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| Product Data Sheet VS-500A Voltage Controlled Saw Oscillator Features * Output Frequencies from 155 MHz to 800 MHz * Low Jitter < 1 ps rms in the 12kHz to 20MHz range * < 1ps rms jitter in 50kHz to 80MHz range * 3.3V (see VS-500) or 5.0V operation * Ideal for clock smoothing, frequency translation, clock and data retiming applications * 10K ECL, PECL logic levels with fast transition times * Complementary outputs * Low profile, surface mount package * Output disable feature Applications * 2.5, 10 Gbit/s FEC and standard SONET/SDH Clock Smoothing and Frequency Translation * 10 Gigabit Ethernet Clock Smoothing * Frequency Translation Description The VS-500A is a SAW based voltage controlled oscillator that operates at the fundamental frequency of the internal SAW filter. This resonator is a high-Q quartz device that enables the circuit to achieve low phase jitter performance over a wide operating temperature range. The oscillator is housed in a hermetically sealed J-lead surface mount package offered on tape and reel. It has an output disable to facilitate on-board testing. VS-500A Voltage Controlled SAW Oscillator Pin Information Table 1. Pin Function Pin 1 2 3 4 5 6 Symbol VC OD GND Output COutput VCC Function VCSO Control Voltage Output Disable Case and electrical ground VCSO Output VCSO Complimentary Output Power Supply Voltage (5.0 V 10%) 1. By setting OD low, the outputs are disabled and OUT is held high while Complementary OUT is held low. The threshold for Output Disable is 1.4V above pin 3. Output Disable should not be driven above mid supply and during normal operation, should be left floating (use with an open collector or 3-State gate for interfacing with standard logic). Performance Characteristics Table 2. Electrical Performance @ 25C Parameter Center Frequency, see ordering information Operating Temperature Supply Current (no load) Supply Voltage Absolute Pull Range over -40 to 85C (Vc= 0.5 to 4.5) Positive Gain Transfer @ 155.52MHz (Frequency vs Control voltage) Positive Gain Transfer @ 622.080MHz (Frequency vs Control voltage) Linearity Frequency Stability, -40 to 85 wrt 25C Output Level Low1 Output Level High1 Output Rise Time2 Output Fall Time2 Jitter @ 155.520 MHz, 12 KHz to 20 MHz Jitter @ 622.080 MHz, 12 KHz to 20 MHz Jitter @ 622.080 MHz, 50 KHz to 80 MHz Spurious Suppression Data Symmetry Control Voltage Input Impedance Control Voltage Modulation Bandwidth Output Current Symbol FN TOP ICC VCC APR KV KV Lin FSTAB VOL VOH tR tF Minimum 155 -40 4.5 50 Typical 25 55 5 350 200 3 150 250 250 0.439 0.276 0.293 -60 49/51 10 500 Maximum 800 +85 70 5.5 Units MHz C mA V ppm ppm/V ppm/V % ppm V V ps ps ps, rms ps, rms ps, rms dB % K kHz mA VCC -1.95 VCC -0.98 VCC -1.63 VCC -0.75 400 400 SYM Zc BW Iout -50 45 8 - 55 12 20 1. Output Levels are standard 10K ECL and are fully 100K ECL compatible. 2. Transition times are measured from 20% to 80% of a full 10K ECL level swing. Table 3. Typical Single Side-Band Phase Noise (dBc/Hz) Offset from Carrier VS-500A 622.080 100 Hz -62 1kHz -85 10kHz -109 100kHz -127 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON 2 VS-500A Voltage Controlled SAW Oscillator +5.0V .01uF .1uF (From PLL) Vc OD Gnd 120 1 2 3 6 +5.0V +5.0V 120 Vcc (AC Coupling) 5 COutput Output 4 82 82 +5.0V .01uF .1uF (From PLL) Vc OD Gnd 1 2 3 6 Vcc (AC Coupling) 5 COutput Output 4 330 330 Note 2: To diasble output, connect Output Disable to ground. To enable output, leave pin 2 floating or open. Figure 1 PECL Operation Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON 3 VS-500A Voltage Controlled SAW Oscillator -5.0V -5.0V (From PLL) 0.1uF .01uF Vc OD Gnd 120 1 2 3 6 120 Vcc (AC Coupling) 5 COutput Output 4 80 80 -5.0V (From PLL) 0.1uF .01uF Vc OD Gnd 1 2 3 6 Vcc (AC Coupling) 5 COutput Output 4 330 330 -5.0V -5.0V -5.0V Note1: Conductive lid will be @ -5V for ECL configuration Note 2: To diasble output, connect Output Disable to -5V. To