SCG2000 Series Synchronous Clock Generators PLL 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com Bulletin Page Revision Date Issued By SG035 1 of 20 00 23 AUG 04 MBATTS Application Features The Connor-Winfield SCG2000 Series provides high precision phase lock loop frequency translation for the telecommunication applications. SCG2000 Series 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 SCG2000 Series provides a jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal. * 3.3V High Precision PLL * Tri-State Capability * Active Alarms * Guaranteed Free Run 20ppm * 1 Sec. Acquisition Time General Description also enter a Free Run state which will guarantee a 20 ppm accurate output. 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 SCG2000 Series are 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 0 70 C. All models have a 33 resistor in series with the oscillator output. The SCG2000 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. The SCG2000 Series provides high precision phase lock loop frequency translation for the telecommunication applications. The SCG2000 products generate a CMOS output from an intrinsically low jitter, voltage controlled crystal oscillator. Most models provide a jitter attenuated, internal reference that is connected to a Reference Output pin. SCG2000 Series 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 SCG2000 Series provides a low phase gain (<0.2dB), jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal. The SCG2000 Series include the following features: Free Run, Tri-state and alarm outputs for Loss-of-Reference, (LOR), Loss-of-Lock, (LOL). During the LOR alarm, the SCG2000 will Functional Block Diagram Figure 1 Tri-State Enable (Pin 10) LOL Alarm Output (Pin 7) ALARM DETECTION LOR Alarm Output (Pin 6) Free Run Enable (Pin 5) Reference Input (Pin 8) DIVIDER DPFD ANALOG FILTER FREE RUN CONTROL VCXO Oscillator Output (Pin 9) Optional Oscillator Output (Pin 1) DIVIDER Reference Output (Pin 1) (Not available on models with optional oscillator output) Input Freq. Select A (Pin 14) Input Freq. Select B (Pin 13) Model Comparison Table Table 1 Input Ref Freq Max Duty Cycle Reference Output (Pin #1) Oscillator Output (Pin #9) Notes SCG2000 8-64 kHz 40/60 = Input Ref Freq. 1.544 MHz to 125.0 MHz Basic Model SCG2010 19.44 MHz 40/60 8 kHz 19.44 MHz SCG2020 19.44 MHz 40/60 19.44 MHz 77.76 MHz SCG2030 8-64 kHz 45/55 = Input Ref Freq. 1.544 MHz to 125.0 MHz SCG2050 8-64 kHz 40/60 19.44 MHz 77.76 MHz SCG2070 19.44 MHz 40/60 51.84 MHz, 77.76 MHz 51.84 MHz, 77.76 MHz Model Tight Duty Cycle Ref Output = Osc Output *Features which differentiate a model from the base model (SCG2000) are highlighted in boldface color and in the notes column. Data Sheet #: SG035 Page 2 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Pin Description Table 2 Pin # All SCG2000 Models Connection Description 1 Reference Output Output frequency is dependent on SCG model 2 TCK JTAG pin that is used only by Connor-Winfield for programming. Do not connect 3 TMS JTAG pin that is used only by Connor-Winfield for programming. Do not connect 4 Ground Ground 5 Free Run Enable/TDI Free Run enable pin. 1 = Free Run at nominal frequency 20ppm. Input is pulled to GND 6 Loss of Reference (LOR) Alarm indicator. 1 = The reference has been lost. 7 Loss of Lock (LOL) Alarm indicator. 1 = Phase lock has been lost 8 Reference Input Input reference frequency 9 Oscillator Output Output frequency is dependent on SCG model 10 Tri-State enable Tri State control for all outputs except Oscillator Output. 