Ultra-Miniature
Precision
TCXO / VCTCXO
Description
2111 Comprehensive Drive
2111 Comprehensive Drive
Aurora, Illinois 60505
Aurora, Illinois 60505
Phone: 630- 851- 4722
Phone: 630- 851- 4722
Fax: 630- 851- 5040
Fax: 630- 851- 5040
www.conwin.com
www.conwin.com
US Headquarters:
630-851-4722
European Headquarters:
+353-61-472221
Features
0H 1
0M C3
2
The Connor-Winfield 2.5x3.2mm
Temperature Compensated Crystal
Oscillators and Voltage Controlled
Temperature Compensated Crystal
Oscillators are designed for use in GPS
applications requiring tight frequency stability
over the -30 to 85°C temperature range.
Through the use of Analog Temperature
Compensation, this device is capable of
holding sub 1-ppm stabilities over the wide
temperature range.
Model: Cxx - Series
2.5 Vdc, 2.8 Vdc or 3.3 Vdc Operation
Clipped Sinewave Output Logic
Ultra-Miniature 2.5x3.2mm SMT Package
Frequency Stabilities Available:
±0.50ppm, ±1.00ppm, ±1.50ppm or
±2.00ppm
Temperature Range: -30 to 85°C
Low Power <2mA
Low Jitter <1pS RMS
Tape and Reel Packaging
RoHS Compliant / Lead Free
Recommended for new designs
Applications
GPS Receivers
Pad Connections
1.
2.
3.
4.
VCTCXO - Control Voltage (Vc)
TCXO - N/C
Ground
Output
Supply Voltage (Vcc)
Package Layout
Suggested Pad Layout
0.098
(2.50mm)
0.043 Max.
(1.10mm Max.)
0.039
(1.00mm)
0.0325
(0.83mm)
0.037
(0.94mm)
0.037
(0.94mm)
20M 0H
C31
0.128
(3.20mm)
0.025
(0.64mm)
0.121
0.071 (3.08mm)
(1.80mm)
3
Top
View
2
0.035
(0.89mm)
0.0625
(1.59mm)
Pin 1
0.027
(0.69mm)
4
1
0.035
(0.89mm)
0.094
(2.38mm)
Dimensional Tolerance:
+/-005 (+/-0.127mm)
Keep Out Area*
* Do not route any traces in the keep out area.
It is recommended the next layer under the
keep out area is to be ground plane.
Ordering Information
C
Oscillator Type
Precision
TCXO
VCTCXO
2.5x3.2mm
Package
Features
1 = TCXO, 2.5 Vdc, -30 to 85°C
2 = VCTCXO, 2.5 Vdc, -30 to 85°C
3 = TCXO, 3.3Vdc, -30 to 85°C
4 = VCTCXO, 3.3 Vdc, -30 to 85°C
A = TCXO, 2.8 Vdc, -30 to 85°C
B = VCTCXO, 2.8 Vdc, -30 to 85°C
3
1
Frequency Stability
1 =
±050
ppm
2 =
±1.00
ppm
3 =
±1.50
ppm
4 =
±2.00
ppm
-020.0M
Output Frequency
Frequency
Format
-xxx.xM Min.*
-xxx.xxxxxxM Max*
Bulletin
Page
Revision
Date
TX211
1 of 4
P07
02 Mar 2012
*Amount of
numbers after the
decimal point.
M = MHz
Example Part Numbers:
C31-020.0M =2.5x3.2mm package,
TCXO, 3.3 Vdc
-30 to 85°C,
±0.50
ppm, Clipped Sinewave Output with an Output Frequency of 20.0MHz
C21-026.0M =2.5x3.2mm package, VCTCXO,
2.5 Vdc
-30 to 85°C,
±0.50
ppm, Clipped Sinewave Output with an Output Frequency of 26.0MHz
Please consult the factory for available frequencies.
Specifications subject to change without notice. All dimensions in inches. © Copyright 2010 The Connor-Winfield Corporation
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Model Specifications
Model Number
TCXO / VCTCXO
Supply Voltage (Vcc)
Frequency Stability
Operating Temperature Range
TCXO
2.5 Vdc
C11
TCXO
2.8 Vdc
CA1
TCXO
VCTCXO
3.3 Vd
2.5 Vdc
±0.50 ppm
-30 to 85
°C
TCXO
VCTCXO
3.3 Vd
2.5 Vdc
±1.00 ppm
-30 to 85
°C
TCXO
VCTCXO
3.3 Vd
2.5 Vdc
±1.50 ppm
-30 to 85
°C
TCXO
VCTCXO
3.3 Vd
2.5 Vdc
±2.00 ppm
-30 to 85
°C
C31
C21
VCTCXO VCTCXO
2.8 Vdc 3.3 Vdc
CB1
C41
Notes
1
Model Number
TCXO / VCTCXO
Supply Voltage (Vcc)
Frequency Stability
Operating Temperature Range
TCXO
2.5 Vdc
C12
TCXO
2.8 Vdc
CA2
C32
C22
VCTCXO VCTCXO
2.8 Vdc 3.3 Vdc
CB2
C42
Notes
1
Model Number
TCXO / VCTCXO
Supply Voltage (Vcc)
Frequency Stability
Operating Temperature Range
TCXO
2.5 Vdc
C13
TCXO
2.8 Vdc
CA3
C33
C23
VCTCXO VCTCXO
2.8 Vdc 3.3 Vdc
CB3
C43
Notes
1
Model Number
TCXO / VCTCXO
Supply Voltage (Vcc)
Frequency Stability
Operating Temperature Range
TCXO
2.5 Vdc
C14
TCXO
2.8 Vdc
CA4
C34
C24
VCTCXO VCTCXO
2.8 Vdc 3.3 Vdc
CB4
C44
Notes
1
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage (Vcc)
Input Voltage (Vc)
Minimum
-40
-0.5
-0.5
Nominal
-
-
-
Maximum Units
85
6.0
Vcc+0.5
°C
Vdc
Vdc
Notes
Operating Specifications
Parameter
Center Frequency
Frequency Calibration @ 25 °C
Supply Voltage Variation (Vcc±5%)
Load Coefficient (±5%)
Aging per year
Static Temperature Hysteresis
Frequency shift after reflow soldering
Supply Voltage (Vcc)
2.5 Vdc Models
