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
SK-A29B0
Series
Size, mm
20 x 13
I/O
8 pin (14 pin) SMD Gull Wing
Supply Voltage
3.3V / 2.5V
Features
High Reliability - NEL HALT/HASS
qualified for crystal oscillator start-up
conditions
Low jitter - Wavecrest jitter characterization
available
Wide frequency range--350.0 MHz to
1.7 GHz
User specified tolerance available
Case at electrical ground
Will withstand SMD reflow temperatures of
253C for 4 minutes maximum
All metal, resistance weld, hermetically
sealed package
High shock resistance, to 1500g
High Q Crystal actively tuned oscillator
circuit
Power supply decoupling internal
High frequencies due to proprietary design
RoHS complaint, lead free construction
Differential Positive ECL (DPECL)
SK-A29B0 Series
Rev D
Frequency Range: 350.0 MHz to 1.7 GHz
Package Code
HK
Leaded 8 pin (14 pin)
SK
8 pin (14 pin) SMD Gull Wing
Input Voltage
Code
Specification
A
3.3 V
B
2.5 V
Drawing Specifications
Description
The SK-A29B0 Series
of quartz crystal oscillators provide DPECL Fast Edge compatible
signals. This device is to operate using positive voltage and uses multiple ground pins for
improved signal integrity. This device is intended to operate on positive voltage for PECL
applications.
Creating a Part Number
SK - A29BX - FREQ
Tolerance/Performance
0 100 ppm 0-70C
1 50 ppm 0-70C
7 25 ppm 0-70C
9 Customer Specific
A 20 ppm 0-70C
B 50 ppm -40 to +85C
C 100 ppm -40 to +85C
Electrical Connections
Pin
Connection
1
V
CC
2
V
EE
Case
6
V
EE
Case
7
Output
8
/Output
9
V
EE
Case
13
V
EE
Case
14
Enable/Disable
All other pins are no connect
Dimension shown in inches and (mm).
For the most up to date
specifications on each NEL
product, log on to our
website--www.nelfc.com
B9
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Symbol
Conditions
Min
Typical
Max
Frequency
--
--
350.0 MHz
--
1.7 GHz
Duty Cycle
--
@50% points
45/55%
--
55/45%
Logic 0
(1)
V
OL
--
V
CC
-1.810 V
--
V
CC
-1.620 V
Logic 1
(1)
V
OH
--
V
CC
-1.025 V
--
V
CC
-0.880 V
Rise & Fall Time
tr, tf 20-80% V
O
with 50 ohm load to V
CC
-2V
--
350 psec
600 psec
Jitter, RMS
(4)
--
--
--
0.3 psec
0.5 psec
Enable Voltage
(2)
--
with V
EE
= 0V
0 V
--
1.0 V
Disable Voltage
--
with V
EE
= 0V
3.0 V
--
V
CC
Frequency Stability
(3)
dF/F
Overall conditions including:
-100 ppm
--
+100 ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
General Characteristics
Parameter
Symbol
Conditions
Min
Typical
Max
Supply Voltage
V
CC
3.3V5%
3.135 V
3.3 V
3.465 V
Supply Current
I
CC
50 ohm termination
0.0 mA
--
160 mA
To 2.00V below V
CC
Output Current
I
O
Low level Output Current
0.0 mA
--
50.0 mA
Operating Temperature
T
A
--
0C
--
70C
Storage Temperature
T
S
--
-55C
--
125C
Input: Logic High (ECL) - Disables
V
EE
or Open - Enables
Lead Temperature
T
L
Soldering, 10 sec.
--
--
300C
Load 50 ohm to V
CC
-2V or Thevenin Equivalent, Bias Required
Start-up Time
t
S
--
--
2 ms
10 ms
Environmental and Mechanical Characteristics
Mechanical Shock
Per MIL-STD-202, Method 213, Condition E
Thermal Shock
Per MIL-STD-833, Method 1011, Condition A
Vibration
0.060" double amplitude 10 Hz to 55 Hz, 35g's 55 Hz to 2000 Hz
Soldering Condition
300C for 10 seconds
Hermetic Seal
Leak rate less than 1 x 10
-8
atm.cc/sec of helium
Footnotes:
1) V
OL
, V
OH
, referenced to ground.
2) Open to Enable pin also enables the output.
3) Standard frequency stability (others available).
4) Jitter performance is frequency dependent. Please contact factory for full Aeroflex characterization.
RMS jitter bandwidth of 12kHz to 20MHz.
Differential Positive ECL (DPECL)
SK-A29B0 Series
Rev D
Frequency Range: 350.0 MHz to 1.7 GHz
Test Circuit
Test Circuit uses a split supply of
+2V and -1.3V for ease of testing.
1
7
8
2,6,9,13
B10
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