SDB2990 NEL Frequency Controls Inc., SDB2990 Datasheet
SDB2990
Manufacturer Part Number
SDB2990
Description
Surface Mount 6 Pad 5x7mm Frequency Range (Mhz) : 125.0 - 312.5 Output/input : Fast Edge Differential, 2.5V
Manufacturer
NEL Frequency Controls Inc.
Datasheet
1.SDB2990.pdf
(2 pages)
Description
The SD-B2990 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. Systems
designers may now specify space-saving, cost-effective packaged PECL oscillators to meet their timing
requirements.
Features
• Wide frequency range–125.0MHz to 312.5MHz
• User specified tolerance available
• Will withstand vapor phase temperatures of 253°C
• Space-saving alternative to discrete component
• High shock resistance, to 1000g
• 2.5 volt operation
• Metal lid electrically connected to ground to
• Fast rise and fall times <600 ps
Electrical Connection
Pin
1
2
3
4
5
6
oscillators
reduce EMI
for 4 minutes maximum
Enable/Disable
/Output
N.C.
V
Output
V
Connection
EE
CC
/Ground
CRYSTAL CLOCK OSCILLATORS
Differential Positive ECL (DPECL)
Fast Edge
SD-B2990 Series
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881
PRELIMINARY
• High Reliability - NEL HALT/HASS qualified for
• Low Jitter - Wavecrest jitter characterization
• Overtone technology
• High Q Crystal actively tuned oscillator circuit
• Power supply decoupling internal
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
• Gold plated pads
crystal oscillator start-up conditions
available
Email:
Data Sheet 0332A
nelsales@nelfc.com
Rev. -
www.nelfc.com
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SDB2990 Summary of contents
Page 1
CRYSTAL CLOCK OSCILLATORS Differential Positive ECL (DPECL) Fast Edge SD-B2990 Series Description The SD-B2990 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. Systems designers may now specify space-saving, cost-effective packaged PECL oscillators to meet their timing requirements. ...
Page 2
CRYSTAL CLOCK OSCILLATORS Continued SD-B2990 Series Differential Positive ECL (DPECL) Fast Edge Operating Conditions and Output Characteristics Electrical Characteristics Parameter Symbol Frequency ----- Duty Cycle ----- Logic 0 ( (2) Logic Rise & Fall Time ...