34 Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com
Performance Characteristics
Frequency
Center Frequency fo622.08 800 MHz 1,2,3
Absolute Pull Range APR ±50 ppm 1,2,3
Linearity Lin ±3 % 2,4
Gain Transfer KV+430 ppm/V 2
Temperature Stability FSTAB ±100 ppm 2,6
Supply
Voltage VCC 2.97 3.3 3.63 V 2,3
Current (No Load) ICC 55 70 mA 2,3
Outputs
Mid Level VCC-1.5 VCC-1.3 VCC-1.1 V 2,3
Swing 500 650 800 mV-pp 2,3
Current IOUT 20 mA 2,3
Rise Time tR250 400 ps 2,3,5
Fall Time tF250 400 ps 2,3,5
Symmetry SYM 45 55 % 2,3
Harmonic Spurious Suppression 50 60 dBc 6
Jitter ØJ 0.350 ps-rms 6,7
Control Voltage
Input Impedance Zc100 kΩ6
Modulation Bandwidth BW 500 kHz 6
Operating Temperature TOP -40 85 °C 1,3
Package Size 14 x 9x 3.5 mm
1. See Standard Frequencies and Ordering Information.
2. Parameters are tested with production test circuit (See data sheet on web).
3. Parameters are tested at ambient temperature with test limits guardbanded for specified operating temperature.
4. Measured as the maximum deviation from the best straight-line fit, per MIL-0-55310.
5. Measured from 20% to 80% of a full output swing.
6. Not tested in production, guaranteed by design, verified at qualification.
7. Integrated across 50 kHz to 80 MHz, per OC-192.
Parameter Symbol Minimum Typical Maximum Units Notes
Description
The VS-550 is a dual output (selectable output) SAW based
voltage controlled oscillator that operates at the fundamen-
tal frequencies of the internal SAW filters. These SAW
filters are high-Q quartz devices that enable the circuit to
achieve low phase jitter performance over a wide operating
temperature range. The dual oscillator is housed in a her-
metically sealed J-lead surface mount package offered on
tape and reel. It has a frequency select to function that
enables either “Frequency 1” or “Frequency 2”.
Features
• Frequency Select Feature (dual frequency capability)
• Industry Standard Package, 14 x 9 x 3.5 mm
• Output Frequencies from 622.080 MHz to 800 MHz
• 3.3 V Operation
• Low Jitter < 1 ps rms (50 kHz to 80 MHz offset range)
• LVPECL Logic Levels with Fast Transition Times
• Complementary Outputs
Voltage Controlled Saw Oscillators (VCSO’s)
VS-550
PRELIMINARY - AVAILABLE Q3
8798_AA's Vectron 05/30/02 3:11 PM Page 34
Voltage Controlled Saw Oscillators (VCSO’s)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • Web: www.vectron.com 35
Ordering Information
VS
Temperature Range
F= -40oC to +85oC
Frequency
(see above)
Frequency 1-
Frequency 2
(Frequency 1 must be lower
than Frequency 2)
550 FN N
L F GXXX.XXX
Product Family
VS = VCSO
Package
550 = 14 x 9 x 3.5 mm
Supply Voltage
L=3.3V +10%
Output
F = LV-PECL
Absolute Pull Range
G=+50 ppm
H = ±100 ppm
Other Other
Pin Symbol Function
1 VCVCSO Control Voltage
2 FS Frequency Select
Frequency 1 = 0.0 to 0.5V
Frequency 2 = 2.5 to 3.3V
3 GND Case and electrical ground
4 Output VCSO Output
5 COutput VCSO Complementary Output
6 VCC Power Supply Voltage (3.3 V ±10%)
inch
[mm]
.300
[7.62]
.026
[0.66]
.100
[2.54]
.200
[5.08]
.087
[2.21]
Outline Drawing Pad Layout
.350±.006
[8.89±0.15]
.550±.008
[13.97±0.2]
.018±.002
[0.46±0.05]
.100±.005
[2.54±0.13]
.200±.005
[5.08±0.13]
.135
+.008
-.012
[
3.42
+
0.2
-0.3
]
inch
[mm]
(.300 [7.63])
VS-550-LFF-GNN
XXX.XXX-XXX.XXX
VI YWW
1
4
3
6
2
5
Frequency 1
622.0800
Pin out information (MHz) Standard Frequencies (MHz)
Frequency 2
644.5313 666.5143
669.3265
Standard Frequencies (MHz)
VS-550
XXX.XXX
Other Frequencies available - consult factory.
VCSO
8798_AA's Vectron 05/30/02 3:11 PM Page 35
