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
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 Ranges Available:
-30 to 85°C or -40 to 85°C
Low Power <2mA
Low Jitter <1ps RMS
Tape and Reel Packaging
RoHS Compliant / Lead Free
Recommended for new designs
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 or
-40 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.
20.
03
C3 A
1
Applications
GPS Receivers
Pad Connections
1.
2.
3.
4.
VCTCXO - Control Voltage (Vc)
TCXO - N/C
Ground
Output
Supply Voltage (Vcc)
Package Layout
0.043 Max.
(1.10mm Max.)
Suggested Pad Layout
0.0325
(0.83mm)
0.037
(0.94mm)
0.037
(0.94mm)
0.098
(2.50mm)
0.039
(1.00mm)
20.0 3A
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
9 = TCXO, 2.5 Vdc, -40 to 85°C
0 = VCTCXO, 2.5 Vdc, -40 to 85°C
7 = TCXO, 3.3Vdc, -40 to 85°C
8 = VCTCXO, 3.3 Vdc, -40 to 85°C
A = TCXO, 2.8 Vdc, -30 to 85°C
B = VCTCXO, 2.8 Vdc, -30 to 85°C
C = TCXO, 2.8 Vdc, -40 to 85°C
D = VCTCXO, 2.8 Vdc, -40 to 85°C
3
1
Frequency Stability
1 =
±0.50
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*
*Amount of
numbers after the
decimal point.
M = MHz
Bulletin
Page
Revision
Date
TX211
1 of 4
08
28 Jan 2013
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
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)
Typical SSB Phase Noise for 26 MHz
@ 10Hz offset
@ 100Hz offset
@ 1KHz offset
@ 10KHz offset
@ 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
-
-
-
-
-
-
-
-
-
Operating Specifications
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
-
-
-
-
-
10
Vdc
Vdc
Vdc
mA
ps rms
ps rms
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ms
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
Control Voltage Characteristics
Minimum
0.2
0.4
0.5
±10
-
50K
10
Nominal
Maximum
2.2
2.4
2.5
-
±5
-
-
Units
V
V
V
ppm
%
Ohm
KHz
Notes
4
4
4
1.2
1.4
1.5
-
Positive Slope
-
-
-
Parameter
Clipped Sinewave Output Characteristics
Minimum
1.0
10pF // 10 KOhm
-
Load
Output Voltage
Package
Vibration:
Shock:
Soldering Process;
Nominal Maximum
-
Units
Notes
V peak to peak
5, 6
7
Hermetically sealed ceramic package and metal cover
Package Characteristics
Environmental Characteristics
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 4.
Notes:
1. Frequency stability vs. change in temperature [±(Fmax-Fmin)/(2*Fo)], 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
08
28 Jan 2013
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