Product Data Sheet
VC-800
Voltage Controlled Crystal Oscillator
Features
·
Worlds Smallest VCXO, 5.0 X 3.2 X 1.5 mm
·
High Frequencies to 51.84 MHz
·
5 or 3.3 V operation
·
Tri-State Output
·
Low jitter < 6pS rms for freq >12MHz
The VC-800 Voltage Controlled Crystal Oscillator
·
VCXO with CMOS outputs
·
0/70 or –40/85
°C
temperature range
·
Hermetically sealed ceramic SMD package
Applications
·
SONET/SDH
·
DWDM
·
xDSL/PCMCIA cards
ESD Diodes
·
Digital Video
Description
Vc
Input
Buffer
Output
Buffer /
Tri State
f
O
Vectron’s VC-800 Voltage Controlled Crystal
Oscillator (VCXO) is a quartz stabilized square
wave generator with a CMOS output and is
tested at CMOS and TTL logic levels (5 volt
operation).
The VC-800 is the smallest available VCXO
making it ideally suitable for PCMCIA
applications as well as any other where size is
limited but performance is required.
Vectron International 166 Glover Avenue, Norwalk CT 06856-5160
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
VC-800 Voltage Controlled Crystal Oscillator
Performance Characteristics
Table 1. Electrical Performance
Parameter
Frequency
1
Supply Voltage
(+3.3 V)
(+5.0 V)
Supply Current
Output Logic Levels
2
Output Logic High
2
Output Logic Low
Transition Times
2
Rise Time
2
Fall Time
3
Symmetry or Duty Cycle
Operating temperature (ordering
option)
Test Conditions for APR (+5V option)
Test Conditions for APR (+3.3V option)
Absolute Pull Range (ordering
option)
Gain Transfer (See figure 3)
Control Voltage Leakage Current
Control Voltage Bandwidth (-3dB)
Package Size
Symbol
f
O
V
DD
I
DD
V
OH
V
OL
t
R
t
F
SYM
V
C
V
C
APR
Min
1.544
2.97
4.5
0.9*V
DD
Typical
3.3
5.0
12
Maximum
51.84
3.63
5.5
25
0.1V
DD
5
5
55
4.5
3.0
Units
MHz
V
mA
V
V
nS
nS
%
°C
V
V
ppm
ppm/V
uA
kHz
mm
45
0.5
0.3
+/-50
+/- 80
+/-100
50
0/70 or –40/85
Positive
I
VCXO
BW
10
5.0x3.2x1.5
±1
1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.
2. Figure 1 defines these parameters. Figure 2 illustrates the equivalent five gate TTL load and operating conditions under which
these parameters are tested and specified.
3. Symmetry is defined as (ON TIME/PERIOD with Vs=-1.4 V for TTL and Vs=2.5 V for CMOS, 5 volt operation, and Vs=1.65V for
3.3 Volt operation.
4. Load Capacitor will depend on frequency.
T
R
80
%
T
F
I
DD
+
-
6
2
5
3
650W
Vs
20
%
On Time
Period
V
DD
.
1mF
.01mF
I
C
V
C
1
+
-
4
15pF
1.8k
Figure 1. Output Waveform
Figure 2. Typical Output Test Conditions (25±5°C)
Vectron International 166 Glover Avenue, Norwalk CT 06856-5160
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
VC-800 Voltage Controlled Crystal Oscillator
Outline Diagram, Pad Layout and Pin Out
6
5
4
1
2
3
Pin #
1
2
3
4
5
6
Symbol
V
C
GND
f
O
V
DD
Function
Control Voltage
Tri-state
Ground
Output Frequency
CMOS/TTL
Supply Voltage
Tape and Reel
J
F
D
A
E
C
G
B
L
I
H
K
Tape and Reel Dimensions (mm)
Tape Dimensions
Product
A
B
C
D
E
VC-800
12
5.5
1.5
4
8
Reel Dimensions
F
G
H
1.78
20.6
13
I
55
J
6
K
12.4
L
178
# Per
Reel
500
Vectron International 166 Glover Avenue, Norwalk CT 06856-5160
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
VC-800 Voltage Controlled Crystal Oscillator
Absolute Maximum Ratings
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.
Table 2. Absolute Maximum Ratings
Parameter
Symbol
Power Supply
V
DD
Storage Temperature
Tstorage
Voltage Control Range
V
C
Ratings
6
-55/125
0 to V
DD
Unit
Vdc
°C
V
200.0
150.0
100.0
Frequency Pull (ppm)
50.0
0.0
-50.0
-100.0
-150.0
-200.0
0.30
0.60
0.90
1.20
1.50
1.80
2.10
2.40
2.70
3.00
Control Voltage (volts)
Figure 3. Frequency Pull versus Control Voltage, 35.328MHz Output, 3.3 Volt supply
Vectron International 166 Glover Avenue, Norwalk CT 06856-5160
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
VC-800 Voltage Controlled Crystal Oscillator
Reliability
The VC-800 is capable of meeting the following qualification tests.
Table 3. 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 Precautions
Although ESD protection circuitry has been designed into the the VC-800, 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 thresholds are dependent on
the circuit parameters used to define the model. Although no industry wide standard has been adopted for
the CDM, a standard HBM of resistance=1.5Kohms and capacitance = 100pF is widely used and therefore
can be used for comparison purposes.
Table 4. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1500
1000
Conditions
MIL-STD-883 Method 3115
JESD 22-C101
TEMPERATURE(°C)
TIME(s)
Figure 4. Suggested IR profile
Vectron International 166 Glover Avenue, Norwalk CT 06856-5160
Tel:1-88-VECTRON-1
e-mail: vectron@vectron.com
