Available at Digi-Key
www.digikey.com
5x7mm
Precision TCXO
Model D75A
Description:
Features:
D7
5
12 A 11
.8
4
MH 4
Z
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
US Headquarters:
630-851-4722
European Headquarters:
+353-61-472221
The Connor-Winfield’s D75A is a 5x7mm
Surface Mount Temperature Compensated
Crystal Controlled Oscillator (TCXO) with a
Tri-State LVCMOS output. Through the use
of Analog Temperature Compensation, the
D75A is capable of holding sub 1-ppm sta-
bilities over the 0 to 70°C temperature range.
The D75A meets STRATUM 3 requirements.
Applications:
•
•
•
•
•
•
•
3.3 Vdc Operation
•
LVCMOS Output
•
Frequency Stability: ± 0.28 ppm
•
Temperature Range: 0 to 70°C
•
Low Jitter <1ps RMS
•
Tri-State Enable/Disable Function
•
5x7mm Surface Mount Package
•
Tape and Reel Packaging
•
RoHS Compliant / Pb Free
IEEE 1588 Applications
Synchronous Ethernet slave clocks, ITU-T G.8262 EEC options 1 & 2
Compliant to Stratum 3, GR-1244-CORE & GR-253-CORE
Wireless Communications
Small Cells
Test and Measurement
Absolute Maximum Ratings
Minimum
-55
-0.5
-0.5
Parameter
Nominal
-
-
-
Maximum
85
6.0
Vcc+0.5
Units
°C
Vdc
Vdc
Notes
Storage Temperature
Supply Voltage (Vcc)
Input Voltage
Operating Specifications
Parameter
Minimum
Nominal
Maximum
Units
MHz
ppm
ppm
ppm
ppm
ppm
ppm
ppm
°C
Vdc
mA
ps rms
ps rms
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ms
Notes
1
2
3
±5%
±5%
Absolute, 4
5
±5%
Nominal Frequency (Fo)
Frequency Calibration @ 25 °C
Frequency Stability vs. Temperature
Holdover Stability (Over 24 Hours)
Frequency vs. Load Stability
Frequency vs. Voltage Stability
Static Temperature Hysteresis
Total Frequency Tolerance:
Operating Temperature Range:
Supply Voltage (Vcc)
Supply Current (Icc)
Period Jitter
Integrated Phase Jitter
SSB Phase Noise (Fo = 10 MHz)
@10Hz offset
@ 100Hz offset
@ 1KHz offset
@ 10KHz offset
@ 100KHz offset
Start-up Time
-
10.0, 12.8, 19.2, or 20.0
-
-1.0
-
1.0
-0.28
-
0.28
-0.32
-
0.32
-0.20
-
0.20
-0.20
-
0.20
-
-
0.4
-4.6
-
4.6
0
-
70
3.135
3.3
3.465
-
-
6
-
3
5
-
0.5
1.0
-
-
-
-
-
-
-80
-110
-135
-150
-150
-
-
-
-
-
-
10
6
Enable / Disable Input Characteristics (Pad 8)
Parameter
Minimum
70%Vcc
-
Nominal
-
Maximum
-
30%Vcc
Units
Vdc
Vdc
Notes
7
7
Enable Voltage (High)
Disable Voltage (Low)
LVCMOS Output Characteristics
Parameter
Minimum
-
90%Vcc
-
45
-
Nominal
15
-
-
50
-
Maximum
-
-
10%Vcc
55
8
Units
pF
Vdc
Vdc
%
ns
Notes
8
Load
Voltage (High) (Voh)
(Low)
(Vol)
Duty Cycle at 50% of Vcc
Rise / Fall Time 10% to 90%
Notes:
Bulletin
Page
Revision
Date
Tx236
1 of 3
03
09 Jan 2014
1. Initial calibration @ 25°C. Specifications at time of shipment after 48 hours of operation.
2. Frequency stability vs. change in temperature. [±(Fmax - Fmin)/(2*Fo]).
3. Inclusive of frequency stability, supply voltage change (±1%), load change, aging, for 24 hours.
4. Frequency change after reciprocal temperature ramped over the operating range. Frequency measured before and after at 25°C.
5. Inclusive of calibration @ 25C, frequency vs. change in temperature, change in supply voltage (±5%), load change (±5%), reflow soldering process and 20 years
aging, referenced to Fo
6. BW = 12 KHz to 20 MHz.
7. Leave Pad 8 unconnected if enable / disable function is not required. When tri-stated, the output stage is disabled but the oscillator and compensation circuit are
still active (current consumption < 1 mA).
8. For best performance it is recommended that the circuit connected to this output should have an equivalent input capacitance of 15pF.
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Package Characteristics
Package
Hermetically sealed crystal mounted on a ceramic package
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.
Ordering Information
D75A-010.0M, D75A-012.8M, D75A-019.2M or D75A-020.0M
Package Layout
0.276 ±0.006
(7.0mm)
0.079 Max.
(2.0mm)
Suggested Pad Layout
0.295
(7.49mm)
0.030
(0.76mm)
0.051
(1.28mm)
Keep Out Area
Pad Connections
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
Do Not Connect
Do Not Connect
Do Not Connect
Ground
Output
Do Not Connect
Do Not Connect
Tri-State Enable / Disable
Supply Voltage Vcc
N/C
D75A 1144
12.8 MHZ
Pin 1
0.197
±0.006
(5.0mm)
8
0.037
(0.94mm)
7
6
5
9
Top View
10
1
2
3
0.025(6 Places)
(0.635mm)
1
0.030
(0.762mm)
(4 Places)
2
3
4
10
Bottom
View
0.040
(1.02mm)
(6 Places)
0.215
(5.46mm)
4
0.051
(1.28mm)
0.100
(2.54mm)
9
8
0.038
(0.965mm)
(4 Places)
7
6
5
0.100
(2.54mm)
Dimensional Tolerance:
±.005 (.127mm)
±.02 (.508mm)
* 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.
Output Waveform
Design Recommendations
Vcc, should have
a large copper
area for reduced
inductance.
Connect a 0.01uF
bypass capacitor
<0.1”(2.54mm)
from the pad.
8
9
6
5
0.010”(0.254mm)
Recommended
clearance
inductance
for internal
copper flood.
Ground,
should have
a large copper
area for reduced
inductance.
Vcc
50 Ohm trace
<1”by design
1V/Div
Buffer
Ground
Top View
Ground
10
1
3
4
Top View
Test Circuit
DNC
DNC DNC
1
N/C
10
2
3
4
Ground
Vcc
Supply
Voltage
9
8
7
6
5
Output
OSC
TOP LAYER
GROUND LAYER
50 Ohm Trace
Without Output
Vias
Buffer
.......
BOTTOM LAYER
15 pF
0.1 uF
Bypass
10 nF
Bypass
Enable/ DNC DNC
Disable
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 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 20 ppb per pF load difference
.
DNC = Do Not Connect
Bulletin
Page
Revision
Date
Specifications subject to change without notification. See Connor-Winfield's website for latest revision. All dimensions in inches.
© Copyright 2014 The Connor-Winfield Corporation Not intended for life support applications.
Tx236
2 of 3
03
09 Jan 2014
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