EURO
QUARTZ
Miniature 7 x 5 x 2.8mm ceramic SMD package
Frequency range: 38.880MHz to 432.0MHz
Supply voltage 3.3 Volts
Less than 1ps phase jitter, ideal for SONET, xDSL
RoHS compliant
DESCRIPTION
EMF576P series TCXOs are packaged in a miniature 6 pad 7 x 5 x
2.8mm ceramic SMD package. With differential PECL output,
tolerances are available from ±1.0ppm over -30° to +75°C. The part
has a 0.01mF decoupling capacitor built in.
SPECIFICATION
Product Series Code
TCXO:
EMF576P
VCTCXO:
VEMF576P
Frequency Range:
38.880MHz to 432.0MHz
Output Waveform:
Differential PECL
Initial Calibration Tolerance:
<±2.0ppm at +25°±2°C
Standard Frequencies:
38.880, 40.0, 50.0, 54.0, 64.0, 65.536,
77.76, 80.0, 100.0, 128.0, 155.250,
160.0, 200.0, 204.8, 311.04, 320.0
and 409.60MHz (Partial
list)
Operating Temperature Range:
See table
Frequency Stability
(see
table)
vs. Ageing:
±1.0 ppm max. first year
vs. Voltage Change:
±0.3 ppm max. ±5% change
vs. Load Change:
±0.3 ppm max. ±10% change
vs. Reflow (SMD type):
±1.0ppm max. for one reflow
(Measured
after 24 hours)
Supply Voltage:
+3.3 Volts
Output Logic Levels
Logic High:
V
OH
= 2.275V (min.)
V
DD
= -1.025V (min.)
Logic Low:
V
OL
= 1.680V (max.)
V
DD
= -1.620V (max.)
Rise and Fall Times
<150MHz = 0.7ns max, 150 to 320MHz = 0.55ns max.
<320MHz = 0.45ns max.
Duty Cycle:
50%±5%
Start-up Time:
5ms typical, 10ms max.
Current Consumption
38.880 to 100MHz:
75mA max.
100.0 to 320MHz:
90mA max.
320 to 432.0MHz:
100mA max.
Output Load:
50W to V
DD
-2.0 Volts
Storage Temperature:
-55° to +125°C
Phase Jitter (RMS) (12kHz to 20MHz): 0.4ps typ., 0.5ps max
ENABLE/DISABLE FUNCTION
Pad 2 not connected:
Disable:
PECL and differential PECL outputs enabled.
Referenced to Ground (threshold) Oscillator
is always on, buffer stage is disabled.
Disable current: 50mA max. (at 0.0V),
disable time 10ns max.
Pad 2 >0.45VCC Ground (threshold) Enable
time 10ns plus one period of output freq.
PERIOD JITTER
EMF576P Series TCXO
PECL 7 x 5 x 2.8mm SMD, 'F' Group
EMF576P - OUTLINES AND DIMENSIONS
VEMF576P VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Frequency Deviation:
Slope Polarity:
Linearity:
+1.5±1.0Volts
±6.0 ppm min. with Vcon = +1.5±1.0V
Positive
(increase of control voltage increases
output frequency.)
6% typical, 10% maximum
SSB PHASE NOISE at 25°C
Offset
Part =
EMF576P33
at 155.520MHz
(dBc/Hz)
at 311.020MHz
(dBc/Hz)
10Hz
-62
-59
100Hz
-92
-86
1kHz
-120
-116
10kHz
-132
-129
100kHz
-128
-124
Frequency (MHz)
RMS (typ.)
Peak to Peak
38.880
2.5ps
20.0ps
77.760
2.5ps
18.0ps
155.520
3.0ps
20.0ps
622.080
3.0ps
25.0ps
Enable:
FREQUENCY STABILITY OVER TEMPERATURE
Stability (ppm)
0 ~ +50
-10 ~ +60
Temp.
Range (°C)
-20 ~ +70
-30 ~ +75
-40 ~ +85
P
±1.0
P
ASK
X
X
X
±2.0
P
P
P
P
X
±2.5
P
P
P
P
X
±3.0
P
P
P
P
ASK
±4.0
P
P
P
P
ASK
±5.0
P
P
P
P
P
PART NUMBERING SCHEDULE
Example:
EMF576P33-204.80-2.5/-30+75
= available, x = not available, ASK = call Technical Sales
Series Description
TCXO = EMF576P
VCTCXO = VEMF576P
Supply Voltage
33 = 3.3 VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR) (°C)
Lower and upper limits
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk
www.euroquartz.co.uk
Industrial Control Electronics
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