VS-502
Voltage Controlled SAW Oscillator
VS-502
Description
The VS-502 is a SAW based voltage controlled oscillator that operates at the fundamental frequency of the internal SAW
resonator. This direct approach enables this series to achieve low phase noise and jitter performance at high output frequencies
and over wide operating temperature range. The oscillator is housed in a hermetically sealed J-lead surface mount package
o ered on tape and reel. As an option, it has an output disable to facilitate on-board testing.
Features
•
•
•
•
Ultra low jitter
Low phase noise
Small low pro le
Frequency Range: 300 MHZ to 1350 MHZ
Applications
• Point to Point / Point to Multi Point Radios
• Instrumentation
• Test & Measurement
Performance Speci cations
Parameter
vs. operating temperature range
(referenced to +25°C)
Absolute Pull Range
Min
Typ
±200
±50
±32
±20
Max
Units
ppm
ppm
ppm
ppm
Condition
-40… +85°C
Frequency Stabilities
Supply Voltage (Vs)
Supply voltage
Supply voltage
Supply voltage
Current (No Load)
11.4
4.75
3.135
12.0
5.0
3.3
55
12.6
5.25
3.465
70
VDC
VDC
VDC
mA
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Speci cations
Parameter
Signal
Signal Level (Vol)
Signal Level (Voh)
Rise & Fall Time
Duty cycle
Signal
0
+3
+7
+10
-20
0.035
0.035
0.050
0.050
45
-1.125
200
49/51
350
55
Min
Typ
Max
RF Output
PECL
-1.525
Units
Condition
VDC
VDC
ps
%
Sinewave
dBm
dBm
dBm
dBm
dBc
ps, rms
ps, rms
50 Ohm load
50 Ohm load
50 Ohm load
50 Ohm load
Output Power
Harmonics
Jitter @ 622.08 MHz (12 kHz to 20 MHz)
Jitter @ 622.08 MHz (50 kHz to 80 MHz)
Frequency Tuning
Linearity
Gain Transfer
Input Impedance
Modulation BW (Driven from Low Imped-
ance)
100
100
20
10
+100
+200
+300
%
%
ppm/V
ppm/V
ppm/V
kohm
KHz
with Vs=12.0V
with Vs=3.3V or 5.0V
with Vs=12.0V
with Vs=5.0V
with Vs=3.3V
Absolute Maximum Ratings
Parameter
Power Supply
Voltage Control Range
Storage Temperature
Soldering Temp/Time
Symbol
VCC
VC
TS
TLS
Ratings
VCC + 1.0V
-0.5 to VCC +0.5V
-55 to +125
+260/40
Unit
V
V
°C
°C
Stresses in excess of the absolute maximum ratings can permanently damage the device. Functional operation is not
implied at these or any other conditions in excess of conditions represented in the operational sections of this datasheet.
Exposure to absolute maximum ratings for extended periods may adversely a ect device reliability.
Table Notes:
1. See Standard Frequencies and Ordering Information.
2. Parameters are tested with production test circuit.
3. Parameters are tested at ambient temperature with test limits guard-banded for speci ed operating temperature.
4. Measured as the maximum deviation from the best straight-line t, per MIL-0-55310.
5. Output levels are standard 100K PECL compatible and measured from 20% to 80% of a full output swing (Fig 1).
6. Not tested in production, guaranteed by design, veri ed at quali cation.
7. Integrated across 12 kHz to 20 MHz, or 50 KHz to 80 MHz per GR-253-CORE Issue3. LVPECL Output.
8. Tested with Vc = 0.3V to 3V for 3.3V supply, Vc = 0.5V to 4.5 V for 5V supply, Vc = 0.5V to 11.5V for 12V supply.
9. Maximum frequency occurs at room temperature.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
t
R
80%
t
F
SYM = 100 x t
A
/ t
B
Vcc - 1.0V
Pin Connections - PECL Option
Vcc - 1.3V
1
2
3
4
5
6
VC - VCSO Control Voltage
N/C or Output Disable 1
Case and Electrical Ground
VCSO Output
VCSO Complementary Output
Power Supply Voltage
20%
Vcc - 1.6V
t
A
t
B
Figure 1. 100K PECL Waveform
Table Notes:
1. By setting Output Disable pin high, the RF output is disabled
and pin 4 is held high, pin 5 is held low. The threshold for
Output Disable is 2.3V above pin 3. Output disable pin can be
left floating for normal operation.
Suggested Output Load Con guration
LVPECL Operation
PECL Operaton
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Pin Connections - Sinewave Option
1
2
3
4
5
6
VC - VCSO Control Voltage
N/C
Case and Electrical Ground
VCSO Output
Vcc2 - Supply
Vcc1 - Supply
Table Notes:
1. If Vcc1 is +12V and a separate 5V is not applied to pin 5 then pin 5 must be connected through a 220 ohm 1/4W
external resistor.
Suggested Output Load Con guration - Sinewave Operation
+12V
Vcc
From PLL
1
NC
2
3
5
4
Output AC Coupled with
50 Ώ to ground
6
220 Ώ
1/4W
0.01uF
NC
2
0.01uF
3
4
Output AC Coupled with
50 Ώ to ground
5
0.01uF
0.1uF
+5V
Vcc
From PLL
1
6
0.01uF
0.1uF
Tape and Reel (EIA-481-2-A)
Po
ØDo
W2
F
W
D
C
N
A
P1
W1
B
Tape Dimensions (mm)
Dimension
Tolerance
VS-502
W
Typ
24
F
Typ
11.5
Do
Typ
1.5
Po
Typ
4
P1
Typ
12
A
Typ
330
B
Max
1.5
C
Reel Dimensions (mm)
D
Max
20.2
N
Max
100
W1
Typ
24.4
W2
Max
30.4
# Per
Reel
200
Typ
13
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Reliability
The VS-502 family is capable of meeting the following quali cation tests:
Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Solderability
Gross and Fine Leak
Resistance to Solvents
Conditions
MIL-STD-883, Method 2002
MIL-STD-883, Method 2007
MIL-STD-883, Method 2003
MIL-STD-883, Method 1014
MIL-STD-883, Method 2016
Handling and Precautions
Although ESD protection circuitry has been designed into the VS-502 proper precautions should be taken when handling
and mounting. VI employs a human body model and a charged-device model (CDM) for ESD susceptibility testing and
design protection evaluation.
ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1500 V
1000 V
Conditions
MIL-STD 883, Method 3015
JESD 22-C101
Re ow Pro le (IPC/JEDEC J-STD-020)
Parameter
PreHeat Time
Ramp Up
Time Above 217°C
Time To Peak Temperature
Time At 260°C
Ramp Down
Symbol
tS
R UP
tL
t AMB-P
tP
R DN
Value
60 sec Min, 180 sec Max
3 °C/sec Max
60 sec Min, 150 sec Max
480 sec Max
20 sec Min, 40 sec Max
6 °C/sec Max
260
t
L
R
t
P
R
DN
t
S
t
AMB-P
Temperature (DegC)
The device is designed to meet the JEDEC standard for Pb-
Free assembly. The temperatures and time intervals listed
are based on the Pb-Free small body requirements. The
VS-502 device is hermetically sealed so an aqueous wash is
not an issue.
Termination Plating:
Electroless Gold Plate over Nickel Plate
217
200
150
25
Time (sec)
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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