Available at Digi-Key
www.digikey.com
Surface Mount
Oven Stabilized Oscillator
DOCAT Series
OCXO or VCOCXO
Description:
Connor-Winfield’s high stability
DOCAT Series is an exceptionally
precise frequency standard,
excellent for use in cellular
base stations, test equipment,
Synchronous Ethernet and VSAT
applications.
Based on an AT-cut crystal, the DOCAT
Series offers low aging and tight stability in a
9x14mm surface mount package.
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Features:
• OCXO or VCOCXO
• 3.3 Vdc Operation
• SMT Package
• Frequency Stabilities:
±20 ppb, ±50 ppb and ±100 ppb
• Temperature Ranges:
0 to 70°C, -20 to 75°C or -40 to 85°C
• Low Phase Noise
• LVCMOS Output
• RoHS Compliant / Lead Free
Package Outline
0.358
(9.1mm)
(8.51mm Max)
Suggested Pad Layout
0.060
(1.52mm)
0.085
(2.16mm)
0.060
(1.52mm)
0.100
(2.54mm)
0.100
(2.54mm)
0.335 Max
0.375
(9.52mm)
0.085
(2.16mm)
0.275
(6.99mm)
0.555
(14.1mm)
DNC
4
0.260
(6.60mm)
3
0.040
(1.02mm)
0.040
(1.02mm)
Top
5 View 2
6
1
Keep
Out
Area
Top
View
0.025
(0.64mm)
Side
View
Pad Connections
1: N/C or Voltage Control
2: Do Not Connect*
3: Ground
4: Output
5: Do Not Connect*
6: Supply Voltage (Vcc)
* Do Not Connect: Pins used for Internal Progamming.
Ordering Information
DOCAT
Oscillator
Type
3.3 Vdc
LVCMOS Output
Surface Mount
OCXO
02
Frequency
Stability
02 = ±20 ppb
05 = ±50 ppb
10 = ±100 ppb
Note: Frequency stability ±20 ppb over temperature range -40/85°C is not available in all frequencies. Contact factory for details.
Bulletin
Page
Revision
Date
Cx275
1 of 4
03
24 July 2018
Attention: System Designers please review Application Note AN2093:
System Design Information and Printed Circuit Board Layout Guidelines for OCXO Oscillators.
@ www.conwin.com/suppport.html
1
DNC
Bottom
View
DNC = Do Not Connect
Dimensional Tolerance: +/-0.005 (0.127mm)
0
Temperature
Range
0 = 0 to 70°C
1 = -20 to 75°C
2 = -40 to 85°C
F
Voltage Control
Option
F = OCXO
(Fixed Freq.)
V = VCOCXO
(Voltage Controlled)
-024.576M
Output
Frequency
Frequency Format
-xxx.xM Min *
-xxx.xxxxxxM Max *
*1 digit min, 6 digits max
after the decimal point.
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage - 3.3 Vdc (Vcc)
Control Voltage (Vc)
Minimum
-55
-0.5
-0.5
Nominal
-
-
-
Maximum
125
4.5
Vcc+0.5
Units
°C
Vdc
Vdc
Notes
Operating Specifications
Parameter
Center Frequency (Fo)
Frequency Stability vs. Change in Temperature
Option 02
Option 05
Option 10
Operating Temperature Range
Option 0
Option 1
Option 2
Frequency Calibration
Frequency Stability vs Load
Frequency Stability vs Voltage
Aging: Daily
Aging: First Year
Total Frequency Tolerance (20 Years)
Supply Voltage (Vcc)
Power Consumption Vcc = Nominal Voltage
Commercial Temperature Range: 0 to 70 °C
Turn On
Steady State @ 25°C
Industrial Temperature Range: -40 to 85 °C
Turn On
Steady State @ 25°C
Phase Jitter: (BW: 12 KHz to Fo/2 MHz @ Fo=40.0MHz)
Allan Deviation (Tau=1s) Fo=20MHz
Start-Up Time
Warm Up Time (Within Calibration @ 25°C)
Warm Up Time (Within Calibration @ -40°C)
Minimum
10
-20
-50
-100
0
-20
-40
-1.0
-20
-20
-10
-0.5
-4.6
3.13
-
-
-
-
-
-
-
-
-
Nominal
-
-
-
-
-
-
-
-
-
-
-
-
-
3.30
-
-
-
-
0.25
1.0E-10
-
-
-
Maximum
50
20
50
100
70
75
85
1.0
20
20
10
0.5
4.6
3.47
2.5
1.1
3.0
1.3
0.35
-
10
60
90
Units
MHz
ppb
ppb
ppb
°C
°C
°C
ppm
ppb
ppb
ppb/day
ppm
ppm
Vdc
W
W
W
W
ps RMS
ms
s
s
Notes
1
2
±5%
±5%
3
4
5
CMOS Output Characteristics
Parameter
Load
Output Voltage
Output Voltage: High (Voh)
Low (Vol)
Output Current: High (Ioh)
Low (Iol)
Duty Cycle at 50% of Vcc
Rise / Fall Time: 10% to 90%
Minimum
-
2.7
-
-4
-
45
-
Nominal
15
-
-
-
-
50
-
Maximum
-
-
0.3
-
4
55
6.5
Units
pF
V
V
mA
mA
%
ns
Notes
6
Typical Phase Noise Characteristics
Parameter
@ 1 Hz offset
@ 10 Hz offset
@ 100 Hz offset
@ 1 KHz offset
@ 10 KHz offset
@ 100 KHz offset
@ 1MHz offset
Fo=10 MHz
-72
-100
-128
-145
-151
-154
-155
Fo=24.576MHz
-70
-96
-125
-145
-151
-154
-155
Fo=40.0MHz
-67
-90
-116
-139
-147
-153
-153
dBC/Hz
dBC/Hz
dBC/Hz
dBC/Hz
dBC/Hz
dBC/Hz
dBC/Hz
Bulletin
Page
Revision
Date
Units
Notes
Attention: System Designers please review Application Note AN2093:
System Design Information and Printed Circuit Board Layout Guidelines for OCXO Oscillators.
