VFFT200 Frequency Translator With Holdover to 200MHz RoHS Status Features ¾ Low Jitter and Phase noise ¾ Automatic Holdover Switching ¾ 10ppm Holdover Stability ¾ Low Profile SMD package Applications ¾ Optical Networking, Sonet / SDH / ATM ¾ 10 Gigabit Ethernet ¾ Broadband Access Description The VFFT200 is a Frequency Translator which accepts a predetermined input frequency from 8KHz to 200 MHz and provides an output frequency from 50 MHz to200 MHz. The output will be frequency locked to the input frequency during normal operation. In the event the input frequency fails, the output frequency will remain within 20 ppm of the nominal frequency. A Lock Detect output signal indicates an “out of lock” condition. The device is implemented with a Phase Locked Loop where all Loop Filter components are integrated into the module. The VFFT200 is offered in a 20.5mm x 19.5mm x 3.81 mm surface mount package. LD Filter VCXO PFD R-Divider F in Fout NFout Disable N- Divider P1 P2 .1 uF Block Diagram 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevA0607 1 VFFT200 Frequency Translator With Holdover to 200MHz Absolute Maximum Ratings Parameter Power Supply Voltage Storage Temperature Min -.50 -45 Max +4.0 +90 Units Volts ºC Operating Specification Parameter Supply Voltage Supply Current Output Frequency Output Level Logic “1” Output Level Logic “0” Jitter (rms) Input frequency Fin Input Frequency Tracking Input configuration Input Level Specification 3.3 Volts +/- 5% 80 mA (max) 50 to 200 MHz Vcc - .9V (typ) Vcc – 1.75 V (typ) 1 ps(max) .008 to 200 MHz 5 ppm (min) / 10 ppm (max) Notes LVPECL 12 KHz to 20 MHz Single-ended, AC coupled 400Vp-p(min) / 3.3Vp-p (max) Modulation Bandwidth Start up Time Initial Lock Time Lock Detect Output (LD) 4 Hz (Typ) 100 mS (max) 2 sec (max) Logic “1” : In lock Logic “0” : Out of lock 10 ppm (typ) 20 (max) -40 ºC to +85 ºC To Holdover accuracy To a valid Fin LVCMOS Frequency Stability Operating Temperature Range Notes 1. The input frequency must be within 500 ppm of final value before asserting the “Select Inputs.” Pin Assignments Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Symbol Gnd N/C N/C Fin DNC LD DNC Vcc Gnd n Fout Fout OD P1 P2 Description Ground No Connection No Connection Input Frequency Do not connect Lock Detect Do not connect 3.3 Volt Power Supply Ground Complementary Output Frequency Output Frequency Output Disable Must be connected to P2 Must be connected to P1 Notes Drive : 1 LVCMOS Load Add .1 uF Capacitor Add .1 uF Capacitor 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevA0607 2 VFFT200 Frequency Translator With Holdover to 200MHz Mechanical Outline 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevA0607 3