NEL SK-2910 User Manual
查询HK-2910供应商
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0012G
Rev. C
Differential Positive ECL (DPECL)
SK-2910 Series
Description
The SK-2910 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 range–122.0MHz to 300.0MHz
• User specified tolerance available
• Case at electrical ground
• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum
• All metal, resistance weld, hermetically sealed
package
• High shock resistance, to 1500g
• Low Jitter
• 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
2 VEE Case
6 V
7 Output
8 /Output
9 V
13 V
14 Enable/Disable
CC
Case
EE
Case
EE
Case
EE
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 0012G
SK-2910 Series Continued
Rev. C
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol Conditions Min Typical Max
Frequency ----- ----- 122.0MHz ----- 300.0MHz
Duty Cycle ----- @ 50% points 45/55% ----- 55/45%
Logic 0
Logic 1
Rise & Fall Time tr,tf 20-80%VO with 50 ohm load to VCC-2V ----- 350 psec 600 psec
Jitter, RMS
Enable Voltage
Disable Voltage ----- with VEE=0V 3.0V ----- VCC
Frequency Stability
General Characteristics
Parameter Symbol Conditions Min Typical Max
Supply Voltage VCC ----- 4.75V 5.0V 5.25V
Supply Current ICC 50 ohm termination 0.0 mA ----- 120 mA
Output current IO Low level Output Current 0.0 mA ----- ±50.0 mA
Operating temperature TA ------ 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Input: Logic High (ECL) - Disables
VEE or Open - Enables
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load 50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
Start-up time t
(2)
(2)
(3)
(4)
---- with VEE=0V 0V ----- 1.0V
VOL ----- VCC-1.95V ----- VCC-1.60V
VOH ----- VCC-1.02V ----- VCC-0.74V
----- ----- ----- ----- 5 psec
(1)
dF/F Overall conditions including: -100ppm ----- +100ppm
S
voltage, calibration, temp.,
10 yr aging, shock, vibration
To 2.00V below V
----- ----- 2 ms 10 ms
CC
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 300°C 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) VOL, VOH, referenced to ground
3) Jitter performance is frequency dependent. Please contact factory for full characterization.
4) Open to Enable pin also enables to output.
Creating a Part Number
SK - A291X - FREQ
Package Code
HK Leaded 8 pin (14pin) 0 ±100ppm 0-70°C
SK 8 pin (14 pin) SMD Gull 1 ±50ppm 0-70°C
Wing 7 ±25ppm 0-70°C
Input Voltage
Code Specification A ±20ppm 0-70°C
A 3.3V B ±50ppm -40 to +85°C
5V C ±100ppm -40 to +85°C
Tolerance/Performance
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
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