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| SCG2000I Synchronous Clock Generators PLL 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com Application The Connor-Winfield SCG2000I provides high precision phase lock loop frequency translation for the telecommunication applications that require a temperature range of -40C to 85C. SCG2000I is well suited for use in line cards, service termination cards and similar functions to provide reliable reference, phase locked, synchronization and low phase gain for TDM, PDH, SONET and SDH network equipment. The SCG2000I provides a jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal. Features * Industrial Temperature Range * 3.3V High Precision PLL * Tri-State Capability * Active Alarms * Guaranteed Free Run (20ppm for 19.44MHz output and 30ppm for 125.0 MHz) * 1 Sec. Acquisition Time Bulletin Page Revision Date Issued By SG048 1 of 16 P02 28 Oct 02 MBATTS General Description The SCG2000I provides high precision phase lock loop frequency translation for the telecommunication applications. The SCG2000I generates a CMOS output from an intrinsically low jitter, voltage controlled crystal oscillator. while providing a jitter attenuated, internal reference that is connected to a Reference Output pin. SCG2000I is well suited for use in line cards, service termination cards and similar functions to provide reliable reference, phase locked, synchronization for TDM, PDH, SONET and SDH network equipment . The SCG2000I provides a low phase gain (<0.2dB), jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal. The SCG2000I include the following features: Free Run, Tristate and alarm outputs for Loss-of-Reference, (LOR), Loss-ofLock, (LOL). During the LOR alarm, the SCG2000I will also enter a Free Run state which will guarantee a 20 ppm accurate output with the 19.44 MHz model and 30 ppm accurate output with the 125.0 MHz model. Additionally the Free Run mode may be entered manually by asserting a high signal to the Free Run Enable pin. The outputs, except the oscillator output, may be put into the tri-state high impedance condition for external testing purposes by asserting a high signal to the Tri-State Enable pin. The SCG2000I is 3.3 Volt components that typically draw less than 100 mA. All models have an acquisition time of approximately 1.0 second and can be used in applications that require temperature rating of -40 to 85 C. All models have a 33 resistor in series with the oscillator output. The SCG2000I maximum package dimensions are .78" x .83" x .35" on a six layer FR4 board with surface mount pins. Parts are assembled using high temperature solder to withstand surface mount reflow process. Functional Block Diagram Figure 1 Tri-State Enable (Pin 10) LOL Alarm Output (Pin 7) ALARM DETECTION Free Run Enable (Pin 5) LOR Alarm Output (Pin 6) Reference Input (Pin 8) DIVIDER DPFD ANALOG FILTER FREE RUN CONTROL VCXO Oscillator Output (Pin 9) Optional Oscillator Output (Pin 1) DIVIDER Input Freq. Select A (Pin 14) Reference Output (Pin 1) (Not available on models with optional oscillator output) Input Freq. Select B (Pin 13) Model Comparison Table Table 1 Model SCG2000 SCG2000I SCG2010 SCG2020 SCG2030 SCG2050 SCG2070 Input Ref Freq 8-64 kHz 8-16 kHz 19.44 MHz 19.44 MHz 8-64 kHz 8-64 kHz 19.44 MHz Max Duty Cycle 40/60 45/55 40/60 40/60 45/55 40/60 40/60 Reference Output (Pin #1) = Input Ref Freq. = Input Ref Freq. 8 kHz 19.44 MHz = Input Ref Freq. 19.44 MHz 51.84 MHz, 77.76 MHz Oscillator Output (Pin #9) 1.544 MHz to 125.0 MHz 19.44 MHZ, 125.0 MHz 19.44 MHz 77.76 MHz 1.544 MHz to 125.0 MHz 77.76 MHz 51.84 MHz, 77.76 MHz Ref Output = Osc Output Tight Duty Cycle Notes Basic Model Industrial Temp. Range *Features which differentiate a model from the base model (SCG2000) are highlighted in boldface color and in the notes column. Data Sheet #: SG048 Page 2 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Pin Description Table 2 Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Connection Reference Output TCK TMS Ground Free Run Enable/TDI Loss of Reference (LOR) Loss of Lock (LOL) Reference Input Oscillator Output Tri-State enable Vcc TDO Input Freq. Select B Input Freq. Select A Description Output frequency is dependent on SCG model JTAG pin that is used only by Connor-Winfield for programming. Do not connect JTAG pin that is used only by Connor-Winfield for programming. Do not connect Ground Free Run enable pin. 1 = Free Run. Input is pulled to GND Alarm indicator. 