SCG102A Synchronous Clock Generators PLL 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com Applications • SONET / SDH / ATM • DWDM / FDM • DSL-PON Interconnects • FEC (Forward Error Correction) Features • 3.3V High Precision PLL • Accepts 1 of 4 Selectable, Pre-determined Input Frequencies • 77.76 MHz to 170 MHz Output Frequencies Available. • Jitter Generation OC-192 Compliant • 1.0” x 0.80” x 0.285”, Surface Mount Bulletin Page Revision Date Issued By SG076 1 of 8 00 11 APR 07 ENG General Description The SCG102A provides high precision phase lock loop frequency translation for the telecommunication applications. The SCG102A product generates LVPECL outputs from an intrinsically low jitter, voltage controlled crystal oscillator. SCG102A 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 SCG102A provides a jitter filtered, wander following output signal sychronized to a superior Stratum or peer input reference signal. The SCG102A includes a lock detect alarm output. The PLL control voltage is brought out through a 470 kΩ restistor and can be used to determine when the pull range limits are reached.The LVPECL outputs may be put into the tri-state high impedance condition for external testing purposes by asserting a high signal to the Enable/Disable pin. The SCG102A is a 3.3 Volt component that will typically draw 75mA. The SCG102A is designed to be used in applications that require temperature rating of -40°C - 85° C. The SCG102A package typical dimensions are 1.0” x 0.80” x 0.285” (See fig. 2 for maximum dimensions). Parts are assembled using high temperature solder to withstand surface mount reflow process. The SCG102A locks to any one of four pred-determined input frequencies selected using the SELECT (A&B) lines (See Table 4). The output may be any single frequency from 77.76 MHz to 170 MHZ. Functional Block Diagram Figure 1 LD 470 kΩ (Pin 3) Monitor (Pin 4) CLKIN Frequency Loop PECL OUT Divider Filter VCXO COut (Pin 1) (Pin 9) (Pin 10) Frequency 10 kΩ Divider Select A (Pin 12) Microprocessor Select B (Pin 13) Enable/Disable 10 kΩ (Pin 8) Absolute Maximum Rating Table 1 Symbol Parameter Minimum Vcc Power Supply Voltage VI Input Voltage Ts Storage Temperature Nominal Maximum Units -0.3 5.5 Volts -0.3 Vcc Volts -55 125 °C Data Sheet #: SG076 Page 2 of 8 Notes Rev: 00 Date: 4/11/07 © Copyright 2007 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Specifications Table 2 Symbol Parameter Minimum fIN Available Input Frequencies CMOS PECL fOUT Vcc Nominal Maximum Units 8k 1M 100 M 100 M Hz Hz Output Frequencies(LVPECL) 77.76 M 170 M Hz Supply Voltage 3.135 3.3 3.465 Volts 100 mA ICC Supply Current 75 CLKIN Input Logic CMOS PECL CLKOUT Output Logic F = Comp. PECL A = CMOS D = PECL 1 PECL VOH 2.275 V VOL TR/TF Rise/Fall Time SYM Output Symmetry BW Bandwidth 20 JGEN Jitter Generation RMS (12 kHz - 20 MHz) 0.5 JTRAN Jitter Transfer APR Input Frequency Tracking TOP Operating Temperature NOTES: Notes 0.5 45 1.68 V 1 ns 55 % Hz 1 ps 0.1 dB ±50 F= C= -40 0 2 ppm 85 70 °C °C 1.0: Only HCMOS and LVHCMOS is supported for input frequencies < 1MHz 2.0: GR-253-CORE, Sec. 5.6.2.1.2 Pin Description Table 3 Pin # Connection Description 1 CLKIN Input Frequency - The SCG102A AC couples the input , this means that the unit is capable of handling HCMOS, LVCMOS, PECL, LVPECL input signals. 