LVDS HF VCXO
SU-A3DCXXX Series
Description
The SU-A3DCXXX Series of voltage controlled crystal oscillators (VCXO) provides high frequency with
LVDS complementary outputs. The outputs can be disabled for test automation or combining multiple clocks.
The device does not use any frequency multiplication, providing exceptionally low Phase Noise and Jitter. It
is packaged in a miniature, FR-4 based 9x14mm SMD package.
Applications and Features
Wide frequency range 12.0MHz to 280.000MHz
Fiber Channel; 10 GbE; Infiniband; Network Processors; SONET/SDH
High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions
Extremely Low Phase Noise and Jitter
High shock resistance, to 1000g
No Multiplication
Absolute Pull Range (APR) to 100 ppm
SONET 20 ppm overall free-run stability available
RoHS Compliant, Lead Free Construction
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email:
nelsales@nelfc.com
www.nelfc.com
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0629H
Rev. B
SU - A 3DC X X X - FREQ
Package Code
Absolute Pull Range, ppm
SU 6 pad 9x14 mm SMD
E 20
F 32
Input Voltage
G 50
A 3.3V5%
H 100
9 Customer specific
Enable Option
Temperature Range, C
H
Positive CMOS level
A 0 to 50
N
N/A
B 0 to 70
C -20 to 70
D -40 to 85
9 Customer specific
Creating a Part Number
SU-A3DCXXX Series
Continued
LVDS HF VCXO
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Operating Temperature Range
To
-40 to +85
C
Storage Temperature Range
Tst
-50 to +90
C
Supply Voltage
Vcc
-0.5 to 4.5
V
Enable/Disable Voltage
Ven/dis
0 to Vcc
V
Electrical Parameters
Parameter
Symb
Conditions, Note
MIN
TYP
MAX
Unit
Nominal Frequency
Fo
12
280
MHz
Supply Voltage
Vcc
Code A
3.135
3.3
3.465
V
Supply current
Icc
80
100
mA
Output Logic Type
LVDS
Load
At receiving end between
the outputs
90
100
110
Ohm
Output Levels
Vod
Differential amplitude
247
330
454
mV
Amplitude error
50
mV
Vof
Offset Voltage
1.125
1.25
1.375
V
Offset Voltage error
50
mV
Duty Cycle
(Symmetry)
At outputs crossing, room
temperature
45/55
50/50
55/45
%
Rise/Fall Time
Tr/Tf
20 to 80, 80 to 20 %
0.5
0.7
ns
Jitter
Integrated
J
Integrated from Phase
Noise, 12 KHz to 20 MHz ,
RMS
0.1
0.2
ps
100 Hz to 80 KHz, RMS
1.0
ps
50 Khz to 80 Mhz
0.3
ps
Wavecrest
characterized
Random
period,
2.5
ps
Accumul.,
pk-to-pk
17
ps
Deterministic
0
ps
Sub-Harmonics
None
dBc
Phase Noise
(f)
155.52 MHz,
APR 50ppm
or less
@ 10 Hz
@100 Hz
@1 KHz
@10KHz
@100KHz
@>1MHz
-75
-105
-128
-142
-147
-147
-70
-100
-125
-140
-145
-145
dBc/Hz
Frequency Stability
F/F
Overall, including initial
calibration, temperature,
aging 10 years, shock and
vibration @ Vc=Vcc/2;
APR 50ppm, or less
20
30
ppm
Control Voltage Range
Vc
0V
Vcc
V
Setability
Vcs
Vc to set F at Fo; T, Vcc,
load - nominal, as shipped
0.4 Vcc
0.5 Vcc
0.6 Vcc
V
Absolute Pull Range
APR
Over all conditions, see
part # creation
20,32,
50,100
ppm
Input Impedance
Zin
@ Fmod < 100 Khz
50
KOhm
Modulation Bandwidth
At Vc = Vcc/2, -3dB
20
KHz
Enable/Disable Option
Pin 2 Enabled
Pin 2 Disabled
CMOS logic 1 or N/C
CMOS logic 0
0.7 Vcc
0
Vcc
0.3 Vcc
V
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email:
nelsales@nelfc.com
www.nelfc.com
Rev. B
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0629H
Rev. B
CRYSTAL CLOCK OSCILLATORS
SU-A3DCXXX Series
Continued
LVDS HF VCXO
Electrical Connection
Pin Connection
1 Vco
2 Enable/Disable
3 Gnd
4 Output
5 Output Complement
6 V
CC
Environmental and Mechanical Characteristics
Operating temp.
range
see part # table
Mechanical Shock
Per MIL-STD-202, Method 213, Cond. E
Thermal Shock
Per MIL-STD-883, Method 1011, Cond. A
Vibration
Per MIL-STD-883, Method 2007, Cond. A
Hermetic Seal
Leak rate less than 1x10-8 atm.cc/s of helium
Soldering conditions
See MAX reflow profile below
Maximum Reflow Profile
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
Email:
nelsales@nelfc.com
www.nelfc.com
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