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
Differential Positive ECL (DPECL)
HK-A2900 Series
Description
The HK-A2900 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.
Features
Wide frequency range320.0MHz to 550.0MHz
User specified tolerance available
Case at electrical ground
Will withstand vapor phase temperatures of 253C
for 4 minutes maximum
All metal, resistance weld, hermetically sealed
package
High shock resistance, to 1500g
Low Jitter - Wavecrest jitter characterization
available
High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions
Overtone technology
High Q Crystal actively tuned oscillator circuit
Power supply decoupling internal
Dual ground plane for added stability
No internal PLL avoids cascading PLL problems
High frequencies due to proprietary design
Electrical Connection
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
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0317A
Rev. -
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
HK-A2900 Series Continued
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Symbol
Conditions
Min
Typical
Max
Frequency
-----
-----
320.0MHz -----
550.0MHz
Duty Cycle -----
@ 50% points 45/55% -----
55/45%
Logic 0
(2)
V
OL
-----
V
CC
-1.95V -----
V
CC
-1.60V
Logic 1
(2)
V
OH
-----
V
CC
-1.02V -----
V
CC
-0.74V
Rise & Fall Time
tr,tf 20-80%V
O
with 50 ohm load to V
CC
-2V ----- 350 psec
600 psec
Jitter, RMS
(3)
-----
-----
-----
-----
3 psec
Enable Voltage
(4)
----
with V
EE
=0V
0V
-----
1.0V
Disable Voltage
-----
with V
EE
=0V
3.0V
-----
V
CC
Frequency Stability
(1)
dF/F
Overall conditions including:
-100ppm
-----
+100ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
General Characteristics
Parameter
Symbol
Conditions
Min
Typical
Max
Supply Voltage
V
CC
-----
3.135V 3.3V
3.465V
Supply Current
I
CC
50 ohm termination
0.0 mA
-----
120 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 55Hz 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) Standard frequency stability (20,25,50ppm & others available)
2) V
OL
, V
OH
, referenced to ground
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
4) Open to Enable pin also enables the output.
Rev. -
CRYSTAL CLOCK OSCILLATORS
HK - A290X - FREQ
Package Code
Tolerance/Performance
HK Leaded 8 pin (14pin)
0 100ppm 0-70C
SK 8 pin (14 pin) SMD Gull
1 50ppm 0-70C
Wing
7 25ppm 0-70C
Input Voltage
9 Customer Specific
Code Specification
A 20ppm 0-70C
A 3.3V
B 50ppm -40 to +85C
5V
C 100ppm -40 to +85C
Creating a Part Number
Data Sheet 0317A
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