1 = Hi-Z, 0 = normal. Input is pulled to GND. 11 Vcc 3.3V Supply Voltage. 12 TDO JTAG pin that is used only by Connor-Winfield for programming. Do not connect 13 Input Freq. Select B Control pin B used to select input frequency. Input is pulled to GND. 14 Input Freq. Select A Control pin A used to select input frequency. Input is pulled to GND. Typical Application Figure 2 BITS System Signal Input Select Line Card 1 Timing Card #1 S A B CW's SCG 2000/4000 MUX A Y MUX B CW's STM/MSTM module Y S Clock out RCV Line Card #N Timing Card #N S A A B MUX Y MUX CW's STM/MSTM module B Y CW's SCG 2000/4000 Clock out RCV S System Select Data Sheet #: SG035 Page 3 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Absolute Maximum Rating Table 3 All SCG2000 Models Symbol Parameter Minimum Nominal Maximum Units Vcc Power Supply Voltage -0.5 4 Volts V1 Input Voltage -0.5 5.5 Volts Ts Storage Temperature -65 150 deg. C Notes Specifications Table 4 All SCG2000 Models Parameter Specifications Notes Voltage 3.3V 5% 1.0 Current 100 mA Typical Temperature Range 0 to 70C Input Jitter Tolerance (Input Jitter Frequencies > 10 Hz) 31.25us Typical (SCG2000, SCG2030, SCG2050) >1 us Typical (SCG2010, SCG2015, SCG2020, SCG2070) Jitter Bandwidth <15 Hz Acquisition Time Approx 1.0 second Capture/Pull-in Range 25 ppm Minimum Output Duty Cycle 40/60 % Min/Max @ 50% Level Output Rise and Fall Time 3 ns @ 20% to 80% output level Output Load 30 pF Alarms LOR, LOL Status on seperate outputs 2.0 Free Run Accuracy 20 ppm Package Fr4 SM 0.78" x .83" x 0.35" (maximum) TDEV 60 ps Typical MTIE 750 ps Typical Reference Output/Oscillator Output Offset 8 ns Static Offset 26 ns Maximum 3.0, 5.0 Dynamic Offset 20 ns Maximum 4.0, 5.0 Input And Output Characteristics Table 5 All SCG2000 Models Symbol Parameter Minimum VIH High Level Input Voltage 2 VIL Low Level Input Voltage 0 0.8 V TIO I/O to Output Valid 10 nS CO Output Capacitance 10 pF VHO High Level Output Voltage loH = -4mA VIO Low Level Output Voltage loL = 8mA TIR Input Reference Signal Pulse Width NOTES: 1.0: 2.0: 3.0: 4.0: 5.0: Nominal Maximum Units 5.5 V 2.4 Notes Vcc Min. 0.4 30 Vcc Max. nS 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. The SCG2015 will maintain an offset/skew, between the reference input and the oscillator output, of X 1ns. X is TBD. Data Sheet #: SG035 Page 4 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Output Jitter Specifications Table 6 All SCG2000 Models Jitter BW 10 Hz - 20 MHz SONET Jitter BW 12 KHz - 20 MHz Frequency (MHz) pS (RMS) m UI pS (RMS) m UI 1.544 30 Typ. 0.046 Typ. 4 Typ. 0.006 2.048 30 Typ. 0.061 Typ. 4 Typ. 0.008 8.448 10 Typ. 0.084 Typ. 1 Max., 0.5 Typ. 0.008 Max. 16.384 10 Typ. 0.164 Typ. 1 Max., 0.5 Typ. 0.016 Max. 19.44 10 Typ. 0.194 Typ. 1 Max., 0.5 Typ. 0.019 Max. 20.48 10 Typ. 0.205 Typ. 1 Max., 0.5 Typ. 0.020 Max. 37.056 10 Typ. 0.371 Typ. 1 Max., 0.5 Typ. 0.037 Max. 44.736 10 Typ. 0.457 Typ. 1 Max., 0.5 Typ. 0.045 Max. 49.152 10 Typ. 0.492 Typ. 1 Max., 0.5 Typ. 0.049 Max. 51.84 10 Typ. 0.518 Typ. 1 Max., 0.5 Typ. 0.052 Max. 77.76 10 Typ. 0.778 Typ. 1 Max., 0.5 Typ. 0.078 Max. 125.0 10 Typ. 1.25 Typ. 1 Max., 0.5 Typ. 0.125 Max. * Note: These jitter specs only apply to version 2 models Output Programming Table 7 Alarm Status All SCG2000 Models Table 8 All SCG2000 Models Tristate Free Run Output LOL Output LOR Output Alarm Output 0 0 Locked to reference selected (default) 0 0 No alarm 1 X Hi-Z Tristate condition 1 0 Loss-of-Lock 0 1 Free run at nominal frequency X 1 Loss-of-Reference Maximum Package Dimensions Recommended Footprint Dimensions Figure 3 Figure 4 0.800" [20.32mm] 0.640" [16.26mm] 