1 = The reference has been lost. Alarm indicator. 1 = Phase lock has been lost Input reference frequency Output frequency is dependent on SCG model Tri State control for all outputs except Oscillator Output. 1 = Hi-Z, 0 = normal. Input is pulled to GND. 3.3V Supply Voltage. JTAG pin that is used only by Connor-Winfield for programming. Do not connect Control pin B used to select input frequency. Input is pulled to GND. Control pin A used to select input frequency. Input is pulled to GND. Typical Application Figure 2 BITS System Signal Input Select Timing Card #1 A A B MUX Y CW's STM/MSTM module B Line Card 1 S CW's SCG 2000/4000 MUX Y Clock out S RCV Timing Card #N A A B MUX Y CW's STM/MSTM module MUX B Line Card #N S CW's SCG 2000/4000 Clock out Y S RCV System Select Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 3 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice Absolute Maximum Rating Table 3 Symbol Vcc V1 Ts Parameter Power Supply Voltage Input Voltage Storage Temperature Minimum -0.5 -0.5 -65 Nominal Maximum 4 5.5 150 Units Volts Volts deg. C Notes Specifications Table 4 Parameter Voltage Current Temperature Range Input Jitter Tolerance (Input Jitter Frequencies > 10 Hz) Specifications 3.3V 5% 100 mA Typical -40 to 85C 31.25us Typical <15 Hz (8 Hz Typical) Approx 1.0 second 32 ppm Minimum 40/60 % Min/Max @ 50% Level 3 ns @ 20% to 80% output level 30 pF LOR, LOL Status on seperate outputs 20 ppm (19.44 MHz output) 30 ppm (125.0 MHz output) Fr4 SM 0.78" x .83" x 0.35" (maximum) 60 ps Typical 750 ps Typical 26 ns Maximum 28 ns Maximum Notes 1.0 Jitter Bandwidth Acquisition Time Capture/Pull-in Range Output Duty Cycle Output Rise and Fall Time Output Load Alarms Free Run Accuracy Package TDEV MTIE Static Offset Dynamic Offset 2.0 Reference Output/Oscillator Output Offset 8 ns 3.0 4.0 Input And Output Characteristics Table 5 Symbol VIH VIL TIO CO VHO VIO TIR NOTES: 1.0: 2.0: 3.0: 4.0: Parameter High Level Input Voltage Low Level Input Voltage I/O to Output Valid Output Capacitance High Level Output Voltage loH = -4mA Low Level Output Voltage loL = 8mA Input Reference Signal Pulse Width Minimum 2 0 Nominal Maximum 5.5 0.8 10 10 Units V V nS pF Notes 2.4 0.4 30 nS Vcc Min. Vcc Max. Requires external regulation From a 20 ppm offset in reference frequency Offset between Reference Input and Reference Output @ room temp. Offset change between Reference Input and Reference Output over temperature range from room temperature Data Sheet #: SG048 Page 4 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Output Jitter Specifications Table 6 Jitter BW 10 Hz - 20 MHz Frequency (MHz) 19.44 125.0 pS (RMS) 10 Typ. 10 Typ. m UI 0.194 Typ. 1.250 Typ. SONET Jitter BW 12 KHz - 20 MHz pS (RMS) 1 Max., 0.5 Typ. 1 Max., 0.5 Typ. m UI 0.019 Max. 0.125 Max. Output Programming Table 7 Tristate 0 1 0 Free Run 0 X 1 Output Locked to reference selected (default) Hi-Z Tristate condition Free run Alarm Status Table 8 LOL Output LOR Output 0 1 X 0 0 1 Alarm Output No alarm Loss-of-Lock Loss-of-Reference Maximum Package Dimensions Figure 3 Recommended Footprint Dimensions Figure 4 0.800 0.640 (20.32mm) (16.26mm) 0.050 TYP (1.27mm) 0.080 (2.03mm) 0.100 TYP (2.54mm) 0.050 TYP (1.27mm) 0.650 (16.51mm) Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 5 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice Input Reference Selection Table 9 Input Sel A (Pin #14) 0 1 Input Sel B (Pin #13) 0 0 Reference Frequency (Pin #8) 8 kHz (default) 16 kHz (Not available w/ 125.0 MHz output) Reference and Output Availability Table 10 Input