Data Sheet

VFFT400
Quad Output
Frequency Translator
Features
¾
¾
¾
¾
RoHS Status
400 MHz Output Frequency Range
4 Selectable Output Frequencies
Low Power: <220mW typical
Low Profile SMD package
Applications
¾
¾
¾
Optical Networking, Sonet / SDH / ATM
10 Gigabit Ethernet
Forward Error Correction (FEC)
Description
The VFFT400 is a Frequency Translator which accepts an input frequency from 8KHz to 200MHz and provides
an output frequency from 50MHz to 400MHz. Up to four Input and Output combinations are possible. Each I/O
is preset and determined by the frequency select inputs [S1:S0]. 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 VFFT400 is offered in a 19.5mm x17mm surface mount package. Consult
factory for frequency selections.
LD
Filter
R-Divider
F in
VCO
PFD
Fout
/Fout
/EN
N- Divider
P1
P2
S1 S0
.1uF
Block Diagram
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevC0608
1
VFFT400
Quad Output
Frequency Translator
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 Frequencies (F0) – F0(3)
Output Frequency Range
Output Configuration
Jitter (RMS)
Input frequency Fin( 0) – Fin (3)
Input configuration
Input Level
Input Level
Modulation Bandwidth
Start up Time
I/O Select Inputs
Lock Detect Output (LD)
Specification
3.3 Volts +/- 5%
80mA (max)
50 to 400 MHz
35 MHz (max)
Differential LVPECL
0.450ps
8 KHz to 200 MHz
Single-ended, AC coupled
150 mVp-p(min) / 900mV (max)
400 mVp-p (min) / 3 .3V (max)
1 K Hz
300 ms (max)
S1: S0
Logic “1” : In lock
Logic “0” : Out of lock
1% ( min)
-40 ºC to +85 ºC
Notes
FOUT min to FOUT max
Unterminated
50 KHz to 80 MHz
Fin > 200 MHz
Consult Factory for options
LVCMOS See Note 1
LVCMOS
Lock / Capture Range
Operating Temperature Range
Notes
1. The input frequency must be within 500ppm of final value before asserting the “Select Inputs.”
Example
Table 1
Suffix
Input Frequency
156.25 MHz
155.52 MHz
156.25 MHz
161.1328 MHz
-001
Output Frequency
155.52 MHz
156.25 MHz
161.1328 MHz
156.25 MHz
Select inputs [S1 : S0]
0 0
0 1
1 0
1 1
Ordering Information:
Once Input and Output frequencies have been submitted and approved, the Factory will assign a part number.
VFFT400 -
suffix
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevC0608
2
VFFT400
Quad Output
Frequency Translator
Pin Assignments
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
Fin
Gnd
S1
LD
S0
DNC
DNC
Vcc
Gnd
/OE
/Fout
Fout
P1
P2
Description
Input Frequency
Ground
I/O Select (msb)
Lock Detect
I/O Select (lsb)
Do not connect to this pad
Do not connect to this pad
3.3 Volt Power Supply
Ground
Output Disable
Complimentary Output
Output
Connect to P2 externally
Connect to P1 externally
Notes
Add .1 uF Capacitor
Mechanical Outline
Vcc = 3.3V
C1
.1 uF
LD
Vcc = 3.3V
Disable
C1
.1 uF
Fin
S1
S0
8
14
13
1
4 10
12
3
5
11
2
9
Gnd
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevC0608
3
R1
180 Ω
Fout
nFout
R2
180 Ω
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