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
LVDS with Tri-State
SD-A2D 00 Series
PRELIMINARY
Description
The SD-A2D00 Series of quartz cryst al oscillat ors provide LVDS compatible signals in a ceramic SMD
package. Systems designers may now specify space-saving, cost-effective packaged LVDS oscillators to
meet their timing requirements.
Features
• Wide frequency range–50. 0MHz to 250.0M Hz
• 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 1000g
• 3.3 volt operation (ot her voltages available upon
request)
• Metal lid electrically connected to ground to
reduce EMI
• Enable/Disable (Tri-stat e)
• LVDS output on pin 4, complement on Pin 5
• Low Jitter - Wavecrest jitter characterization
available
• High Reliability - NEL HALT/HASS qualified for
crystal oscillat or start-up conditions
• Overtone technology
• High Q Crystal actively t uned 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 Co n nection
Pin Connection
1 N.C.
2 Enable/Disable
3 Ground
4 Output
5 Output
Complement
6 VCC
CRYSTAL CLOCK OSCILLATORS Data Sheet 0208F
Rev. B
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
SD-A2D00 Series Continued
LVDS
Operating Conditions and Output Characteristics
Electrical Ch aracteri stics
Parameter Symbol Conditions Min Typical Max
Frequency ----- ----- 50.0MHz ----- 250.0MHz
Duty Cycle(2) ----- @ VO /2 45/55% ----- 55/45%
Logic 0 (2) VOL ----- 0.80V ----- 1.10V
Logic 1 (2) VOH ----- 1.25V ----- 1.55V
Differential Voltage (2) VOD ----- 250 mV ----- 450 mV
Disable Voltage VIL ----- GND ----- 0.8V
Enable Voltage VIH (or open) 2.0V ----- VCC
Rise & Fall Time (2) tr,tf 20-80%VO ----- 0.8 ns 1.0 ns
Tpd (4) ----- ----- -0.5 ns ----- +0.5 ns
Jitter, RMS(3) ----- ----- ----- ----- 3 psec
Enable (Low) voltage ----- ----- ----- ----- 800mV
Disable (High) voltage ----- ----- 2.00V ----- -----
Frequency Stability (1) dF/F Overall conditions including: -100ppm ----- +100ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
General Ch aracteristics
Parameter Symbol Conditions Min Typical Max
Supply Voltage VCC ----- 3.15V 3.3V 3.45V
Supply Current ICC ----- 0.0 mA ----- 80 mA
Output current IO Continuous Output Current 0.0 mA ----- ±50.0 mA
Operating temperature TA ------ 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Power Dissipation PD----- ----- ----- 345 mW
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load 100 ohms across differential outputs
Start-up time tS----- ----- 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 of helium
Footnotes:
1) Standard frequency stability (±20,±25,±50ppm & others available)
2) With Load of 100 ohms across differential outputs.
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
4) Tpd is phase shift between the falling edge of pin 4 and the rising edge of pin 5.
Rev. B
CRYSTAL CLOCK OSCILLATORS
SD - A2D0X - FREQ
Package Code Tolerance/Performance
SD 6 Pad 5x7 SMD 0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
7 ±25ppm 0-70°C
Input Volt age 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 0208F
