FX-101 FrequencyTranslator
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web:www.vectron.com
Output Frequencies 1.544 77.76 MHz
Supply Voltage, C= 5 Vdc Vcc 4.75 5.00 5.25 Vdc
D= 3.3 Vdc Vcc 3.15 3.30 3.45 Vdc
Supply Current Icc 45 70 mA
Input Signal, “0” A= HCMOS CLKIN 0 0.2 (VCC) Vdc
Input Signal, “1” A= HCMOS CLKIN 0.7 (VCC) 5.5 Vdc
OUTPUT, F= Comp PECL -- -- PECL -- --
VOH VOH Vcc-1.025 Vcc-0.880 Vdc
VOL VOL Vcc-1.810 Vcc-1.620 Vdc
Rise / Fall Time (77.76 MHz) tR/tF0.5 2 ns
OUTPUT, A= HCMOS -- -- HCMOS -- --
VOH, IOL = 50 uA VOH VCC-0.3 Vdc
VOL, IOL = 50 uA VOL 0.1 Vdc
Rise / Fall Time (77.76 MHz/20% to 80%) tR/tF1.4 2.5 ns
Output Symmetry, Sym 45 55 %
Freq >62.208MHz and 3.3V Sym 40 60 %
Jitter @ 77.76 MHz (rms 12 kHz to 20 MHz) 0.5 1 ps
Jitter @ 77.76 MHz (cycle to cycle method) 3 5 ps
Jitter Transfer, GR-253-CORE sec 5.6.2.1.2 0.1 dB
Input Frequency Tracking Capability
(Can translate Stratum 1,2,3,3E,4 or SONET Min) APR ±50 ppm
Operating Temperature Temp Range C= 0°C to +70°C
Temp Range F= -40°C to +85°C
Size 25.4 x 20.32 x 5.08 (1.0” x 0.8” x 0.20”)
Performance Characteristics
Parameter Symbol Min Typical Max Unit
Description
Vectron's FX-101 is a crystal based frequency tr a n s l a t o r
which is used to translate any input frequency such as 8
kHz, 1.544 MHz, 2.048 MHz, 19.440 MHz etc.to any spe-
cific frequency less than or equal to 77.76 MHz. The input
frequency does not have to be a 50/50% duty cycle and
as an example can be an 8 kHz signal with a logic high
"on time" of only 1us, such as a BITS cloc k . The FX-101
also has the ability to translate any of 1 to 4 different input
frequencies to one common output frequency, such as
input frequencies of 8 kHz and 1.544 MHz and 19.44 MHz
and any other frequency between 8 kHz and 170 MHz
t ranslating them to an output frequency up to 77.76 MHz.
The "Input Frequency tra cking capability" is the total
amount of input frequency deviation in which the FX-101
is guaranteed to tra ck or tra n s l a t e. As an ex a m p l e, a typ-
ical input clock would be 8 kHz ±20 ppm.The FX-101 is
g u a ranteed to tra ck at least ±50 ppm of error over tem-
p e ra t u r e / a g i n g / p ower supply and is more than twice what
most applications require. The PLL control voltage is
brought out through a 470K ohm resistor.This would allow
for the use of ex t e rnal circuitry (analog comparators or an
A/D conve rter plus a processor) to detect when the con-
trol voltage is getting close to the limits of the pull ra n g e.