NEL SDB2927, SDB2929, SDB292A, SDB292B, SDB292C Datasheet
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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)
Fast Edge
SD-B2920 Series
PRELIMINARY
Description
The SD-B2920 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– 100.0 to 125.0MHz
(Consult factory for complete frequency range)
• User specified tolerance available
• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum
• Space-saving alternative to discrete component
oscillators
• High shock resistance, to 1000g
• Metal lid electrically connected to ground to
reduce EMI
• 2.5 volt operation
• Fast rise and fall times <600 ps
• 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
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
• Gold plated pads
Electrical
Connection
Pin Connection
1 Enable/Disable
2 N.C.
3 V
EE
/Ground
4 Output
5 /Output
6 V
CC
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0134A
Rev. F
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
SD-B2920 Series Continued
Differential Positive ECL (DPECL) Fast Edge
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol Conditions Min Typical Max
Frequency
(6)
----- ----- 100.000MHz ----- 125.0MHz
Duty Cycle ----- @ VCC-1.29V 45/55% ----- 55/45%
Logic 0
(2)
VOL ----- VCC-1.95V ----- VCC-1.60V
Logic 1
(2)
VOH ----- VCC-1.02V ----- VCC-0.74V
Rise & Fall Time tr,tf 20-80%VO with 50 ohm load to VCC-2V ----- ----- 600 psec
T
pd
(4)
----- ----- -200 psec ----- +200 psec
Jitter, RMS
(3)
----- ----- ----- ----- 3 psec
Enable Voltage
(5)
----- with VEE = 0V VCC -0.4V ----- ----Disable Voltage ----- with VEE = 0V ----- ----- 0.4V
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 VCC ----- 2.375V 2.5V 2.625V
Supply Current ICC 50 ohm termination 0.0 mA ----- 80 mA
To 2.00V below V
CC
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
Power Dissipation P
D
----- ----- ----- 210 mW
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load 50 Ohm to VCC-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 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 (VEE) with VCC = 2.5V
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
4) Tpd is phse shift between the falling edge of pin 4 at 2.0V and the rising edge of pin 5 at 2.01V.
5) Open to enable pin also enables the output.
6) Consult factory for complete frequency range.
Rev. F
CRYSTAL CLOCK OSCILLATORS
SD - B292X - FREQ
Package Code
Tolerance/Performance
SD 6 pad 5x7mm SMD 0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
7 ±25ppm 0-70°C
Input Voltage
9 Customer Specific
Code Specification A ±20ppm 0-70°C
A 3.3V B ±50ppm -40 to +85°C
B 2.5V C ±100ppm -40 to +85°C
5V
Creating a Part Number
Data Sheet 0134A
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