VS-500A Saw Oscillator Datasheet

VS-500A Datasheet, PDF, Equivalent


Part Number

VS-500A

Description

Voltage Controlled Saw Oscillator

Manufacture

Vectron International

Total Page 8 Pages
Datasheet
Download VS-500A Datasheet


VS-500A
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Product Data Sheet
VS-500A
Voltage Controlled Saw Oscillator
Features
• Output Frequencies from 155 MHz to 800 MHz
• Low Jitter < 1 ps rms in the 12kHz to 20MHz range
• < 1ps rms jitter in 50kHz to 80MHz range
3.3V (see VS-500) or 5.0V operation
• Ideal for clock smoothing, frequency translation, clock
and data retiming applications
• 10K ECL, PECL logic levels with fast transition times
• Complementary outputs
• Low profile, surface mount package
• Output disable feature
Applications
• 2.5, 10 Gbit/s FEC and standard SONET/SDH Clock
Smoothing and Frequency Translation
• 10 Gigabit Ethernet Clock Smoothing
• Frequency Translation
Description
The VS-500A is a SAW based voltage controlled
oscillator that operates at the fundamental frequency of
the internal SAW filter. This resonator is a high-Q quartz
device that enables the circuit to achieve low phase
jitter performance over a wide operating temperature
range. The oscillator is housed in a hermetically sealed
J-lead surface mount package offered on tape and reel.
It has an output disable to facilitate on-board testing.

VS-500A
VS-500A Voltage Controlled SAW Oscillator
Pin Information
Table 1. Pin Function
Pin Symbol
1 VC
2 OD
3 GND
4 Output
5 COutput
6 VCC
Function
VCSO Control Voltage
Output Disable
Case and electrical ground
VCSO Output
VCSO Complimentary Output
Power Supply Voltage (5.0 V ±10%)
1. By setting OD low, the outputs are disabled and OUT is held high while Complementary OUT is held low. The threshold for Output Disable is 1.4V
above pin 3. Output Disable should not be driven above mid supply and during normal operation, should be left floating (use with an open collector or
3-State gate for interfacing with standard logic).
Performance Characteristics
Table 2. Electrical Performance @ 25°C
Parameter
Symbol
Center Frequency, see ordering information
FN
Operating Temperature
TOP
Supply Current (no load)
Supply Voltage
Absolute Pull Range over -40 to 85°C
(Vc= 0.5 to 4.5)
ICC
VCC
APR
Positive Gain Transfer @ 155.52MHz
(Frequency vs Control voltage)
KV
Positive Gain Transfer @ 622.080MHz
(Frequency vs Control voltage)
KV
Linearity
Lin
Frequency Stability, -40 to 85 wrt 25°C
FSTAB
Output Level Low1
VOL
Output Level High1
VOH
Output Rise Time2
Output Fall Time2
Jitter @ 155.520 MHz, 12 KHz to 20 MHz
Jitter @ 622.080 MHz, 12 KHz to 20 MHz
Jitter @ 622.080 MHz, 50 KHz to 80 MHz
Spurious Suppression
Data Symmetry
Control Voltage Input Impedance
Control Voltage Modulation Bandwidth
Output Current
tR
tF
SYM
Zc
BW
Iout
Minimum
155
-40
4.5
±50
-
-
VCC -1.95
VCC -0.98
-50
45
8
-
-
Typical
25
55
5
-
350
200
±3
±150
-
-
250
250
0.439
0.276
0.293
-60
49/51
10
500
-
1. Output Levels are standard 10K ECL and are fully 100K ECL compatible.
2. Transition times are measured from 20% to 80% of a full 10K ECL level swing.
Table 3. Typical Single Side-Band Phase Noise (dBc/Hz)
Offset from Carrier
VS-500A 622.080
100 Hz
-62
1kHz
-85
10kHz
-109
Maximum
800
+85
70
5.5
-
-
-
VCC -1.63
VCC -0.75
400
400
55
12
-
20
Units
MHz
°C
mA
V
ppm
ppm/V
ppm/V
%
ppm
V
V
ps
ps
ps, rms
ps, rms
ps, rms
dB
%
K
kHz
mA
100kHz
-127
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Fax: 1-888-FAX-VECTRON
2


Features Product Data Sheet VS-500A Voltage Cont rolled Saw Oscillator Features • Out put Frequencies from 155 MHz to 800 MHz • Low Jitter < 1 ps rms in the 12kHz to 20MHz range • < 1ps rms jitter in 50kHz to 80MHz range • 3.3V (see VS- 500) or 5.0V operation • Ideal for cl ock smoothing, frequency translation, c lock and data retiming applications • 10K ECL, PECL logic levels with fast t ransition times • Complementary outpu ts • Low profile, surface mount packa ge • Output disable feature www.DataS heet4U.com Applications • 2.5, 10 Gb it/s FEC and standard SONET/SDH Clock S moothing and Frequency Translation • 10 Gigabit Ethernet Clock Smoothing • Frequency Translation Description The VS-500A is a SAW based voltage control led oscillator that operates at the fun damental frequency of the internal SAW filter. This resonator is a high-Q quar tz device that enables the circuit to a chieve low phase jitter performance ove r a wide operating temperature range. The oscillator is housed in a hermetically sealed.
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