Loop Filter
Disable
Lock Detect
FX-102
Phase Freq
Detector PECL
VCXO
VCXO Monitor
Frequency
Divider
Microprocessor
Frequency
Divider
Input
Frequency
Frequency
Select
Q
Q
Product Data Sheet
FX-102
Frequency Translator
Output frequencies up to 155.52 MHz
Low Jitter PECL Output
Locked to specified Input frequency, e.g. 8 kHz
Single 5.0 Vdc or 3.3 Vdc supply
Lock / Loss of Signal Alarm
1" x 0.8" x 0.2", Surface Mount (FR4 base)
SONET / SDH / ATM / DSL-PON interconnects
8 kHz/16.384 MHz/19.44 MHz to 155.52 MHz
4.75
3.15
Operating Temperature Temp Range C = 0ºC to +70ºC
Temp Range F = -40ºC to +85ºC
Supply Voltage, C = 5 Vdc
D = 3.3 Vdc
Supply Current
Input Signal, A = HCMOS
D = PECL
VOL (Temp Range C = 0ºC to +70ºC)
OUTPUT, F = Comp PECL
Output Symmetry
Rise / Fall Time
Jitter Generation, rms (12 kHz to 20 MHz)
Input Frequency Tracking Capability
(Can translate a Stratum 1,2,3,3E,4
or SONET Min source)
See page 3 for outline Drawings and Dimensions
VOH (Temp Range C = 0ºC to +70ºC)
5.00
3.30
VDD
VDD
5.25
3.45
Vdc
Vdc
IDD 45 70 mA
CLKIN
CLKIN
HCMOS
PECL
---
---
VOH VDD-1.025 VDD-0.880 V
VOL VDD-1.810 VDD-1.620 V
tR/tF1ns
--- --- PECL --- ---
45
Sym 55 %
<0.5 ps
APR +/-40 ppm
Size
Vectron's FX-102 is a crystal based frequency translator which is used to translate any input
frequency such as 8 kHz, 1.544 MHz, 2.048 MHz, 19.440 MHz etc. to any specific frequency from
77.76 to 155.52 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 clock. The
FX-102 also has the ability to translate up to any of 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 333 Hz and 155.52 MHz translating them to any specific output
frequency from 77.76 MHz to 155.52 MHz.
The "Input Frequency tracking capability" is the total amount of input frequency deviation in which
the FX-102 is guaranteed to track or translate. As an example, a typical input clock would be
8 kHz ± 20 ppm. The FX-102 is guaranteed to track at least ±40 ppm of error over temperature/
aging/ power 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 external
circuitry (analog comparators or an A/D converter plus a processor) to detect when the control
voltage is getting close to the limits of the pull range.
0.5
VOL (Temp Range F = -40ºC to +85ºC)
VOH (Temp Range F = -40ºC to +85ºC) VOH VDD-1.085 VDD-0.880 V
VOL VDD-1.830 VDD-1.555 V
Jitter Generation, rms(cycle to cycle method) 3ps
Min Pulse Width @ 8 kHz 1us
1
CLKIN Input Frequency
1
GND Ground
2
LD
(Output)
Lock Detect
Logic "1" indicates a locked condition and requires a couple hundred pF capacitor to ground to
operate correctly.
Logic "0" indicates that no input signal is detected and can be used as a loss-of-signal alarm.
Toggles when not locked.
3
Monitor
(Output)
PLL/ VCXO control voltage
Under locked conditions, should be >0.3V and <3.0 V for the 3.3 volt option or >0.5V and <4.5V
for the 5 volt option. Input frequency may be out of range if voltage exceeds these limits.
4
NC No Connection
5
NC No Connection
6
GND Ground
7
Disable
(Input)
Disables Output
Logic "1" = Output disabled
Logic "0" (or no connect) = Output enabled
8
OUT VCXO Output (PECL)
9
COUT Complementary VCXO Output (PECL)
10
NC No Connection
11
Select A Do not Exceed Vdd (NC for one input frequency)
12
Select B Do not Exceed Vdd (NC for one or two input frequencies)
13
NC No Connection
14
GND Ground
15
VDD Power Supply Voltage (5 Vdc or 3.3 Vdc)
16
6.35
(0.25)
3.81
(0.15)
17.78
(0.70)
20.32
(0.80)
2.54
(0.10)
25.4
(1.00)
1.73
(0.068)
1.73
(0.068)
1.01
(0.040)
mm
(in)
pre-heating
60 to 90 sec.