@ www.conwin.com/technologies.html
Specifications subject to change without notification. See Connor-Winfield's website for latest revision.
© Copyright 2018 The Connor-Winfield Corporation
Not intended for life support applications.
Cx275
2 of 4
03
24 July 2018
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Input Characteristics - Voltage Controlled Option
Parameter
Control Voltage Range:
Frequency Pullability:
Input Impedance
Linearity
Minimum
0.30
±10.0
100K
-
Nominal
1.65
-
-
-
Maximum
3.00
±15.0
-
±5
V
ppm
Ohms
%
Units
Notes
7
8
Package Characteristics
DOC Package
Package consisting of a FR-4 substrate and Ryton-R-4 cover. Water Resistant package,
non-hermetic seal. (Engineering Properties of Ryton R-4 Application Note AN2100)
Environmental Characteristics
Shock
500 G’s 1ms, Halfsine, 3 shocks per direction, per MIL-STD 202G, Method 213B Test Condition D.
Sinusoidal Vibration
0.06” D.A. or 10G’s Peak, 10 to 500 Hz, per MIL-STD-202G, Method 204D, Test Condition A.
Random Vibration
5.35 G’s rms. 20 to 2000 Hz per MIL-STD-202G, Method 214,Test Condition 1A, 15 minutes each axis.
Moisture
10 cycles, 95% RH, Per MIL-STD-202G, Method 112.
Marking Permanency
Per MIL-STD-202G, Method 215J.
Solder Process Recommendations:
RoHS compliant, lead free. See solder profile on page 4.
In-line reflow:
Refer to recommended reflow pre-heat and reflow temperatures on page 4. Package material
consist of Ryton R-4 high temperature cover with FR4 substrate. Component solder is Pb free high
temperature eutectic alloy with a melting point of 221°C.
In-line oven profile:
We recommend using KIC profiler or similar device placing one of the thermocouples on the
device to insure that the internal package temperature does not exceed 221°C.
Removal of device:
If for any reason the device needs to be removed from the board, use a temperature controlled
repair station with profile monitoring capabilities. Following a monitored profile will insure the
device is properly pre-heated prior to reflow. Refer to IPC 610E for inspection guidelines.
Recommended Cleaning Process:
(If required)
Device is non-hermetic, water resistance with four weep holes, one in each corner to allow
moisture to be removed during the drying cycle. We recommend in-line warm water wash
with air knife and drying capabilities. If cleaner does not have drying capability, then use hot air
circulated oven. Boards should be placed in the oven vertically for good water runoff.
Device must be dried properly prior to use!
Note:
If saponifier is used make sure the device is rinsed properly to insure all residues are removed. PH of saponifier should
not exceed 10.
Drying Temperature:
Between 85 to 100°C.
Drying Time:
Time will vary depending on the board size.
Caution: Do not submerge the device!
Notes:
1. Frequency stability vs. change in temperature. [±(Fmax - Fmin)/(2*Fo)].
2. Initial calibration @ 25°C. For OCXO with voltage control option, the control voltage must be fixed.
3. After 10 days of operation
4. Inclusive of calibration @ 25°C, frequency vs. change in temperature, change in supply voltage (±5%), load change (±5%), shock and vibration
and 20 years aging
5 Minimum "Power On Time" after rail rises from 0 to within +/-5% of Vcc = 1 second.
Vcc ramp rate must be <0.3 volts per millisecond.
6. Attention: To achieve optimal frequency stability, and in some cases to meet the specification stated on this data sheet, it is required that the circuit
connected to this OCXO output must have the equivalent input capacitance that is specified by the nominal load capacitance. Deviations from the
nominal load capacitance will have a graduated effect on the stability of approximately 20 ppb per pF load difference.
7. Positive slope. (Frequency increases as Vc voltage increases). To ensure proper operation of VCOCXO's, the control voltage input must be biased
the nominal control voltage. Failure to bias the Vc input will cause an unstable output condition.
8. Referenced to Fo.
Attention: System Designers please review Application Note AN2093:
System Design Information and Printed Circuit Board Layout Guidelines for OCXO Oscillators.
@ www.conwin.com/technologies.html
Specifications subject to change without notification. See Connor-Winfield's website for latest revision.
© Copyright 2018 The Connor-Winfield Corporation
Not intended for life support applications.
Bulletin
Page
Revision
Date
Cx275
3 of 4
03
24 July 2018
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