VC-501
Voltage Controlled Crystal Oscillator
Features
Industry
Standard Package, 14.0 x 9.0 x 4.5 mm
Output
Frequencies from 100.00 MHz to 200 MHz
3.3
V Operation
HFF/fundamental
crystal for ultra low jitter
Complementary
PECL Outputs
Low
phase noise and custom options
0/70
or
–
C
40/85 operating temperature
C
Enable
/Disable (PECL)
Applications
PLL circuits for Clock Smoothing and Frequency Translation
Fiber
Channel
SONET
SDH,
ITU-T G.709
SONET,
GR-253-CORE Issue3
Description
The VC-501 is a voltage controlled crystal oscillator that
operates at the fundamental frequency of the internal HFF
crystal. The HFF crystal 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 an industry standard hermetically sealed leadless
surface mount package and is available on tape and reel.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 4 20Sep2004
Page 1 of 6
VC-501 Voltage Controlled Crystal Oscillator
Electrical Performance
Parameter
Frequency
Supply Voltage
(+3.3 V)
Supply Current
Output Logic Levels
Output Logic High
Output Logic Low
Output Logic High
Output Logic Low
Transition Times
Rise Time
Fall Time
Symmetry or Duty Cycle
Operating temperature (ordering
option)
Jitter (12 kHz
–20
MHz BW), 155.52 MHz
Jitter (50 kHz
–80
MHz BW), 155.52 MHz
Symbol
f
O
V
DD
I
DD
Min
100.000
3.135
Typical
155.52
3.3
50
Maximum
200
3.465
90
V
DD
-0.880
V
DD
-1.620
V
DD
-0.880
V
DD
-1.555
Units
MHz
V
mA
V
V
V
V
0/70 ºC
0/70 ºC
-40/85 ºC
-40/85 ºC
V
OH
V
OL
V
OH
V
OL
t
R
t
F
SYM
V
DD
-1.025
V
DD
-1.810
V
DD
-1.085
V
DD
-1.830
0.5
0.5
45
50
0/70 or
–
40/85
0.3
0.5
1
1
55
1
ns
ns
%
C
ps (rms)
ps (rms)
Phase Noise, f
0
= 155.52 MHz
10 Hz offset
100 Hz offset
1kHz offset
10 kHz offset
100 kHz offset
1 MHz offset
10 MHz offset
Test Conditions for APR (+3.3V)
Absolute Pull Range (APR)
Gain Transfer
Control Voltage Bandwidth (-3dB)
Package Size
BW
20
V
C
APR
0.3
+ 50
-64
-95
-123
-143
-146
-146
-146
3.0
Positive
100
14.0 x 9.0 x 4.5
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
V
ppm
ppm/V
kHz
mm
(-1.3V to +2V)
1
6
(+2V)
t
R
t
F
SYM = 100 x t
A
/ t
B
V
OH
80%
>1.4V or Open
2
(-1.3V)
5
COutput
3
4
50
Output
50%
50
20%
t
A
V
OL
Test Circuit Notes:
1) To Permit 50 Measurement of Outputs, all DC Inputs are Biased Down 1.3V.
2) All Voltage Sources Contain Bypass Capacitors to Minimize Supply Noise.
3) 50
Terminations are W ithin Test Equipment.
t
B
Figure 1. Test Circuit ( 3.3 V)
Figure 2. PECL Waveform
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Rev: 4 20Sep2004
Page 2 of 6
VC-501 Voltage Controlled Crystal Oscillator
Suggested Output Load Configurations
+3.3V
+3.3V
0.10
F
0.01
F
150
150
+3.3V
Suggested Output Load Configurations
0.01
F
0.10
F
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
Z = 50
Z = 50
100
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
Z = 50
Z = 50
40
40
49
49
240
240
LV-PECL to LV-PECL:
For short transmission lengths, the power
consumption could be reduced by removing the 100
resistor and
doubling the value of the pull down resistors.
LV-PECL to LVDS:
Restricted for short transmission lengths.
Configuration may require modification depending on LVDS receiver.
+3.3V
0.10
F
0.01
F
0.10
F
0.01
F
+2.0V
Vc
OD
Gnd
1
2
3
6
5
4
Vcc
COutput
Output
0.01
F
0.01
F
Vc
OD
-1.3V
1
2
3
6
5
4
Vcc
COutput
Output
240
240
Functional Test:
Allows standard power supply configuration.
Since AC coupled, the LV-PECL levels cannot be measured.
Production Test:
Allows direct DC coupling into 50
measurement
equipment. Must bias the power supplys as shown. Similar to Figure 1.
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Page 3 of 6
VC-501 Voltage Controlled Crystal Oscillator
Outline Diagram
Pad Layout
Dimensions are in
inches and (millimeters)
0.118
(3.00)
0.200
(5.08)
0.050
(1.27)
0.100
(2.54)
0.346
(8.80)
Pin Out
Pin
1
2
3
4
5
6
Symbol
V
C
OE
GND
Output
COutput
V
CC
Function
VCXO Control Voltage
Enable / Disable
Ordering option, standard
F
configuration:
Output is Enabled = High or Open
Output is Disabled = Low (High impedance output, Oscillator running)
Case and Electrical Ground
Output
Complementary Output
Power Supply Voltage (3.3 V)
Tape and Reel (EIA-481-2-A)
Po
ØDo
W2
F
W
D
C
N
A
P1
W1
B
Tape Dimensions (mm)
Dimension
Tolerance
VC-501
Reel Dimensions (mm)
F
Do
Typ
1.5
W
Typ
24
Po
Typ
4
P1
Typ
12
A
Typ
330
B
Min
1.78
C
Typ
13
D
Min
21
N
Min
100
W1
Typ
25
W2
Max
30
Typ
11.5
# Per
Reel
200
Absolute Maximum Ratings
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Website: www.vectron.com
Page 4 of 6
VC-501 Voltage Controlled Crystal Oscillator
Parameter
Power Supply
Voltage Control Range
Storage Temperature
Soldering Temp/Time
Symbol
V
CC
V
C
TS
T
LS
Ratings
0 to 6
0 to V
CC
-55 to 125
240/10
Unit
V
V
C
C/sec
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 data sheet. Exposure to absolute maximum
ratings for extended periods may adversely affect device reliability.
Reliability
The VC-501 family is capable of meeting the following qualification 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 2015
Handling Precautions
Although ESD protection circuitry has been designed into the VC-501 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
500
500
Conditions
MIL-STD 883, Method 3015
JESD 22-C101
Recommended Solder Reflow Profile
2 20
Temperature (Deg C)
18 3
15 0
60
6 0-90
45-6 0
T im e (s)
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR
reflow simulation. The conditions a device can withstand are well understood and devices can be subjected to
the profile above. This profile shows a ramp up condition to prevent thermal shock, a preheat period in which the
flux is activated, a ramp up to 183 which is the reflow temperature of Sn/Pb eutectic, and a gradual cool down.
C
The time above 183 should not exceed 60 seconds and the peak temperature should be no more than 240
C
C
for 10 seconds. The VC-501’
aeh r tay e l s a a u o s a hin t ni u .
s r emei l s a d o n q e u w s s o a s e
cl
e
s
Standard Frequencies (MHz)
100.00
106.250
125.000
155.520
156.250
161.1328
167.3316
Website: www.vectron.com
Vectron International, 267 Lowell Rd, Hudson NH 03051-4916
Tel: 1-88-VECTRON-1
Page 5 of 6
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