M660-02 ICST | Alldatasheet

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M660-02 Datasheet Rev 3.0 Revised 10Apr2003 Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400 M660-02 DUAL SAW, SELECTABLE FREQUENCY VCSO Integrated Circuit Systems, Inc. Preliminary Information GENERAL DESCRIPTION The M660-02 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 M660-02 is available in a range of center frequencies from 500 to 700MHz. Minimum pull-range is ±50 ppm (wider pull-range is available). The M660-02 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 0.19ps rms typical (50kHz-80MHz) ◆ Low phase noise -70dBc/Hz @ 1kHz offset ◆ Differential 3.3V LVPECL output ◆ Single 3.3V power supply ◆ Small 9 x 14mm SMT (surface mount) package PIN ASSIGNMENT (9 x 14mm 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 M660 (Top View) VCC FOUT nFOUT GND F_SEL VIN 123 456 M660-02 F_SEL VIN FOUT nFOUT SAW Delay Line Phase Shifter SAW Delay Line Phase Shifter M660 VCSO VCSO M660-02 M660-02 Dual SAW, Selectable Frequency VCSO

M660-02 Datasheet Rev 3.0 2 of 4 Revised 10Apr2003 Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400 Integrated Circuit Systems, Inc. M660-02 DUAL SAW, SELECTABLE FREQUENCY VCSO Preliminary Information PIN DESCRIPTIONS Number Name I/O Configuration Description 1V I N Input Tuning control voltage.

2 F_SEL Input Internal pull-down resistor 1

Frequency select: Logic 1 selects Frequency 2. Logic 0 selects Frequency 1. 3G N D Ground Power supply ground connections. FOUT nFOUT Output No internal terminator Clock output pair. Differential LVPECL. 6V C C Power Power supply connection, connect to + 3.3V. Table 2: Pin Descriptions Note 1: See “Frequency Select” in Table 5, DC Characteristics on pg. 3. ABSOLUTE MAXIMUM RATINGS1 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. Symbol Parameter Rating Unit VI Inputs -0.5 to VCC +0.5 V VO Outputs -0.5 to VCC +0.5 V VCC Power Supply Voltage 3.63 V TS Storage Temperature -55 to +125 oC Table 3: Absolute Maximum Ratings RECOMMENDED CONDITIONS OF OPERATION Symbol Parameter Min Typ Max Unit VCC Positive Supply Voltage 2.97 3.3 3.63 V TA Ambient Operating Temperature -40 25 +85 oC Table 4: Recommended Conditions of Operation

M660-02 Datasheet Rev 3.0 3 of 4 Revised 10Apr2003 Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400 M660-02 DUAL SAW, SELECTABLE FREQUENCY VCSO Preliminary Information Integrated Circuit Systems, Inc. ELECTRICAL SPECIFICATIONS DC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground Symbol Parameter Pin Min Typ Max Unit Power Supply VCC Positive Supply Voltage VCC 2.97 3.3 3.63 V ICC Power Supply Current 90 125 mA Control Voltage VIN Input Control Voltage Range VIN

0 Vcc V

VIN Input Impedence 100 kΩ VIN Modulation Bandwidth 1000 kHz Frequency Select1 Note 1: Internally pulled down to Logic 0 (Frequency 1) if left unselected. VIH Input High Voltage F_SEL 2 Vcc + 0.3 V VIL Input Low Voltage -0.3 0.8 V IIH Input High Current 5 µA IIL Input Low Current -150 µA Rpulldown Internal Pull-down Resistor 51 kΩ Differential Outputs VOH Output High Voltage FOUT, nFOUT Vcc - 0.98 Vcc - 0.75 V VOL Output Low Voltage Vcc - 1.95 Vcc - 1.63 V VP-P Peak to Peak Output Voltage 0.475 0.625 0.85 VP-P IOUT Output Current 20 mA Table 5: DC Characteristics AC Characteristics Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground Symbol Parameter Min Typ Max Unit Notes Frequency FOUT Output Center Frequency Range 500 700 MHz fSTAB Frequency Stability 110 ppm p-p LIN Tuning Linearity 6 % KVCO VCO Gain @622.08MHz 230 ppm/V VIN = 0.3 to 3.0V Best fit straight line Outputs Non-harmonic Spurious -50 -77 dBc Φ n SSB (single sideband) Phase Noise, offset from carrier 100Hz Offset -41 dBc/Hz 1kHz Offset -68 dBc/Hz 10kHz Offset -97 dBc/Hz 100kHz Offset -122 dBc/Hz J(t) Jitter (rms) 12kHz to 20MHz 0.37 ps rms 50kHz to 80MHz 0.19 ps rms odc Output Duty Cycle 2 45 55 % tR Output Rise Time 2 for FOUT, nFOUT 275 400 ps 20% to 80% tF Output Fall Time 2 for FOUT, nFOUT 275 400 ps 20% to 80% Table 6: AC CharacteristicsNote 1: Consult ICS for availability of other APRs. Note 2: See Parameter Measurement Information on pg. 4.