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E2747 Datasheet

STRATUM 3 TCXO

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E2747/E2747LF STRATUM 3 TCXO (-20 to 70°C)
ISSUE 4 ; 13 JUNE 2005
Nominal Frequency, Fo
12.8MHz
Supply Voltage
3.3V ±5%
Input Current
< 4mA
Output
Type: HCMOS
Load: 15pF max
VoL: <0.1 Vs
VoH: >0.9 Vs
Duty Cycle @ 50%: 45% to 55%
Rise Time, 10% to 90%: < 9ns
Fall Time, 90% to 10%: < 9ns
Holdover Stability [±(Fmax-Fmin)/2Fo]
Temperature, –20 to 70°C: <±0.28ppm
Temperature, –20 to 70°C, inclusive of
Supply Voltage, 3.3V±5% and Ageing, 24 hours:
<±0.32ppm
Free-Run Accuracy, incl.
Calibration@25°C, Temperature –20 to 70°C, Supply
Voltage 3.3V±5% Load 15pF±5%, Reflow Soldering and
Ageing 20 years: < ±4.6ppm ref. to Nominal Frequency
Phase Noise
10Hz
< -90dBc/Hz
100Hz < -115dBc/Hz
1kHz
< -127dBc/Hz
10kHz < -137dBc/Hz
> 100kHz < -143dBc/Hz
Tri-State
Pad 8 open circuit or > 0.6Vs: Output Enabled
Pad 8 < 0.2Vs: Output in Tri-state mode
In Tri-state mode, the output stage is disabled but the
oscillator and compensation circuit are still active
(current consumption < 1mA)
Environmental Specification
Storage Temperature Range: -55 to 125°C
Vibration: IEC 60068-2-6 Test Fc procedure B4, 10-60Hz
1.5mm displacement, at 98.1m/s2, 30 minutes in each of
three mutually perpendicular axes at 1 octave per minute
Shock: IEC 60068-2-27 Test Ea, 980m/s2 acceleration for
6ms duration, 3 shocks in each direction along three
mutually perpendicular axes
Europe Tel: +44 (0)1460 270200
Americas Tel: +1 919 941 9333
Asia Tel: +86 755 8826 5991
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
Solderability: MIL-STD-202, Method 208, Category 3
Resistance to Soldering Heat: 260°C / 10s exposure
Marking: Laser Marked
RoHS/Soldering: Parts with the suffix ‘LF’ on the part
number are fully compliant with the European Union
directive 2002/95/EC on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment.
Note:The RoHS compliant parts are suitable for assembly
using both Lead-free solders (see Lead-free Reflow
soldering profile) and Tin / Lead solders (see Tin / Lead
Reflow soldering profile).
Marking
Manufacturers ID (CMAC)
Manufacturing Identifier (xx)
Pad 1 / Static Sensitivity Identifier ()
Abbreviated Part Number (2747)
Oscillator’s Date of Manufacture (YW)
CMAC xx
Note: Production parts will be
marked in this format. Sample
2747 YW
marking may vary
Outline in mm
7.0±0.15
1.0
1.27
59
678
3 21
4 10
0.6
Pad Connections
1.Do not connect
2.N/C
3.DC Coupled Output
(do not connect)
4.GND
5.Output
6.N/C
7.N/C
8.Tri-state Control *
9. +Vs
10.Do not connect,
or connect to GND
* see text
Website: www.cmac.com
C-MAC
C-MAC



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