0.050" [1.27mm] 0.080" [2.03mm] 0.050" [1.27mm] 0.650" [16.51mm] 0.100" [2.54mm] Data Sheet #: SG035 Page 5 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Tape and Reel Dimensions Figure 5 Data Sheet #: SG035 Page 6 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000 Typical TDEV Figure 6 TDEV (seconds) 100.0E-12 10.0E-12 1.0E-3 10.0E-3 100.0E-3 1.0E+0 10.0E+0 Integration Time () (seconds) SCG2000 Typical MTIE Figure 7 MTIE (seconds) 1.0E-9 100.0E-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 #: SG035 Page 7 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000 Switch from Free Run to a new Reference Figure 8 000.0E+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 5 6 7 8 Time (sec) SCG2000 Switch from a Reference to Free Run Figure 9 2.0E-6 1.0E-6 000.0E+0 Phase Deviation (sec) -1.0E-6 -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 6 7 8 9 10 11 Time (sec) Data Sheet #: SG035 Page 8 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000 Step Response due to a -20ppm Freq. Step Figure 10 200.0E+0 000.0E+0 -200.0E+0 Frequency (Hz) -400.0E+0 -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 5.2 5.4 5.6 5.8 6 Time (sec) SCG2000 1s Phase Transient Response Figure 11 1.2E-6 1.0E-6 Time (sec) 800.0E-9 600.0E-9 400.0E-9 200.0E-9 000.0E+0 -200.0E-9 4 5 6 7 8 Time (sec) Data Sheet #: SG035 Page 9 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000 Jitter Attenuation Figure 12 Jitter attenuation (dB) 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 Typical System Test Setup Figure 13 GPS or LORAN Timing Source This device supplies system time information. It can be thought of as supplying "absolute time" reference information Possible Choice : Stanford Research Model: FS700 S am p l e M T E I D a ta fo r ST M - S 3/ M ST M - S 3 1 .0 E-6 T y p ci a lr e s p o n s e - 3 0 0 0 s ce o n d t e s -t J ti te r a p p l e i d ( 2 UI@ 1 0 H z) r e fd a t e APR 2 9 198 kdh 1 0 0 .0 E-9 MT E I s ( 10 MHz MT E I 1 0 .0 E-9 1 2 4 4 -5 . 2 M a s k ( A) 1 2 4 4 -5 . 2 M a s k ( B) 1 2 4 4 -5 . 6 M a s k GR2 5 3 - 5 .4 . 4 .3 . 2 1 .0 E-9 1 0 0 .0 E-3 1 . 0E +0 1 0 .0 E+ 0 100 . 0+ E0 Obs er vati on Tim e ( s) 1. 0 E+ 3 Co p y ri g h t 1 9 9 8 Co n n o r- Wi n f e i d l a l lr g i h ts 10 . 0+ E3 e r s e rv e d Target System Under Test External Reference Input DS-1 Line Card OC-48 Line Card OC-3 Line Card OC-12 Line Card Line Card . . . . ... MTIE, TDEV, Wander Transfer, and Wander Generation Plots S amp le Wan de r G e ne rat i on ( T D EV ) f o r S TM M / ST M- S3 1 .0 E -6 Tp y i ca l re s p o n se -3 0 0 0 s e c o n d te s t J- i t re a p p e il d ( 2 UI @ 0 1 Hz) re f d ta e APR 2 2 1 9 9 8 kd h 1 0 0 .0 E -9 1 0 .0 E -9 TD E V ( sec Arbitrary Waveform Generator [Noise Source] Standards Compliance Documents Clock or BITSl ogic l evel clock input (TTL, CMOS, etc.) Noise Modulation Input 10 MHz DS1 rate RZ (1.544 MHz), E1 rate RZ or 8 kHz clock RZ with noise modulation Timing Card Arbitrary Waveform Generator Timing Card External Reference Input TDEV GR1244- Fig 5. 1 1 .0 E -9 GR1244- Fig 5- 3 1 0 0 .0 E -1 2 0. E 1 0- 3 1 0 0 .0 E - 3 1. 0 E+ 0 In e t gr a t io n Ti m e ( se c) 1 0 .0 E + 0 100 . 