Data Sheet

EURO QUARTZ
EMF576P Series PECL TCXO
PECL 7 x 5 x 2.8mm SMD, 'F' Group Specification
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
EMF576P - OUTLINES AND DIMENSIONS
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:
VOH = 2.275V (min.)
VDD = -1.025V (min.)
Logic Low:
VOL = 1.680V (max.)
VDD = -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 VDD -2.0 Volts
Storage Temperature:
-55° to +125°C
Phase Jitter (RMS) (12kHz to 20MHz): 0.4ps typ., 0.5ps max
VEMF576P VOLTAGE CONTROL SPECIFICATION
Control Voltage:
Frequency Deviation:
Slope Polarity:
Linearity:
SSB PHASE NOISE at 25°C
Offset
Part =
EMF576P33
ENABLE/DISABLE FUNCTION
Pad 2 not connected:
Disable:
Enable:
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.
Temp.
Range (°C)
P
±1.0
±2.0
±2.5
10Hz
100Hz
1kHz
10kHz
100kHz
at 155.520MHz
(dBc/Hz)
-62
-92
-120
-132
-128
at 311.020MHz
(dBc/Hz)
-59
-86
-116
-129
-124
PERIOD JITTER
Frequency (MHz)
38.880
77.760
155.520
RMS (typ.)
2.5ps
2.5ps
3.0ps
3.0ps
Peak to Peak
20.0ps
18.0ps
20.0ps
25.0ps
622.080
PART NUMBERING SCHEDULE
FREQUENCY STABILITY OVER TEMPERATURE
Stability (ppm)
+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
±3.0
±4.0
±5.0
0 ~ +50
P
P
P
P
P
P
-10 ~ +60
ASK
P
P
P
P
P
-20 ~ +70
X
P
P
P
P
P
-30 ~ +75
X
P
P
P
P
P
-40 ~ +85
X
X
X
ASK
ASK
P
= available, x = not available, ASK = call Technical Sales
Example:
EMF576P33-204.80-2.5/-30+75
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 [email protected] www.euroquartz.co.uk
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