2 GND Ground 3 Lock Detector Logic “1” indicates that the unit is locked to the input reference Logic “0” indicates that the reference is lost or out of lock range 4 VCXO Monitor Control voltage level for the PECL oscillator (Between 0.3V and 3.0V when locked) 5 ---- Missing 6 NC No connection 7 GND Ground 8 Enable/Disable Logic “0” (or no connect) = Output Enabled Logic “1” = Output Disabled (Tri-Stated) 9 Out Output 10 COut Complementary Output 11 NC No connection 12 Select A Input Frequency Select Control Pin. See Table 4. 13 Select B Input Frequency Select Control Pin. See Table 4. 14 NC No connection 15 GND Ground 16 VCC Power supply voltage (3.3 Vdc ± 5%) Data Sheet #: SG076 Page 3 of 8 Rev: 00 Date: 4/11/07 © Copyright 2007 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Input Frequency Selection Table 4 Input Freq SEL A SEL B f1 0 0 f2 0 1 f3 1 0 f4 1 1 Output Load and Power Supply Filtering Recommendations Figure 2 * * * It is highly recommended * that either a linear regulator or bypass capacitors be used. Typical values would be 10 uF, 0.1 uF, 100 pF. VT -2 VDC LD (Pin 3) 470 kΩ Monitor (Pin 4) CLKIN Frequency Loop PECL OUT Divider Filter VCXO COut (Pin 1) 50Ω 50Ω (Pin 9) (FOUT) (Pin 10) Frequency 10 kΩ Divider Select A (Pin 12) Microprocessor Select B (Pin 13) 10 kΩ Enable/Disable (Pin 8) Data Sheet #: SG076 Page 4 of 8 Rev: 00 Date: 4/11/07 © Copyright 2007 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Ordering Information Table 5 10 MHz 10 kHz 8 kHz 16 kHz 64 kHz 1.024 MHz 1.048 MHz 1.544 MHz 2.048 MHz 4.096 MHz A B C D E F G H J K 8.192 MHz 13.00 MHz 16.384 MHz 19.44 MHz 20.48 MHz 26.00 MHz 27.00 MHz 38.88 MHz 44.736 MHz 53.10468 MHz L M N P R T W X Y Z 51.84 MHz 61.44 MHz 77.76 MHz 82.944 MHz 112.00 MHz 139.264 MHz 155.52 MHz 166.6286 MHz 114.0 MHz 125.0 MHz 0 1 2 3 4 5 6 7 8 9 For any model, the reference inputs and output frequency must have a common frequency of 2.667Hz (8kHz/3) Ex 1: A Model with reference inputs of 8kHz, 16kHz, 32kHz and 64kHz with a Output frequency of 155.52MHz is valid due to the common frequency of 2.667kHz. Contact CW regarding models that do not have a input/output common frequency of 2.667kHz. SCG102A- D F F - A 1 P 6 Output Frequency (2 to 9) See chart above. If a custom frequency is desired, enter S followed by the frequency. Contact a sales representative for the availabilty of custom frequencies. Input Frequency (A to 9) See chart above. If more than one frequency is desired, enter S and list all desired frequencies. Contact a sales representative for the availabilty of custom frequencies. Supply Voltage D = 3.3 VDC ± 5% Output Type F = Comp. PECL Temperature Range C = 0°C to 70°C F = -40°C to 85°C Number of Input Frequencies 1 = 1 Input Frequency 2 = 2 Input Frequencies 3 = 3 Input Frequencies 4 = 4 Input Frequencies Sample Part Number Examples: SCG-102A- DFF-A1C2 SCG-102A- DFF-A4S2, S = 8 kHz, 16.384 MHz, 19.44 MHz, 38.88 MHz SCG-102A-DFF-D1ZS, S = Custom Frequency Data Sheet #: SG076 Input Logic A = CMOS D = PECL Page 5 of 8 Rev: 00 Date: 4/11/07 © Copyright 2007 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Package Dimensions Recommended Footprint Dimensions Figure 3 Figure 4 .100 [2.54mm] 1.000 [25.40mm] PIN 1 .740 [18.80mm] .285 [7.24mm] MAX. .800 [20.32mm] Solder Profile Figure 5 300 Peak Temp. 245°-255°C for 15 sec Typ. 250 221°C Temp (°C) 200 Reflow Zone 30/90 sec (Min/Max) 150 Soaking Zone 60-90 sec Typ. (2 min Max) 100 50 Ramp Slope not to exceed ±3°C/sec 0 0 50 100 150 200 250 300 350 Time (sec) Data Sheet #: SG076 Page 6 of 8 Rev: 00 Date: 4/11/07 © Copyright 2007 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Data Sheet #: SG076 Page 7 of 8 Rev: 00 Date: 4/11/07 © Copyright 2007 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 4/11/07 Final Release