Application Specific Voltage Controlled
Crystal Oscillator 7.0 x 5.0mm
ASSP VCXO
3.3V PECL 156.25MHz Ethernet VCXO
PRETHE156
7.0 x 5.0mm Ceramic SMD
ASSP VCXO™
for Ethernet
Package:
(Scale: none, Dimensions are in mm)
Product Features
• Very low Pk to Pk jitter - 40ps Max
•
Low supply current - 70mA Max
•
Low power standby mode
•
RoHS Compliant
Recommended Land Pattern:
Product Description
This is an enhanced 3.3V, 156.25MHz
with superb jitter and low operating current
for providing clock references in ethernet
applications.
CREATED USING CADSTD LITE FREEWARE FROM WWW.CADSTD.COM. NON-COMMERCIAL USE ONLY.
Pin Functions:
Pin
Function
1
Control Voltage
Enable/Disable
Ground
Output
Output
V
CC
Applications
•
Ethernet
2
3
4
5
6
CREATED USING CADSTD LITE FREEWARE FROM WWW.CADSTD.COM. NON-COMMERCIAL USE ONLY.
*Extended high frequency power decoupling is recommended (see test circuit for minimum
recommendation). To ensure optimal performance, do not route RF traces beneath the
package.
Part Ordering Information:
PRETHE156
SaRonix-eCera™ is a Pericom® Semiconductor company
•
US: +1-408-435-0800 TW: +886-3-4518888
12-0053
•
www.pericom.com
07/13/12
1
All specifications are subject to change without notice.
PRETHE156
Rev B
3.3V PECL 156.25MHz Ethernet VCXO
PRETHE156
Application Specific Voltage Controlled
Crystal Oscillator 7.0 x 5.0mm
Electrical Performance
Parameter
Output Frequency
Supply Voltage
V
CC
Supply Current, Output Enabled
Frequency Stability
Operating Temperature Range
Output Logic 0, V
OL
Output Logic 1, V
OH
Output Load
Duty Cycle
Rise and Fall Time
Jitter, Phase RMS(1-s)
Jitter, Peak to Peak (Pk-Pk)
Phase Noise
Phase Noise
Phase Noise
Phase Noise
Phase Noise
-50
-85
-115
-130
-140
45
-40
3.135
Min.
Typ.
156.250
3.3
3.465
70
±42
+85
Max.
Units
MHz
V
mA
ppm
°C
V
V
50
55
0.8
1
40
ohms
%
ns
ps
ps
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
From outputs
V
CC
- 2V
DC
Measured 50%
V
CC
Measured 20/80% of waveform
12kHz~20MHz Frequency Band
100.000 Random Periods
at 10Hz offset
at 100Hz offset
at 1kHz offset
at 10kHz offset
at 100kHz offset
See Note 1 below
Notes
ASSP VCXO
V
CC
- 1.62
V
CC
- 1.025
Notes:
1.
Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration tolerance (25°C),
aging (5 year at +40°C average effective ambient temperature), shock and vibration.
2. For specifications other than those listed, please contact sales.
Voltage Control Function
Parameter
Absolute Pull Range (APR)
Control Voltage Range
Center Control Voltage
Monotonic Linearity
Input Impedance
1.
Min.
±50
0.3
Typ.
Max.
3.0
Units
ppm
V
V
%
kΩ
See 1 below
As rated
Notes
1.65
10
130
For RMT Nominal Frequency
Positive Transfer Slope
Control Voltage Pin
APR is relative to the nominal output frequency; APR is inclusive of frequency deviation due to stability.
Output Enable / Disable Function
Parameter
Input Voltage (pin 2), Output Enable
Input Voltage (pin 2), Output Disable (low power standby)
Min.
Typ.
Max.
Units
V
V
Notes
or open
Output is Hi-Z
V
OH
V
OL
Absolute Maximum Ratings
Parameter
Storage Temperature
Min.
-55
Typ.
Max.
+125
Units
°C
Notes
For the latest product information visit:
http://www.pericom.com/products/crystals-and-crystal-oscillators/assp-xo/?part=PRETHE156
For test circuit go to:
http://www.pericom.com/pdf/sre/tc_vc_pecl.pdf
For soldering reflow profile and reliability test ratings go to:
http://www.pericom.com/pdf/sre/reflow.pdf
For tape and reel information go to:
http://www.pericom.com/pdf/sre/tr_7050_xo.pd
SaRonix-eCera™ is a Pericom® Semiconductor company
•
US: +1-408-435-0800 TW: +886-3-4518888
12-0053
•
www.pericom.com
07/13/12
2
All specifications are subject to change without notice.
PRETHE156
Rev B
无线连接
京公网安备 11010802033920号
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