NEL PJ2940, PJ2941, PJ2947, PJ2949, PJ294A 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
PJ-A2940 Series
Preliminary
Description
The PJ-A2940 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–80.0MHz to 200.0MHz
• 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 3000g
• 3.3 volt operation
• Fast rise and fall times <600 ps
• Metal lid electrically connected to ground to
reduce EMI
• High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions
• Low Jitter - Wavecrest jitter characterization
available
• 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 leads - Solder dipped leads available
upon request
Electrical Connection
Pin Connection
1 Enable/Disable
2 NC
3 V
EE
4 Output
5 Output
Complement
6 V
CC
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0149B
Rev. E
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
PJ-A2940 Series Continued
Differential Positive ECL (DPECL) Fast Edge
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol Conditions Min Typical Max
Frequency ----- ----- 80.0MHz ----- 200.0MHz
Duty Cycle ----- @ VCC-1.29V 45/55% ----- 55/45%
Logic 0
(2)
VOL ----- 1.35V ----- 1.70V
Logic 1
(2)
VOH ----- 2.28V ----- 2.56V
Rise & Fall Time tr,tf 20-80%VO with 50 ohm load to VCC-2V ----- ----- 600 psec
Tpd
(4)
----- ----- -200 psec ----- +200 psec
Jitter, RMS
(3)
----- ----- ----- ----- 3 psec
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 ----- 3.15V 3.3V 3.45V
Supply Current ICC 50 ohm termination 0.0 mA ----- 110 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
----- ----- ----- 276 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
Footnotes:
1) Standard frequency stability (±20,±25,±50ppm & others available)
2) VOL, VOH, referenced to ground (VEE) with VCC = 3.3V
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
4) Tpd is phase shift between the falling edge of pin 3 at 2.0V and the rising edge of pin 1 at 2.01V.
Rev. E
CRYSTAL CLOCK OSCILLATORS
PJ - A294X - FREQ
Package Code
Tolerance/Performance
PJ 6 J Lead 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
5V C ±100ppm -40 to +85°C
Creating a Part Number
Data Sheet 0149B
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