FEC Table 1: Sample of Available Output Frequencies Note 1: Specify VCSO center frequencies at time of order VIN CLK_EN SAW Delay Line Phase Shifter FOUT nFOUT Figure 2: Block Diagram M675 Datasheet Rev 0.4 Revised 16Nov2004 M675 Voltage Controlled SAW Oscillator Integrated Circuit Systems, Inc. ● Networking & Communications ● www.icst.com ● tel (508) 852-5400 Integrated Circuit Systems, Inc. Preliminary Information M675 VOLTAGE CONTROLLED SAW OSCILLATOR ORDERING INFORMATION Part Numbering Scheme Part Number: Device Number MM667850-01y- xx Variant -01 = Output Frequencies 125 - 175 MHz -02 = Output Frequencies 500 - 700 MHz Output Frequency Order Code See Tables 10 and 11 at right for frequency order codes. Consult ICS for other frequencies and order codes. M675-01 Standard Output Frequencies & Order Codes 153.6000 BO 167.2820 BF 155.5200 BA 167.3280 BG 156.2500 BB 167.3316 BH 156.8324 BC 167.7097 BI 161.1328 BD 168.0400 BJ 164.3555 BM 172.6423 BK Figure 6: Part Numbering Scheme Example Order Numbers For Output Order Part # For Output Order Part # Frequencies M675-01-Bx Frequencies M675-02-Ax 155.5200 156.2500 161.1328 M675-01-BA M675-01-BB M675-01-BD 622.0800 625.0000 644.5313 M675-02-AA M675-02-AB M675-02-AD 167.3316 M675-01-BH 669.3266 M675-02-AH Table 9: Example Order Numbers 166.6286 BE 173.3708 BL Table 10: M675-01 Standard Output Frequencies & Order Codes M675-02 Standard Output Frequencies & Order Codes 614.4000 AO 669.1281 AF 622.0800 AA 669.3120 AG 625.0000 AB 669.3266 AH 627.3296 AC 670.8386 AI 644.5313 AD 672.1600 AJ 657.4219 AM 690.5692 AK 666.5143 AE 693.4830 AL Table 11: M675-02 Standard Output Frequencies & Order Codes Consult ICS for the availability of other frequencies While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. M675 Datasheet Rev 0.4 6 of 6 Revised 16Nov2004 Integrated Circuit Systems, Inc. ● Networking & Communications ● www.icst.com ● tel (508) 852-5400 6 Page
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