NEL PJ-B2980 DATA SHEET

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CRYSTAL CLOCK OSCILLATORS

Data Sheet 0350C

Rev. G

Differential Positive ECL (DPECL)
Fast Edge

PJ-B2980 Series

Description

The PJ-B2980 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–60.0MHz to 312.5MHz

• User specified tolerance available

• Space-saving alternative to discrete component
oscillators

• High shock resistance, to 1000g

• 2.5 volt operation

• 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 pads

• RoHS Compliant, Lead Free Construction

Electrical Connection

Pin Connection

1 Enable/Disable
2 N.C.
3 V
4 Output
5 /Output
6 V

/Ground

EE

CC

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone [phone] FAX [phone]

Email: [e-mail]

www.nelfc.com

CRYSTAL CLOCK OSCILLATORS

Data Sheet 0350C

PJ-B2980 Series Continued

Rev. G

Differential Positive ECL (DPECL) Fast Edge

Operating Conditions and Output Characteristics

Electrical Characteristics

Parameter Symbol Conditions Min Typical Max

Frequency ----- ----- 60.0MHz ----- 312.5MHz
Duty Cycle ----- @ VCC-1.29V 45/55% ----- 55/45%
Logic 0
Logic 1
Rise & Fall Time tr,tf 20-80%VO with 50 ohm load to VCC-2V ----- ----- 1 ns
T
Jitter, RMS
Enable Voltage
Disable Voltage ----- with VEE = 0V ----- ----- 0.4V
Frequency Stability

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

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
Solder temperature TL 4 minutes ----- ----- 253°C
Load 50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
Start-up time t

(2)

(2)

(4)

pd

(3)

(5)

VOL ----- ----- ----- VCC -1.62V
VOH ----- VCC -1.025V ----- -----

----- ----- -200 psec ----- +200 psec

----- ----- ----- ----- 1 psec

----- with VEE = 0V 1.6V ----- -----

(1)

dF/F Overall conditions including: -100ppm ----- +100ppm

voltage, calibration, temp.,
10 yr aging, shock, vibration

To 2.00V below V

D

S

----- ----- ----- 210 mW

----- ----- 2 ms 10 ms

CC

Environmental and Mechanical Characteristics

Mechanical Shock Per MIL-STD-202, Method 213, Condition E
Thermal Shock Per MIL-STD-883, Method 1011, Condition A
Vibration 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz
Hermetic Seal Leak rate less than 1 x 10

Footnotes:

1) Standard frequency stability (±20,±25,±50ppm & others available)

2) V

, VOH, referenced to ground (VEE) with VCC = 2.5V

OL

3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
RMS jitter bandwidth of 12kHz to 20MHz.

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) Internal high frequency power source decoupling.

Creating a Part Number

PJ - B298X - FREQ

Package Code

PJ 6 J Lead SMD 0 ±100ppm 0-70°C
1 ±50ppm 0-70°C

Input Voltage

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

-8

atm.cc/sec of helium

Tolerance/Performance

7 ±25ppm 0-70°C
9 Customer Specific

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone [phone] FAX [phone]

Email: [e-mail]

www.nelfc.com