0 E0 + 1 .0 E + 3 Co p y rg i h t 1 9 8 C o n o r -W n i fi e l dal r g i h ts r e se r v e d Time-stamped ensemble based on absolute time reference (10MHz input) 10 MHz DS1 rate [1.544 MHz] BITS Bipolar Phase Error data output DS-1, OC-3, OC-12 electrical or optical signals 10 MHz Tektronix SJ300E External Reference Input HP53310A Modulation Analyzer / Time Interval Analyzer Wander Analyzer data (IEEE-488) External Reference Input IEEE-488 Controller Platform for software HP 53305A Phase Analyzer HP E1748A Sync Measurement Tektronix Wander Analyzer Data Sheet #: SG035 Page 10 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Alarm Timing Diagram Figure 14 LOR Output Start-up Region 4 LOL Output 2 1 Phase Detector 1 3 External Reference Internal Reference 2 2 2 2 2 2 2 2 2 2 2 2 2 2 LOR Output LOL Output Phase Detector 5 1 1 1 3 1 1 3 External Reference Internal Reference 2 2 2 1 2 3 4 5 Start-up Region 2 2 2 2 19.44 MHz &77.76 MHz Reference Input Units < 1 sec 2 2 2 2 2 < 31.25 sec 31.25 sec > 1 sec > 31.25 sec Minimum pulse width = 2 sec 2 8 kHz Reference Input Units 1 sec LOR is active when LOL is active 2 125 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 #: SG035 Page 11 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Solder Profile Figure 15 250 200 Temp (Deg C) 150 100 50 0 1 2 3 4 5 6 7 8 Time (minutes) Recommended Reflow Profile Peak Temp: 217 Deg C Max Rise Slope: 1.5 Deg C/Sec Time Above 150 C: 100 Sec Ordering Information SCG{XXXX}-{FFF.FFF}{M} XXXX equals a specific model (2000, 2010, 2020, 2030, 2050, 2070) FFF.FFF equals the Oscillator Output frequency (001.544, 002.048, 008.448, 016.384, 019.44, 020.48, 037.056, 044.736, 049.152, 051.84, 077.76, 125.0) M equals MHZ and is added to all part numbers Example: To order an SCG2000 with an Oscillator Output of 77.76 MHz, Order part number SCG2000-077.76M Please contact Connor-Winfield for other frequencies that may be available. Data Sheet #: SG035 Page 12 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2000 The SCG2000 is Connor-Winfield's base model for the SCG2000 Series product line. The SCG2000 can lock to one of four input reference frequencies from 8 to 64 kHz which is selectable using two input control pins. SCG2000 Individual Features: * Four selectable References: 8, 16, 32, and 64 kHz. * Oscillator Output Available: 1.544 MHz to 125.0 MHz. Input Reference Selection Table 9 SCG2000 Input Sel A (Pin #14) Input Sel B (Pin #13) Reference Frequency (Pin #8) 0 0 8 kHz (default) 1 0 16 kHz 0 1 32 kHz (see note 4.0) 1 1 64 kHz (see note 4.0) Reference and Output Availability Table 10 SCG2000 Input Reference (Pin #8) Oscillator Output (Pin #9) Reference Output (Pin #1) 8 kHz 16 kHz 19.44 MHz 8 kHz 16 kHz 8 kHz 16 kHz 32 kHz 38.88 MHz 8 kHz 16 kHz 32 kHz 8 kHz 16 kHz 32 kHz 64 kHz 1.544, 2.048, 16.384 20.48, 37.056, 44.736, 49.152, 51.84 and 77.76 MHz 8 kHz 16 kHz 32 kHz 64 kHz 125.0 MHz 8 kHz 8 kHz Notes: Note 4.0: Not available with 19.44 MHz output. Data Sheet #: SG035 Page 13 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2010 The SCG2010 is designed as a clean-up PLL with the input reference frequency (Pin #8) equal to the oscillator output (Pin #9). The reference output frequency (Pin #1) is 8 kHz. The LOL alarm is designed to tolerate 1s p-p of jitter on the reference. Jitter greater than 1s p-p will result in LOL alarm pulses. SCG2010 Individual Features: * Input References (Pin #8) at 19.44 MHz. * Oscillator Output (Pin #9) at 19.44 MHz. * Reference Output (Pin #1) at 8 kHz. Input Reference Selection Table 11 Input Sel A (Pin #14) X SCG2010 Input Sel B (Pin #13) X Reference Frequency (Pin #8) 19.44 MHz (Default) X= Don't Care Reference and Output Availability Table 12 Input Reference (Pin #8) 19.44 MHz SCG2010 Oscillator Output (Pin #9) 19.44 MHz Data Sheet #: SG035 Reference Output (Pin #1) 8 kHz Page 14 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2020 The SCG2020 accepts a 19.44 MHz Input Reference (Pin #8) and provides a 19.44 