enable output, leave pin 2 floating or open. Figure 2. ECL Operation Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON 4 VS-500A Voltage Controlled SAW Oscillator Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not implied at these or any other conditions in 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. Table 4. Absolute Maximum Ratings Parameter Power Supply Output Current1 Output Current2 Voltage Control Range1 Voltage Control Range2 Storage Temperature Soldering Temp./Time Symbol VCC Iout Iout VC VC TS TLS Ratings 0 to 8 20 50 0 to VCC -0.5 to VCC+0.5 -55 to 125 220/10 Unit V mA mA V V C C/Seconds 1 Limts beyond which performance can not be guaranteed. 2 Limits beyond which device life may be impaired. Qualification Conformance The VS-500A family passes the following Mil-Std qualification. Table 5. Environmental Compliance Parameter Mechanical Shock Mechanical Vibration Solderability Gross and Fine Leak Resistance to Solvents Conditions MIL-STD-883, MIL-STD-883, MIL-STD-883, MIL-STD-883, MIL-STD-883, Method Method Method Method Method 2002 2007 2003 1014 2016 Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON 5 VS-500A Voltage Controlled SAW Oscillator Handling Precautions Although ESD protection circuitry has been designed into the the VS-500A proper precautions should be taken when handling and mounting. VI employs a human body model and a charged-device model (CDM) for ESD susceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit parameters used to define the model. Although no industry wide standard has been adopted for the CDM, a standard HBM of resistance = 1.5Kohms and capacitance = 100pF is widely used and therefore can be used for comparison purposes. Table 6. ESD Ratings Model Human Body Model Charged Device Model Minimum 1500V 1000V TEMPERATURE(C) TIME(s) Figure 5. Suggested IR profile VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling and IR reflow simulation. The conditions a device can withstand are well understood and devices can be subjected to the profile in figure 5. This profile shows a ramp up condition to prevent thermal shock, a preheat period in which the flux is activated, a ramp up to 183C which is the reflow temperature of Sn/Pb eutectic and a gradual cool down. The time above 183C should not exceed 60 seconds and the peak temperature should be no more than 220C for 10 seconds. The VS-500A's are 100% screened for hermiticity so an aqueous wash is not an issue. Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON 6 VS-500A Voltage Controlled SAW Oscillator Figure 6. Outline Diagram Dimensions are in inches and (millimeters) 0.118 (3.00) 0.200 (5.08) 0.050 (1.27) 0.100 (2.54) 0.346 (8.80) Figure 7. Suggested Pad Layout Vectron International * 267 Lowell Road, Hudson, NH 03051 * Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON VS-500A Voltage Controlled SAW Oscillator J F D A E C G B L I H K Figure 8. Tape Reel Drawing Table 7. Tape and Reel Dimensions (mm) Tape Dimensions Product VS-500A A 24 B 11.5 C 1.5 D 4 E 12 Reel Dimensions F 1.78 G 21 H 13 I 100 J 5 K 25 L 330 200 # Per Reel Ordering Information Table 8. Available Frequencies (MHz) 155.520 177.7371 625. 000 669.1281 759.410 Other frequencies available upon request 156.250 311.040 627.3296 669.3265 765.5906 161.1328 622.080 644.5313 690.5692 767.250 166.6286 624.7048 666.5143 719.7344 777.600 For additional information please contact: USA: Vectron International * 267 Lowell Road, Hudson, NH 03051 . . . . Tel: 1-88-VECTRON-1 * Fax: 1-888-FAX-VECTRON EUROPE: ......................................................................... Tel: 49 (0) 3328 4784 17 O Fax: 49 (0) 3328 4784 30 www.vectron.com ASIA: ................................................................. Tel: +86 21 28909740 / 41 / 42 O Fax: +86 21 28909240 / 2890999 I 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. (c) 2001, Vectron International Printed in USA 2/02 8 |
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