SJ-A2870-FREQ [NEL]
CRYSTAL CLOCK OSCILLATORS; 晶体时钟振荡器
| 型号： | SJ-A2870-FREQ |
| 厂家： | 
NEL FREQUENCY CONTROLS,INC |
| 描述： | CRYSTAL CLOCK OSCILLATORS |
| 文件： | 总2页 (文件大小：382K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet 0225A
CRYSTAL CLOCK OSCILLATORS
Rev. C
Differential Positive ECL (DPECL)
SJ-B2870 Series
Description
The SJ-B2870 Series of quartz crystal oscillators provide MECL 10K and 10KH series compatible signals
in a ceramic SMD package. Systems designers may now specify space-saving, cost-effective packaged
PECL oscillators to meet their timing requirements.
Features
• Wide frequency range–50.0MHz to 100.0MHz
• User specified tolerance available
• Low Jitter - Wavecrest jitter characterization
available
• Will withstand SMD reflow temperatures of 253°C • High Reliability - NEL HALT/HASS qualified for
for 4 minutes maximum
crystal oscillator start-up conditions
• High Q Crystal actively tuned oscillator circuit
• Power supply decoupling internal
• Space-saving alternative to discrete component
oscillators
• High shock resistance, to 1000g
• 2.5 volt operation
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
• Gold plated leads - Solder dipped leads available
upon request
• Metal lid electrically connected to ground to
reduce EMI
• MECL 10K and 10KH series compatible output on
Pin 3, complement on Pin 1
• RoHS Compliant, Lead Free Construction
(unless solder dipped leads are supplied)
Electrical Connection
Pin
Connection
1
2
3
4
Output Complement
VEE /Ground
Output
VCC
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
Data Sheet 0225A
CRYSTAL CLOCK OSCILLATORS
Rev. C
SJ-B2870 Series Continued
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Frequency
Symbol
-----
Conditions
-----
Min
Typical
Max
50.0MHz
45/55%
VCC-1.95V
VCC-1.12V
-----
-----
-----
-----
1.0 ns
-----
-----
-----
100.0MHz
55/45%
VCC-1.50V
VCC-0.74V
2.0 ns
Duty Cycle
-----
@ VCC-1.29V
-----
Logic 0 (2)
VOL
Logic 1(2)
VOH
-----
Rise & Fall Time
Tpd (4)
tr,tf 20-80%VO with 50 ohm load to VCC-2V -----
-----
-----
dF/F
-----
-0.5 ns
-----
+0.5 ns
3 psec
Jitter, RMS(3)
Frequency Stability (1)
-----
Overall conditions including:
voltage, calibration, temp.,
10 yr aging, shock, vibration
-100ppm
+100ppm
General Characteristics
Parameter
Symbol
Conditions
Min
Typical
2.5V
Max
Supply Voltage
Supply Current
VCC
ICC
2.5V±5%
2.375V
0.0 mA
2.625V
50 mA
50 ohm termination
To 2.00V below VCC
-----
Output current
IO
Low level Output Current 0.0 mA
-----
-----
-----
-----
-----
±50.0 mA
70°C
Operating temperature
Storage temperature
Power Dissipation
Lead temperature
Load
TA
TS
PD
TL
------
0°C
-----
-55°C
-----
125°C
-----
131 mW
300°C
Soldering, 10 sec.
-----
50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
Start-up time
tS
-----
-----
2 ms
10 ms
Environmental and Mechanical Characteristics
Mechanical Shock
Thermal Shock
Vibration
Per MIL-STD-202, Method 213, Condition E
Per MIL-STD-833, Method 1011, Condition A
0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz
300°C for 10 seconds
Soldering Condition
Hermetic Seal
ESD Sensitivity
Leak rate less than 1 x 10 -8 atm.cc/sec of helium
Human Body Model per ON Semiconductor 10kH series ECL: 500V min.
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.
RMS jitter bandwidth of 12kHz to 20MHz.
4) Tpd is phase shift between the falling edge of pin 3 at VCC-1.29V and rising edge of pin 1 at VCC-1.29V.
Creating a Part Number
SJ - B287X - FREQ
Package Code
Tolerance/Performance
0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
SJ 4 J Lead SMD
7 ±25ppm 0-70°C
Input Voltage
9 Customer Specific
A ±20ppm 0-70°C
Code Specification
A
B
3.3V
2.5V
5V
B ±50ppm -40 to +85°C
C ±100ppm -40 to +85°C
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
相关型号：
©2020 ICPDF网 联系我们和版权申明