MHz Output Reference (Pin #1) and a 77.76 MHz signal output on Output #2. The LOL alarm is designed to tolerate 1s p-p of jitter on the reference. Jitter greater than 1s p-p will result in LOL alarm pulses. SCG2020 Individual Features: * Input References (Pin #8) at 19.44 MHz. * Oscillator Output (Pin #9) at 77.76 MHz. * Reference Output (Pin #1) at 19.44 MHz. Input Reference Selection Table 15 Input Sel A (Pin #14) X SCG2020 Input Sel B (Pin #13) X Reference Frequency (Pin #8) 19.44 MHz (Default) X= Don't Care Reference and Output Availability Table 16 Input Reference (Pin #8) 19.44 MHz SCG2020 Oscillator Output (Pin #9) Reference Output (Pin #1) 77.76 MHz 19.44 MHz Data Sheet #: SG035 Page 15 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2030 The SCG2030 is similar to the SCG2000 but with a tighter duty cycle of 45/55. SCG2030 Individual Features: * Four selectable References: 8, 16, 32, and 64 kHz. * Oscillator Output Available: 1.544 MHz to 125.0 MHz. * Tight Duty cycle Input Reference Selection Table 17 SCG2030 Input Sel A (Pin #14) Input Sel B (Pin #13) Reference Frequency (Pin #8) 0 0 8 kHz (default) 1 0 16 kHz 0 1 32 kHz (see note 4.0) 1 1 64 kHz (see note 4.0) Reference and Output Availability Table 18 SCG2030 Input Reference (Pin #8) 8 kHz 16 kHz 8 16 32 64 kHz kHz kHz kHz 8 kHz Oscillator Output (Pin #9) Reference Output (Pin #1) 19.44 MHz 8 kHz 16 kHz 1.544, 2.048, 8.448, 16.384,17.408 MHz 1.544, 2.048, 8.448, 20.48, 37.056 MHz 8.448, 16.384, 44.736, 49.152 MHz 8.448, 51.84 and 77.76 MHz 8 kHz 16 kHz 32 kHz 64 kHz 125.0 MHz 8 kHz Notes: Note 4.0: Not available with 19.44 MHz output. Data Sheet #: SG035 Page 16 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2050 The SCG2050 can use any 1 of 4 selectable Input Reference frequencies with an Oscillator output of 77.76 MHz and a Reference Output of 19.44 MHz SCG2050 Individual Features: * Four selectable References: 8, 16, 32, and 64 kHz. * Oscillator Output Available: 77.76 MHz only Input Reference Selection Table 19 Input Sel A (Pin #14) SCG2050 Input Sel B (Pin #13) Reference Frequency (Pin #8) 0 0 8 kHz (default) 1 0 16 kHz 0 1 32 kHz 1 1 64 kHz Reference and Output Availability Table 20 Input Reference (Pin #8) SCG2050 Oscillator Output (Pin #9) Reference Output (Pin #1) 8 kHz 77.76 MHz 19.44 MHz 16 kHz 77.76 MHz 19.44 MHz 32 kHz 77.76 MHz 19.44 MHz 64 kHz 77.76 MHz 19.44 MHz Data Sheet #: SG035 Page 17 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice SCG2070 The SCG2070 is designed to provide two output frequencies that are equal. The Reference Output is actually a second Oscillator Output. SCG2070 is available with either 77.76 MHz outputs or with 51.84 MHz outputs. The LOL alarm is designed to tolerate 1s p-p of jitter on the reference. Jitter greater than 1s p-p will result in LOL alarm pulses. SCG2070 Individual Features: * Input References (Pin #8) at 19.44 MHz. * Oscillator Output (Pin #9) equals Reference Output (Pin #1) Input Reference Selection Table 21 Input Sel A (Pin #14) X SCG2070 Input Sel B (Pin #13) X Reference Frequency (Pin #8) 19.44 MHz (Default) X= Don't Care Reference and Output Availability Table 22 Input Reference (Pin #8) SCG2070 Oscillator Output (Pin #9) Reference Output (Pin #1) 19.44 MHz 77.76 MHz 77.76 MHz 19.44 MHz 51.84 MHz 51.84 MHz Data Sheet #: SG035 Page 18 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Data Sheet #: SG035 Page 19 of 20 Rev: 00 Date: 08/23/04 (c) Copyright 2004 The Connor-Winfield Corp. 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 Revision Revision Date Note 00 8/23/04 Final Release