2.8 Vdc Models
3.3 Vdc Models
Supply Current (Icc)
Period Jitter
Integrated Phase Jitter (BW=12 Khz to 20 MHz)
SSB Phase Noise at 10Hz offset
SSB Phase Noise at 100Hz offset
SSB Phase Noise at 1KHz offset
SSB Phase Noise at 10KHz offset
SSB Phase Noise at 100KHz offset
Start-up Time
Minimum
10
-1.0
-0.025
-0.025
-1.0
-0.4
-1.0
2.375
2.660
3.135
-
-
-
-
-
-
-
-
Nominal
-
-
-
-
-
-
-
Maximum Units
40
1.0
0.025
0.025
1.0
0.4
1.0
MHz
ppm
ppm
ppm
ppm
ppm
ppm
Notes
2
3
2.500
2.800
3.300
-
3
0.3
-80
-110
-130
-145
-150
-
2.625
2.940
3.465
2
5
1.0
-
-
-
-
-
5
Vdc
Vdc
Vdc
mA
ps rms
ps rms
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ms
Bulletin
Page
Revision
Date
TX211
2 of 4
P07
02 Mar 2012
Specifications subject to change without notice. All dimensions in inches. © Copyright 2010 The Connor-Winfield Corporation
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Control Voltage Characteristics
Control Voltage (Vc)
2.5 Vdc Models
2.8 Vdc Models
3.3 Vdc Models
Frequency Pullibility @ 25°C
Control Slope
Monotonic Linearity
Input Impedance
Modulation Bandwidth (3dB)
Parameter
Minimum
0.2
0.4
0.5
±10
-
50K
10
Nominal
1.2
1.4
1.5
-
Positive Slope
-
-
-
Maximum
2.2
2.4
2.5
-
±5
-
-
Units
V
V
V
ppm
%
Ohm
KHz
Notes
4
4
4
Clipped Sinewave Output Characteristics
Parameter
Load
Output Voltage
Minimum
1.0
10pF // 10 KOhm
-
Nominal Maximum
-
Units
V peak to peak
Notes
5, 6
7
Package Characteristics
Package
Hermetically sealed ceramic package and metal cover
Environmental Characteristics
Vibration:
Shock:
Soldering Process;
Vibration per Mil Std 883E Method 2007.3 Test Condition A
Mechanical Shock per Mil Std 883E Method 2002.4 Test Condition B.
RoHS compliant lead free. See soldering profile on page 2.
Notes:
1. Frequency stability vs. change in temperature [±(Fmax-Fmin)/2.Fo], referenced to frequency measured @ 25°C, Vc = nominal control voltage for VCTCXO models.
2. Initial calibration @ 25°C, Vc = nominal control voltage for VCTCXO models. Specification at the time of shipment after 48 hours of operation.
3. Frequency change after reciprocal temperature ramped over the operating range. Frequency measured before and after @ 25°C.
4. For best application performance, careful selection of an external power source is critical. Select an external regulator that meets or exceeds to following
specifications regarding voltage regulation tolerance, initial accuracy, temperature coefficient, voltage noise, and low voltage noise density. Factory Test Conditions:
Initial Accuracy ±2mv, Noise (0.1Hz to 10 KHz) 15uV p-p, Voltage Noise Density = 50nV/sqrt Hz, Temperature Coefficient < 5ppm/°C.
5. Attention: To achieve the frequency stability specified it is required that the circuit connected to this TCXO 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 20ppb per pF
load difference.
6. Load capacitor, load resistor, coupling capacitor and by pass capacitors are required components to insure proper operation of this TCXO / VCTCXO.
7. Output is DC coupled.
Bulletin
Page
Revision
Date
Specifications subject to change without notice. All dimensions in inches. © Copyright 2010 The Connor-Winfield Corporation
TX211
3 of 4
P07
02 Mar 2012
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Test Circuit
Vcc
Supply
Voltage
AC Coupling
Capacitor *
4
3
10Kohm *
0.1 uF
Bypass *
10 nF
Bypass *
1
Pad 1
TCXO = N/C
VCTCXO = Vc
2
0
Output Waveform
Output
10 pF *
200 mV/Div
* Required components to insure proper operation.
Typical Phase Noise Plot
Typical Phase Noise C31-026.0M
Solder Profile
Temperature
260°C
220°C
180°C
150°C
120°C
260°C
0
10 s
Up to 120 s
60 to 90 s
Typical
Typical
Meets IPC/JEDEC J-STD-020C
Tape and Reel Information
Direction of Feed (Customer)
0.157
(4.0mm)
0.079
(2.0mm)
0.039
(1.0mm) DIA
0.069
(1.75mm)
0.138
(3.5mm) 0.315
(8.0mm)
0.039
(1.0mm) DIA
0.512
(13mm)
0.051
(1.3mm)
0.354
(9mm)
0.051
(1.3mm)
0.079
(2mm) 7.09
(180mm)
2.36
(60mm)
0.157
(4.0mm)
Bulletin
Page
Revision
Date
TX211
4 of 4
P07
02 Mar 2012
Specifications subject to change without notice. All dimensions in inches. © Copyright 2010 The Connor-Winfield Corporation
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