@ 140ºC to 160ºC
reflow
40 to 60 sec.
@ >183ºC
Temperature ( ºC)
NOTE: This FX-102 should not be subjected to a wash process that will immerse it in solvents.
NO CLEAN is the recommended procedure.
8.89
(0.35)
17.78
(0.70)
19.05
(0.75)
2.54
(0.10)
1.91
(0.075)
3.04
(0.12)
9.53
(0.375)
mm
(in)
A
B
155.52 MHz
f1
f2
f3
f4
f1 = 0 0
f2 = 0 1
f3 = 1 0
f4 = 1 1
Input Select
Freq. A B
AB
VDD
*
*Note: VI highly recommends either a linear regulator or
bypass capacitors; 10 uF, ferrite bead, 0.1 uF and a 100pF
capacitor would be typical.
8 kHz
1.544 MHz
2.048 MHz
19.44 MHz
FAQs
Q: What are the different input frequencies Available?
A: The FX-102 is able to handle any input frequency between 333 Hz and 155.52 MHz.
(A list of standard frequencies is available on page 7.)
Q: How many different input frequencies can a specific FX-102 accept?
A: Each FX-102 can be programmed to accept up to 4 different frequencies.
Q: If there is only one input pin, how can your unit accept 4 different frequencies?
A: The customer is required to supply a multiplexer which would switch between the
different input frequencies. The multiplexers select pins would need to be syncd to
the select pins of the FX-102. (The drawing above illustrates this configuration.)
74LS151
Multiplexer
(MUX)
All components outside the dotted line box are user supplied components and/or connections. This is just one possible
configuration of the FX-102. For additional information about your specific needs please contact our Factory.
(Fout)
(Fin)
(2,7,15)
(12/13)
(1)
(9)
(8)
(4)
(3)
(16)
* *
Loop Filter
Disable
Lock Detect
FX-102
Phase Freq
Detector
PECL
VCXO
VCXO Monitor
Frequency
Divider
Microprocessor
Frequency
Divider
Input
Frequency
Frequency
Select
Q
Q
(10)
Although protection circuitry has been
designed into this device, proper precautions
should be taken to avoid exposure to
electrostatic discharge (ESD) during handling
and mounting. VI employs a human-body
model (HBM) and a charged-device model
(CDM) for ESD-susceptibility testing and
protection design evaluation. ESD voltage
thresholds are dependent on the circuit
parameters used to define the mode.
Although no industry-wide standard has been
adopted for the CDM, a standard HBM
(resistance = 1500 ohms, capacitance =
100pf) is widely used and therefore can be
used for comparison purposes. The HBM
ESD threshold presented here was obtained
by using these circuit parameters.
ESD Threshold Voltage
Model Threshold Unit
Human-Body (HBM)
Charged-Device
500
500
V min
V min
1.024 MHz---
77.76 MHz---
666.5143 MHz---
155.52 MHz---
FX-101
FX-102
FX-104
Output
Frequency
622.08 MHz---
1.00 GHz---
Future
FX-101 FX-102
FX-104
HCMOS
or
Comp.
PECL
Output
Comp.
PECL
Output
Comp.
PECL
Output
www.vectron.com
77.76 MHz 2
333 Hz A
13.00 MHz M
2 kHz B
16.384 MHz N
8 kHz C
19.44 MHz P 16 kHz D
20.48 MHz R
64 kHz E
26.00 MHz T
1.024 MHz F
27.00 MHz W
1.544 MHz H
38.88 MHz X
Special SCD S
2.048 MHz J
44.736 MHz Y
4.096 MHz K
51.84 MHz 0
8.192 MHz L
61.44 MHz 1
FX-102 - X F X - X X X X
Input Logic
A = HCMOS
D = PECL
Supply Voltage
C = +5 Vdc +/-5%
D = +3.3 Vdc +/-5%
Number of Input Frequencies
1 = 1 input Frequency
2 = 2 input Frequencies
3 = 3 input Frequencies
4 = 4 input Frequencies
Output Frequency
See Frequency Chart Above
Output Type
F = Comp. PECL
Temperature Range
C = 0 to +70 C
F = -40 to +85 C
139.264 MHz 5
82.944 MHz 3
112 MHz 4
155.52 MHz 6
Input Frequency
See Frequency Chart Above
If not listed or more than one frequency
enter S in this block and then list all the
input frequencies after the part number.
