Data Sheet

VFFT401
Quad Output
Frequency Translator
Features
¾
¾
¾
¾
RoHS Status
1.5 GHz 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 VFFT401 is a Frequency Translator which accepts an input frequency from 100 to 800MHz and provides
an output frequency from 400 to 1.5GHz. 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 VFFT401 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
VFFT401
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)
Lock / Capture Range
Operating Temperature Range
Example
Input Frequency
669.32658 MHz
669.32658 MHz
693.48315 MHz
704.38 MHz
Specification
3.3 Volts +/- 5%
80mA (max)
400 to 1500 MHz
100MHz (max)
Differential LVPECL
0.250ps (typ)
100 to 800 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
See Table 2
FOUT Min to FOUT Max
Unterminated
50 KHz to 80 MHz
See Table 2
Fin > 200 MHz
Consult Factory for options
LVCMOS See Note 1
LVCMOS
Table 1
Output Frequency
622.080 MHz
669.32658 MHz
644.5314 MHz
657.4213 MHz
I / O Ratio
85 / 79
1/1
85 / 79
90 / 84
Select inputs [S1 : S0]
0 0
0 1
1 0
1 1
Notes
1. The input frequency must be within 500ppm of final value before asserting the “Select Inputs.”
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevC0608
2
VFFT401
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
VFFT401
Quad Output
Frequency Translator
Ordering Information:
Once Input and Output frequencies have been submitted and approved, the Factory will assign a part number.
VFFT401 -
suffix
Sample Frequencies
P/N
suffix
-001
-003
S1:S0
00
01
10
11
Input
Frequency (MHz)
622.080
669.32658
644.5314
657.4213
00
01
10
11
155.5200
167.33164
161.13285
164.355325
Table 2
Output
Frequency (MHz)
669.32658
669.32658
693.48315
704.38
P/N
suffix
-002
669.32658
669.32658
693.48315
704.38
-004
S1:S0
00
01
10
11
Input
Frequency (MHz)
669.32658
669.32658
693.48315
704.38
00
01
10
11
167.331645
167.331645
173.370787
176.09500
Output
Frequency (MHz)
622.080
669.32658
644.5314
657.4213
622.080
669.32658
644.5314
657.4213
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-435-5289 • www.valpeyfisher.com • RevC0608
4
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