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PJ-A298A-310.0中文资料

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881

Email: nelsales@https://www.wendangku.net/doc/20551530.html,

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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

3 V EE 6 V CC

CRYSTAL CLOCK OSCILLATORS

Data Sheet 0350C

Rev. G

Email: nelsales@https://www.wendangku.net/doc/20551530.html, https://www.wendangku.net/doc/20551530.html,

PJ-B2980 Series Continued

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 ----- @ V CC -1.29V 45/55% -----55/45%Logic 0 (2)V OL ----- ----- -----V CC -1.62V Logic 1(2)

V OH ----- V CC -1.025V -----

-----Rise & Fall Time tr,tf 20-80%V O with 50 ohm load to V CC -2V ----- ----- 1 ns

T pd (4)

-----------200 psec -----+200 psec Jitter, RMS (3)

-------------------- 1 psec Enable Voltage (5)-----with V EE = 0V 1.6V ----------Disable Voltage

-----with V EE = 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 V CC ----- 2.375V 2.5V 2.625V Supply Current I CC

50 ohm termination 0.0 mA -----80 mA To 2.00V below V CC

Output current

I O Low level Output Current 0.0 mA -----±50.0 mA Operating temperature T A ------ 0°C

-----70°C Storage temperature T S

----- -55°C -----125°C Power Dissipation P D

---------------210 mW Solder temperature T L 4 minutes ----- -----253°C Load

50 Ohm to V CC -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-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 -8 https://www.wendangku.net/doc/20551530.html,/sec of helium

Footnotes:

1) Standard frequency stability (±20,±25,±50ppm & others available)2) V OL , V OH , referenced to ground (V EE ) with V CC = 2.5V

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

Rev. G

CRYSTAL CLOCK OSCILLATORS

Data Sheet 0350C

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