HN-A2970-FREQ [NEL]
CRYSTAL CLOCK OSCILLATORS; 晶体时钟振荡器
| 型号： | HN-A2970-FREQ |
| 厂家： | 
NEL FREQUENCY CONTROLS,INC |
| 描述： | CRYSTAL CLOCK OSCILLATORS |
| 文件： | 总2页 (文件大小：34K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet 0325B
CRYSTAL CLOCK OSCILLATORS
Rev. B
Differential Positive ECL (DPECL)
SN-A2970 Series
PRELIMINARY
Description
The SN-A2970 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. This
device is to operate using positive voltage and uses multiple ground pins for improved signal integrity. This
device is intended to operate on positive voltage for PECL applications.
Features
• Wide frequency range–671.0MHz to 1.7GHz
• User specified tolerance available
• Case at electrical ground
• High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions
• Overtone technology
• Will withstand vapor phase temperatures of 253°C • High Q Crystal actively tuned oscillator circuit
for 4 minutes maximum
• All metal, resistance weld, hermetically sealed
package
• High shock resistance, to 1500g
• Low Jitter - Wavecrest jitter characterization
available
• Power supply decoupling internal
• Dual ground plane for added stability
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
• RoHS Compliant, Lead Free Construction
Electrical Connection
Pin
Connection
1
2
VEE Ground
VCC
7
Output
8
9
10
15
16
/Output
VEE Ground
VCC
VCC
VEE Ground
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 0325B
CRYSTAL CLOCK OSCILLATORS
Rev. B
SN-A2970 Series Continued
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Frequency
Symbol
-----
-----
VOL
VOH
Conditions
-----
@ 50% points
-----
Min
671.0MHz
45/55%
VCC-1.95V
VCC-1.02V
Typical
-----
-----
-----
Max
1.7GHz
55/45%
VCC-1.60V
VCC-0.74V
400 psec
-----
1.0V
VCC
+100ppm
Duty Cycle
Logic 0 (2)
Logic 1(2)
-----
-----
Rise & Fall Time
Jitter, RMS(3)
Enable Voltage(4)
Disable Voltage
Frequency Stability (1)
tr,tf 20-80%VO with 50 ohm load to VCC-2V -----
-----
----
-----
dF/F
300 psec
3 psec
-----
-----
-----
-----
with VEE=0V
with VEE=0V
-----
0V
3.0V
-100ppm
Overall conditions including:
voltage, calibration, temp.,
10 yr aging, shock, vibration
General Characteristics
Parameter
Supply Voltage
Supply Current
Symbol
VCC
ICC
Conditions
-----
50 ohm termination
To 2.00V below VCC
Min
3.135V
0.0 mA
Typical
3.3V
-----
Max
3.465V
300 mA
Output current
Operating temperature
Storage temperature
IO
TA
TS
Low level Output Current 0.0 mA
-----
-----
-----
±50.0 mA
70°C
125°C
------
-----
0°C
-55°C
Input: Logic High (ECL) - Disables
VEE or Open - Enables
Lead temperature
Load
TL
Soldering, 10 sec.
-----
-----
300°C
10 ms
50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
tS ----- -----
Start-up time
2 ms
Environmental and Mechanical Characteristics
Mechanical Shock
Thermal Shock
Vibration
Soldering Condition
Hermetic Seal
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
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
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
RMS jitter bandwidth of 12kHz to 20MHz.
4) Open to Enable pin also enables to output.
Creating a Part Number
SN - A297X - FREQ
Package Code
Tolerance/Performance
0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
HN Leaded 8 pin (16pin)
SN 8 pin (16 pin) SMD Gull
Wing
7 ±25ppm 0-70°C
Input Voltage
Code Specification
9 Customer Specific
A ±20ppm 0-70°C
A
3.3V
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
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