Reference (Pin #8) 8 kHz 16 kHz 8 kHz Oscillator Output (Pin #9) 19.44 MHz 125.0 MHz Reference Output (Pin #1) 8 kHz 16 kHz 8 kHz Data Sheet #: SG048 Page 6 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Alarm Timing Diagram Figure 5 LOR Output Start-up Region 4 LOL Output 2 3 Phase Detector 1 1 External Reference Internal Reference 2 LOR Output 2 2 2 2 2 2 2 2 2 2 2 2 2 LOL Output 5 Phase Detector 1 1 3 3 1 1 1 External Reference Internal Reference 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 3 4 5 Start-up Region 19.44 MHz &77.76 MHz Reference Input Units < 1 sec 1 sec > 1 sec LOR is active when LOL is active Minimum pulse width = 2 sec 8 kHz Reference Input Units < 31.25 sec 31.25 sec > 31.25 sec 125 sec wide range Minimum pulse width = 62.5 sec During Start-up, The LOL Alarm will pulse during the first second of operation Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 7 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice SCG2000 Jitter Attenuation Figure 6 Jitter Attenuation vs. Input Frequency 0.0 -5.0 -10.0 -15.0 -20.0 -25.0 -30.0 -35.0 -40.0 -45.0 1 10 100 INPUT Jitter frequency (Hz) 1000 Jitter attenuation (dB) Figure 7 Typical System Test Setup Data Sheet #: SG048 Page 8 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000I Typical TDEV Figure 8 100.0E-12 TDEV (seconds) 10.0E-12 1.0E-3 10.0E-3 100.0E-3 Integration Time ( ) (seconds) 1.0E+0 10.0E+0 SCG2000I Typical MTIE Figure 9 1.0E-9 MTIE (seconds) 100.0E-12 1.0E-3 10.0E-3 100.0E-3 1.0E+0 10.0E+0 100.0E+0 Observation Window (S) (seconds) Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 9 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice SCG2000I Switch from Free Run to a new Reference Figure 10 000.0E+0 -10.0E-6 Phase Deviation (sec) -20.0E-6 -30.0E-6 -40.0E-6 -50.0E-6 -60.0E-6 0 1 2 3 4 Time (sec) 5 6 7 8 SCG2000I Switch from a Reference to Free Run Figure 11 2.0E-6 1.0E-6 000.0E+0 -1.0E-6 Phase Deviation (sec) -2.0E-6 -3.0E-6 -4.0E-6 -5.0E-6 -6.0E-6 -7.0E-6 -8.0E-6 0 1 2 3 4 5 Time (sec) 6 7 8 9 10 11 Data Sheet #: SG048 Page 10 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000I Step Response due to a -20ppm Freq. Step Figure 12 200.0E+0 000.0E+0 -200.0E+0 -400.0E+0 Frequency (Hz) -600.0E+0 -800.0E+0 -1.0E+3 -1.2E+3 -1.4E+3 -1.6E+3 -1.8E+3 4 4.2 4.4 4.6 4.8 5 Time (sec) 5.2 5.4 5.6 5.8 6 SCG2000I 1s Phase Transient Response Figure 13 1.2E-6 1.0E-6 800.0E-9 Time (sec) 600.0E-9 400.0E-9 200.0E-9 000.0E+0 -200.0E-9 4 5 6 Time (sec) 7 8 Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 11 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice Tape and Reel Dimensions Figure 14 Data Sheet #: SG048 Page 12 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Solder Profile Figure 15 250 200 Temp (C) 150 100 50 0 1 2 3 4 5 6 7 8 Time(minutes) Recommended Reflow Profile Peak Temp:217C MaxRiseSlope:1.5 C/Sec Time Above150C:100Sec Ordering Information SCG{XXXX}-{FFF.FFF}{M} XXXX equals a specific model (2000i) FFF.FFF equals the Oscillator Output frequency (001.544, 002.048, 016.384, 019.44, 020.48, 037.056, 044.736, 049.152, 051.84, 077.76, 125.00) M equals MHZ and is added to all part numbers Example: To order an SCG2000I with an Oscillator Output of 19.44 MHz, Order part number SCG2000I-019.44M Please contact Connor-Winfield for other frequencies that may be available. Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 13 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice Data Sheet #: SG048 Page 14 of 16 Rev: P02 Date: 10 / 28 / 02 (c) Copyright 2002 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Revision P00 P01 P02 Revision Date 5/14/02 5/28/02 10/28/02 Note Preliminary Informational Release Corrected Temp Range in General Description Added 125.0 MHz model Data Sheet #: SG048 (c) Copyright 2002 The Connor-Winfield Corp. Page 15 of 16 Rev: P02 Date: 10 / 28 / 02 All Rights Reserved Specifications subject to change without notice 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com |
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