2.5V operation LVDS SAW Oscillator EG-2121CA-L ♦ Features • Generates high frequency clock from a high stability SAW (surface acoustic wave) resonator. • 2.5V-LVDS output. • Very low jitter/low phase noise. • Small SMD in 7x5mm, Max1.4mm height, ceramic package. ♦ Applications • Gigabit Ethernet, Fibre channel, Infini Band, PCI-express, Rapid IO, Hyper Transport, Memory clock, CPU clock ♦ Absolute Maximum Ratings Item Symbol Supply Voltage Storage temperature Solder heat resistance VCC Tstg Tsol ♦ Operating range Item TYP. MAX. Condition V -0.5 °C -40 Max. 240°C x Max. 10s x 2 times MIN. +4.0 +100 VCC – GND Stored as bare product Condition Symbol Unit MIN. TYP. MAX. VCC Topr V °C 2.375 0 -5 2.5 2.625 +70 +85 RL Ω Symbol Unit MIN. fosc df/f0 MHz ppm 53.125 -100 -50 Supply voltage Operating temperature Output load ♦ Frequency characteristics Item Unit Output frequency Range Frequency Stability 100 P version R version Differential resistor (VCC=2.375 to 2.625,GND=0.0V,Load=100Ω) MAX. Condition TYP. 700 +100 +50 H version, *1 G version, *1 *1 This includes initial frequency tolerance, temperature, supply voltage variation and loading variation. Please refer to Part Numbering Guide (page3). ♦ Electrical characteristics Item Symbol Unit Start up time Current consumption Tosc IOP ms mA OE High level input voltage OE Low level input voltage OE High level input current OE Low level input current Differential output voltage Change to VOD Offset Voltage Change to VOS Duty at outputs crossing point VIH VIL IIH IIL VOD dVOD VOS dVOS tw/t V V uA uA mV mV V mV % Output Rise time Output Fall time Phase Jitter *2 Offset =12KHz to 20MHz Period Jitter *3 n=50000 samples Accumulated Jitter *3 n=2 to 50000 cycles tTLH tTHL TPJ ps ps UI ps ps ps ps tRJ tp-p tacc MIN. (VCC=2.375 to 2.625,GND=0.0V,Load=100Ω) MAX. Condition TYP. 10 30 35 20 25 t=0 at VCC=2.375V fosc<=500MHz fosc>500MHz 0.7VCC -100 247 350 1.125 1.25 0.3VCC 1 -10 454 50 1.375 150 52 55 60 400 400 48 45 40 0.044x10 0.29 3 25 4 -3 1 4 40 5 OE= VCC OE=GND VOD1 ,VOD2 dVOD=VOD1 - VOD2 VOS1 ,VOS2 dVOS=VOS1 - VOS2 V version: <=175MHz 53.125M to 350MHz >350M 20-80% of VOD 80-20% of VOD 53.125 to 700MHz @156.25MHz σ of Random Jitter Peak to Peak of jitter distribution σ of Total jitter distribution *2 Measured by SSB phase noise test equipment. *3 Measured by Time interval analyzer or oscilloscope. EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com EG2121 LVDS Rev 1.4 35D ♦Test circuit 50Ω Line Impedance IOP Test Point A By-pass capacitor 10µF Power Supply 6 5 4 Vcc OUT OUT OE NC GND 1 2 3 100Ω Test Point Bypass capacitor 0.01 to 0.1 µF OE ♦ Timing chart Vcc tTLH tTHL OUT 80% Outputs crossing VOD Differential Voltage 20% OUT tw VOS Offset Voltage Duty=tw/t x 100 t GND ♦ External Dimensions ( Unit : mm ) #5 #4 #5 #1 #3 #3 #2 (Metallize) #2 #6 2.60 5.0 ±0.2 E EG-2121 150.000L HPA21MA #1 0.70 5.08 1.4 Max #4 1.10 7.0 ±0.2 #6 1.40 • Soldering position 3.90 Pin Name OE N.C. GND OUT OUT VCC 2.40 No. #1 #2 #3 #4 #5 #6 1.60 1.50 0.94 5.08 EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com EG2121 LVDS Rev 1.4 35D ♦ Part Numbering Guide EG-2121CA - 156.2500M - L H P A Stability condition A: Including 10yrs Aging N: Excluding Aging Temperature Range P: 0 to +70C R: - 5 to +85C Frequency Stability H: +/-100ppm G: +/-50ppm Output L: LVDS V: LVDS (Duty +/-2%)*2 Output Frequency : see Standard frequency list *1 Available combination : xHPA, xHPN, xHRA, xHRN, xGPN For xGPA and xGRN stability, please contact Epson. xGRA is not available. *2 V (Duty +/-2%) version is available under 175MHz. ♦ Standard Frequency List 53.1250 *3 62.5000 *3 100.0000 106.2500 125.0000 133.0000 159.3750 161.1328 *4 200.0000 212.5000 312.5000 322.2656 *5 400.0000 425.0000 622.0800 625.0000 644.5313 *6 th Please round off 5 digit and specify 4-digit accuracy under decimal point. 155.5200 250.0000 500.0000 156.2500 311.0400 *3 available only xHPA and xHPN. Nominal frequency: *4=161.1328125MHz, *5=322.265625MHz, *6=644.53125MHz EPSON ELECTRONICS AMERICA, INC. www.eea.epson.com EG2121 LVDS Rev 1.4 35D