VC-708 LVPECL, LVDS Crystal Oscillator Data Sheet Ultra Low Phase Noise VC-708 Description Vectron’s VC-708 Crystal Oscillator is a quartz stabilized, low phase noise, differential output oscillator which is hermetically sealed in a 5x7 ceramic package. Features • • • • • • Applications 47 fs RMS jitter typical, 12kHz-20MHz Ultra Low Jitter Performance, 3rd OT Crystal Design Differential Output Low Current Consumption -10/70°C or -40/85°C Operation Hermetically Sealed 5x7 Ceramic Package • Product is compliant to RoHS directive and fully compatible with lead free assembly • • • • • • • • • Ethernet, GbE, SynchE Fiber Channel PON Driving A/D’s, D/A’s, FPGA’s Test and Measurement Medical Storage Area Networking Telecom COTS Phase Noise Plot Block Diagram Complementary Output Output VDD Crystal Oscillator NC NC Gnd Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page1 Performance Specifications Table 1. Electrical Performance, LVPECL Parameter Symbol Min Typical Maximum Units 3.3 2.5 3.465 2.625 V V 50 65 mA Supply Voltage1 VDD Current (No Load) IDD 3.135 2.375 Frequency Nominal Frequency fN 2 Stability (Ordering Option) See Table 8. MHz ±25, ±50, ±100 ppm Outputs Output Logic Levels, -10/70°C Output Logic High Output Logic Low VOH VOL VDD-1.025 VDD-1.810 VDD-0.880 VDD-1.620 V V Output Logic Levels, -40/85°C Output Logic High Output Logic Low VOH VOL VDD-1.085 VDD-1.830 VDD-0.880 VDD-1.555 V V 1.0 1.0 ns ns 50 55 % 47 75 20 90 45 100 150 40 180 90 fs fs fs fs fs Output Rise and Fall Time3 Rise Time Fall Time tR tF 50 ohms into VDD-1.3V Load Duty Cycle 4 45 5 Jitter, 156M250 12 kHz - 20 MHz 12 kHz - 40 MHz 10 kHz -1 MHz 1 kHz -1 MHz 1.875 MHz-20 MHz фJ Period Jitter6 RMS P/P Deterministic Jitter7 фJ 1.3 12 0 Start-Up Time tSU Operating Temperature (Ordering Option) TOP ps ps ps 10 -10/70 or -40/85 Package Size 5.0 x 7.0 x 1.8 1. The VC-708 power supply pin should be filtered, e.g., a 10, 0.1, 0.01 and 0.001uf capacitors. 2. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow. 3. Figure 1 defines these parameters. 4. Duty Cycle is defined as the On Time/Period, see Figure 1. 5. Measured using an Agilent E5052. 6. Measured using a LeCroy Wavemaster 8600A, 90K samples, no filtering applied. 7. Measured using a Wavecrest SIA3300C, 90K samples. tR tF VDD*0.8 Crossing Point VDD*0.2 On Time Period Figure 1. Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page2 ms °C mm Performance Specifications Table 2. Electrical Performance, LVDS Parameter Symbol Min Typical Maximum Units 3.3 2.5 3.465 2.625 V V 37 48 mA Supply 1 Voltage (Ordering Option) VDD Current (No Load) IDD 3.135 2.375 Frequency Nominal Frequency fN Stability2 (Ordering Option) See Table 9. MHz ±25, ±50, ±100 ppm Outputs Differential Output Amplitude 247 454 mV Differential Output Error -50 50 mV Offset Voltage 1.125 Offset Voltage Error Output Rise and Fall Time3 Rise Time Fall Time 1.375 V 50 mV 1.0 1.0 ns ns 50 55 % 65 90 35 90 63 130 180 70 180 120 fs fs fs fs fs tR tF Load Duty Cycle 1.250 -50 100 ohms differential 3,4 45 Jitter 156.250MHz5 12 kHz - 20 MHz 12 kHz - 40 MHz 10 kHz -1 MHz 1 kHz - 1 MHz 1.875 MHz-20 MHz фJ Period Jitter6 RMS P/P Deterministic Jitter7 фJ Start-Up Time tSU Operating Temperature (Ordering Option) TOP Package Size 1.3 12 0 ps ps ps 10 ms -10/70 or -40/85 °C 5.0 x 7.0 x 1.8 mm 1. The VC-708 power supply pin should be filtered, eg, a 10, 0.1, 0.01, 0.001uf capacitors. 2. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow. 3. Figure 1 defines these parameters. 4. Duty Cycle is defined as the On Time/Period, see Figure1. 5. Measured using an Agilent E5052. 6. Measured using a LeCroy Wavemaster 8600A, 90K samples, no filtering applied. 7. Measured using a Wavecrest SIA3300C, 90K samples. Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page3 Package and Pinout Table 3. Pinout Pin # Symbol Function 1 NC No Internal Connection is made 2 NC No Internal Connection is made 3 GND Electrical and Lid Ground 4 fO Output Frequency 5 CfO Complementary Output Frequency 6 VDD Supply Voltage 6 7.0±0.15 5 4 VC-708 Frequency Date Code 1 2 5.0±0.15 3 1.8 max 1.96 1.40 1 1.78 3.66 6 2 Bottom View 5 2.54 1.20 3 3.57 4 2.54 5.08 5.08 Units are mm Figure 3. Package Outline Drawing Figure 2. Pad Layout LVPECL Application Diagrams VDD 0.01uF 1 6 2 5 3 4 NC 0.01uF NC 0.01uF 140 ȍ 140 ȍ Figure 4. Single Resistor Termination Scheme Resistor values are typically 140 ohms for 3.3V operation and 84 ohms for 2.5V operation. Figure 5. Pull-Up Pull Down Termination Resistor values shown are typical for 3.3 V opertaion. For 2.5V operation, the resistor to ground is 62 ohms and the resistor to supply is 250 ohms The VC-708 incorporates a standard PECL output scheme, which are unterminated FET drains. There are numerous application notes on terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 4, and a pull-up/pull-down scheme as shown in Figure 5. AC coupling capacitor are optional, depending on the application and the input logic requirements of the next stage. One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left unterminated, and if it one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching into account. Load matching and power supply noise are the main contributors to jitter related problems. Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page4 LVDS Application Diagrams LVDS Driver 100ȍ LVDS Receiver LVDS Driver Figure 6. LVDS to LVDS Connection, Internal 100ohm Resistor Some LVDS structures have an internal 100 ohm resistor on the input and do not need additional components. AC blocking capacitors can be used if the DC levels are incompatible. 100ȍ Receiver Figure 7. LVDS to LVDS Connection Some input structures may not have an internal 100 ohm resistor on the input and will need an external 100ohm resistor for impedance matching. Also, the input may have an internal DC bias which may not be compatible with LVDS levels, AC blocking capacitors can be used. One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-terminated, and if it one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching into account. Load matching and power supply noise are the main contributors to jitter related problems. Environmental and IR Compliance Table 4. Environmental Compliance Parameter Condition Mechanical Shock MIL-STD-883 Method 2002 Mechanical Vibration MIL-STD-883 Method 2007 Temperature Cycle MIL-STD-883 Method 1010 Solderability MIL-STD-883 Method 2003 Fine and Gross Leak MIL-STD-883 Method 1014 Resistance to Solvents MIL-STD-883 Method 2015 Moisture Sensitivity Level MSL1 Contact Pads Gold over Nickel Gold thickness is 0.3-1.0um S IR Compliance Suggested IR Profile Devices are built using lead free epoxy and can be subjected to standard lead free IR reflow conditions shown in Table 5. Contact pads are gold over nickel and lower maximum temperatures can also be used, such as 220C. Table 5. Reflow Profile Parameter Symbol Value PreHeat Time ts 200 sec Max Ramp Up RUP 3°C/sec Max Time above 217°C tL 150 sec Max Time to Peak Temperature tAMB-P 480 sec Max Time at 260°C tP 30 sec Max Time at 240°C tP2 60 sec Max Ramp down RDN 6°C/sec Max Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page5 S Maximum Ratings, Tape & Reel Absolute Maximum Ratings and Handling Precautions Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied or any other excess of conditions represented in the operational sections of this data sheet. Exposure to absolute maximum ratings for extended periods may adversely affect device reliability. Although ESD protection circuitry has been designed into the VC-708, proper precautions should be taken when handling and mounting, VI employs a Human Body Model and Charged Device Model for ESD susceptibility testing and design evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry standard has been adopted for the CDM a standard resistance of 1.5kOhms and capacitance of 100pF is widely used and therefor can be used for comparison purposes. Table 6. Maximum Ratings Parameter Symbol Storage Temperature TSTORE Rating Unit -50/125 °C Supply Voltage -0.5 to 7.0 V ESD, Human Body Model 1500 V ESD, Charged Device Model 1000 V Table 7. Tape and Reel Information Tape Dimensions (mm) Reel Dimensions (mm) W F Do Po P1 A B C D N W1 W2 #/Reel 16 7.5 1.5 4 8 180 2 13 21 55 17 21 250 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page6 Ordering Information Table 8. Standard Output Frequencies (MHz) LVPECL 32.000 80.000 120.000 125.000 155.520 156.250 160.000 161.132800 161.132812 167.970 174.220 200.000 160M0000 161M1328 156.253906 156.257812 Table 9. Standard Output Frequencies (MHz) LVDS 106M250 125M000 153M600 156M250 200M000 VC-708- E C E - K N X N - 156M250000 Product XO Package 5x7 Voltage Options E: +3.3 Vdc, ±5% H: +2.5 Vdc, ±5% Frequency in MHz Other (Future Use) N: Standard Enable/Disable Pin X: No Enable/Disable Output C: LVPECL D: LVDS Other (Future Use) N: Standard Temp Range W: -10/70°C E: -40/85°C Stability F: ±25ppm K: ±50ppm S: ±100ppm *Note: not all combination of options are available. Other specifications may be available upon request. Example: VC-708-ECE-KNXN-156M250000 For Additional Information, Please Contact USA: Europe: Asia: Vectron International 267 Lowell Road Hudson, NH 03051 Tel: 1.888.328.7661 Fax: 1.888.329.8328 Vectron International Landstrasse, D-74924 Neckarbischofsheim, Germany Tel: +49 (0) 3328.4784.17 Fax: +49 (0) 3328.4784.30 VI Shanghai 1589 Century Avenue, the 19th Floor Chamtime International Financial Center Shanghai, China Tel: 86.21.6081.2888 Fax: 86.21.6163.3598 Disclaimer Vectron International reserves the right to make changes to the product(s) and or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Rev: 11/02/2011 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com Page7