CRYSTAL CLOCK OSCILLATORS
Data Sheet 0629E
Rev.
A
LVDS UHF VCXO
SD-A3DBXXX Series
Description
The
SD-A3DBXXX Series
of voltage controlled crystal oscillators (VCXO) provides ultra high frequency with
LVDS complementary outputs. The outputs can be Tri-stated for test automation or combining multiple
clocks. The device is based on low noise analog harmonic multiplication for higher frequencies, and
packaged in a miniature, low profile leadless ceramic SMD package with 6 gold plated pads.
Applications and Features
• Wide frequency range – 38.0MHz to 640.000MHz
• Fiber Channel; 10 GbE; Infiniband; Network Processors; SOHO Routing
• High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions
• Low Phase Noise, Low Jitter
• High shock resistance, to 1000g
• Ultra High Frequency
• Absolute Pull Range (APR) to ±100 ppm
• Grounded lid and internal by-pass capacitor reduce EMI
• RoHS Compliant, Lead Free Construction
Creating a Part Number
SD - A 3DB X X X - FREQ
Package Code
Absolute Pull Range, ppm
SD 6 pad 5x7mm SMD
E ±20
F ±32
Input Voltage
G ±50
A
3.3V±5%
H ±100
9 Customer specific
Enable Option
H
Enable High
L
Enable Low
Temperature Range, °C
A 0 to 50
B 0 to 70
C -20 to 70
D -40 to 85
9
Customer specific
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
SD-A3DBXXX Series
LVDS UHF VCXO
Continued
Data Sheet 0629E
Rev.
A
Absolute Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Supply Voltage
Enable/Disable Voltage
Parameter
Nominal Frequency
Supply Voltage
Supply current
Output Logic Type
Load
Output Levels
Symb
Fo
Vcc
Icc
At receiving end between
the outputs
Differential amplitude
Amplitude error
Offset Voltage
Offset Voltage error
At outputs crossing, room
temperature
20 to 80, 80 to 20 %
Integrated from Phase
Noise, 12 KHz to 20 MHz ,
RMS
Random
<320 M
period,
>320 M
Accumul.,
<320 M
pk-to-pk
>320 M
Deterministic
<320 M
>320 M
<320 M
>320 M
212.5 MHz
@ 10 Hz
@100 Hz
@1 KHz
@10KHz
@100KHz
@>1MHz
Overall, including initial
calibration, temperature,
aging 10 years, shock and
vibration @ Vc=Vcc/2
Vc to set F at Fo; T, Vcc,
load - nominal, as shipped
Over all conditions, see
part # creation
@ Fmod < 100 Khz
At Vc = Vcc/2, -3dB
CMOS logic 1 or N/C
CMOS logic 0
CMOS logic 1 or N/C
CMOS logic 0
90
247
1.125
45/55
Symbol
To
Tst
Vcc
Ven/dis
Conditions, Note
Code A
Value
-40 to +85
-50 to +90
-0.5 to 4.5
0 to Vcc
MIN
38
3.135
TYP
3.3
80
LVDS
100
330
1.25
50/50
0.5
0.3
2.5
2.5
30
43
6
18
-50
-35
-65
-95
-125
-140
-145
-148
30
MAX
640
3.465
100
110
454
50
1.375
50
55/45
0.7
Unit
ºC
ºC
V
V
Unit
MHz
V
mA
Ohm
mV
mV
V
mV
%
ns
ps
ps
ps
ps
dBc
dBc/Hz
Electrical Parameters
Vod
Vof
Duty Cycle
(Symmetry)
Rise/Fall Time
Jitter
Integrated
Wavecrest
characterized
Tr/Tf
J
Sub-Harmonics
Phase Noise
£(Δf)
Frequency Stability
ΔF/F
ppm
Control Voltage Range
Setability
Absolute Pull Range
Input Impedance
Modulation Bandwidth
Enable High Option
Pin 2 Enabled
Pin 2 Disabled
Enable Low Option
Pin 2 Disabled
Pin 2 Enabled
Vc
Vcs
APR
Zin
0V
0.4 Vcc
20,32,
50,100
10
10
0.7 Vcc
0
0.7 Vcc
0
0.5 Vcc
Vcc
0.6 Vcc
V
V
ppm
KOhm
KHz
Vcc
0.3 Vcc
Vcc
0.3 Vcc
V
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
CRYSTAL CLOCK OSCILLATORS
Rev. A
SD-A3DBXXX Series
LVDS UHF VCXO
Electrical Connection
Pin
Connection
1
Vco
2
Enable
3
V
EE
4
Output
5
Output Complement
6
V
CC
Continued
Environmental and
Mechanical Characteristics
Operating temp.
range
Mechanical Shock
Thermal Shock
Vibration
Hermetic Seal
Soldering conditions
see part # table
Per MIL-STD-202, Method 213, Cond. E
Per MIL-STD-883, Method 1011, Cond. A
Per MIL-STD-883, Method 2007, Cond. A
Leak rate less than 1x10-8 atm.cc/s of helium
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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