V-Type
Voltage Controlled Crystal Oscillator
V-Type
Description
Vectron’s V-Type Voltage Controlled Crystal Oscillator (VCXO) is a quartz stabilized square wave generator with a CMOS output. The V-Type uses
fundamental crystals resulting in low jitter performance and a monolithic IC which improves reliability and reduces cost.
Features
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CMOS output VCXO
Output Frequencies from 1.544 MHz to 77.760 MHz
5.0 or 3.3 V Operation
Fundamental Crystal Design with Low Jitter Performance
Output Disable Feature
Excellent 20ppm Temperature Stability,
0/70°C or -40/85°C Operating Temperature
Small Industry Standard Package, 5.0x7.5x1.8mm
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Applications
SONET/SDH/DWDM
Ethernet, SynchE
xDSL, PCMIA
Digital Video
Broadband Access
Base Stations, Picocells
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
V
DD
E/D or NC
Output
Crystal
Oscillator
V
C
E/D or NC
Page1
Gnd
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Performance Specifications
Table 1. Electrical Performance
Parameter
Voltage
1
, 5V option
3.3V option
Current
2
, 5V option
3.3V option
Nominal Frequency
3
Pull Range
2,6
, (Ordering Option)
Linearity
2
Gain Transfer
2
Temperature Stability
Output Logic Levels
2
Output Logic High
Output Logic Low
Load
Rise Time
2,4
Fall Time
2,4
Symmetry
2
Period Jitter
5,7
, RMS (61.44 MHz)
Period Jitter
5,7
, Peak - Peak (61.44 MHz)
Phase Noise
8
10Hz
100Hz
1kHz
10kHz
100kHz
1MHz
10MHz
Control Voltage
Control Voltage Range for Pull Range
Control Voltage Input Impedance
Control Voltage Leakage
Control Voltage Modulation BW
Output Enable/Disable
9
Output Enabled
Output Disabled
Start-Up Time
Operating Temp, (Ordering Option)
Package Size
1]
2]
3]
4]
5]
6]
7]
8]
9]
Symbol
V
DD
I
DD
Min
Supply
4.750
3.135
Typical
5.0
3.3
Maximum
5.250
3.465
55
40
Units
V
mA
Frequency
f
N
APR
Lin
K
V
f
STAB
Outputs
V
0.9*V
DD
0.1*V
DD
I
OUT
t
R
t
F
SYM
фJ
фJ
45
50
3.0
23
-55
-84
-113
-139
-151
-151
-151
V
C
Z
IN
BW
V
IH
V
IL
t
SU
T
OP
0/70 or -40/85
5.0 x 7.5 x 1.8
10
0.9*V
DD
0.1*V
DD
10
ms
°C
mm
0.5
0.3
5
±1
4.5
3.0
V
MΩ
uA
kHz
V
15
5
5
55
pF
ns
ns
%
ps
ps
dBc/Hz
1.544
±50, ±80, ±100
5
Positive, +65
±20
77.760
MHz
ppm
%
ppm/V
ppm
The power supply should have by-pass capacitors as close to the supply and to ground as possible, for examples 0.1 and 0.01uF
Parameters are tested with production test circuit below (Fig 1).
See Standard Frequencies and Ordering Information tables for more specific information
Measured from 20% to 80% of a full output swing (Fig 2).
Not tested in production, guaranteed by design, verified at qualification.
Tested with Vc = 0.3V to 3.0V unless otherwise stated in part description
Broadband Period Jitter measured using Wavecrest SIA3300C, 90K samples, see Application Note for Typical Phase Noise and Jitter Performance
Phase Noise is measured with an Agilent E5052A, see Application Note for Typical Phase Noise and Jitter Performance
The Output is Enabled if the Enable/Disable is left open.
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page2
Test Circuit
Waveform
I
DD
0.8*VDD
4
+
V
DD
-
.1μF
.01μF
I
C
V
C
1
+
-
3
2
15pF
50%
0.2*VDD
t
R
t
F
On Time
Period
Fig 1: Test Circuit
Fig 2: Waveform
Table 2. Absolute Maximum Ratings
Parameter
Power Supply
Voltage Control Range
Storage Temperature
Soldering Temp/Time
Symbol
V
DD
V
C
TS
T
LS
Ratings
0 to 6
0 to V
DD
-55 to 125
260 / 20
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 datasheet. Exposure to absolute maximum
ratings for extended periods may adversely affect device reliability. Permanent damage is also possible if OD or Vc is applied before Vcc.
Typical Phase Noise
Typical Gain
V-Type @ 61.44 MHz
150
120
100
100
50
80
Vc (volts)
0
0
0.5
1
1.5
2
2.5
3
60
Gain (ppm/V)
Pull (ppm)
Pull
Gain
-50
40
-100
20
-150
0
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page3
Reliability
VI qualification includes aging at various extreme temperatures, shock and vibration, temperature cycling, and IR reflow
simulation. The V-Type family 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
Moisture Sensitivity Level
Contact Pads
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
MSL 1
Gold over Nickel
Handling Precautions
Although ESD protection circuitry has been designed into the V-Type proper precautions should be taken when handling and
mounting. VI employs a human body model (HBM) and a charged device model (CDM) for ESD susceptibility testing and design
protection evaluation.
Table 4. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
500V
500V
Conditions
MIL-STD-883, Method 3015
JESD22-C101
Table 5. Reflow Profile
Parameter
PreHeat Time
Ts-min
Ts-max
Ramp Up
Time Above 217 °C
Time To Peak Temperature
Time at 260 °C
Ramp Down
Symbol
t
S
Value
60 sec Min, 180 sec Max
150°C
200°C
3 °C/sec Max
60 sec Min, 150 sec Max
480 sec Max
20 sec Min, 40 sec Max
6 °C/sec Max
R
UP
t
L
T
25C to peak
t
P
R
DN
The device is qualified 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 V-Type device is hermetically sealed so an
aqueous wash is not an issue.
Termination Plating:
Electroless Gold Plate over Nickel Plate
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Page4
Outline Drawing & Pad Layout
VDUGLD
61.440
FREQUENCY
VI NNN
Dimensions in inches (mm)
Table 6. Pin Out
Pin
1
2
3
4
5
6
Symbol
V
C
E/D
GND
Output
E/D
Function
VCXO Control Voltage
Enable Disable or NC
Case and Electrical Ground
Output
Enable Disable or NC
Power Supply Voltage
V
DD
Tape & Reel (EIA-481-2-A)
Table 7. Tape and Reel Information
Tape Dimensions (mm)
Dimension
Tolerance
V-Type
Reel Dimensions (mm)
Po
Typ
4
W
Typ
16
F
Typ
7.5
Do
Typ
1.55
P1
Typ
8
A
Typ
178
B
Min
1.78
C
Typ
13
D
Min
20.6
N
Min
55
W1
Typ
12.4
W2
Max
22.4
# Per
Reel
500
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
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