NEL SK-A2D00 DATA SHEET

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CRYSTAL CLOCK OSCILLATORS

Data Sheet 0439C

Rev. C

LVDS

SK-A2D00 Series

Description

The SK-A2D00 Series of quartz crystal oscillators provide LVDS compatible signals. This device is to
operate using positive voltage and uses multiple ground pins for improved signal integrity.

Features

• Wide frequency range - 80.0MHz to 540.0MHz

• User specified tolerance available

• Case at electrical ground

• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum

• All metal, resistance weld, hermetically sealed
package

• High shock resistance, to 1000g

• Enable/Disable

• 3.3 volt operation

• LVDS output on pin 7, complement on Pin 8

• Low Jitter - Wavecrest jitter characterization
available

• High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions

• 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 leads

Electrical Connection

Pin Connection

1 V

CC

2 VEE Case
6 V

EE

Case
7 Output
8 /Output
9 V
13 V

Case

EE

Case

EE

14 Enable/Disable

All other pins are
No Connect

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

Email: [e-mail]

www.nelf c.com

CRYSTAL CLOCK OSCILLATORS

Data Sheet 0439C

SK-A2D00 Series Continued

Rev. C

LVDS

Operating Conditions and Output Characteristics

Electrical Characteristics

Parameter Symbol Conditions Min Typical Max

Frequency ----- ----- 80.0MHz ----- 540.0MHz
Duty Cycle
Logic 0
Logic 1
Differential Voltage
Disable Voltage ----- with VEE=0V ----- ----- 0.8V
Enable Voltage
Rise & Fall Time
Tpd
Jitter, RMS
Frequency Stability

10 yr aging, shock, vibration

General Characteristics

Parameter Symbol Conditions Min Typical Max

Supply Voltage VCC ----- 3.135V 3.3V 3.465V
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 ----- 55°C
Storage temperature TS ----- -55°C ----- 125°C
Power Dissipation P
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load 100 ohms across differential outputs
Start-up time t

(2)

----- @ VO/2 45/55% ----- 55/45%

(2)

(2)

(4)

(3)

(2)

(5)

---- with VEE=0V 2.0V ----- -----

(2)

(1)

VOL ----- 0.80V ----- 1.10V
VOH ----- 1.25V ----- 1.55V
V

OD

----- 250 mV ----- 450 mV

tr,tf 20-80%VO ----- 0.8 ns 1.0 ns

----- ----- -0.5 ns ----- +0.5 ns

----- ----- ----- ----- 3 psec

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

voltage, calibration, temp.,

D

S

----- ----- ----- 277 m W

----- ----- 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.
RMS jitter bandwidth of 12kHz to 20MHz.

4) Tpd is phase shift between the falling edge of pin 7 and the rising edge of pin 8.

5) Open to enable also enables the output.

Creating a Part Number

SK - A29DX - FREQ

Package Code

HK Leaded 8 pin (14 pin) 0 ±100ppm 0-70°C
SK 8 pin (14 pin) SMD Gull 1 ±50ppm 0-70°C
Wing 7 ±25ppm 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

Tolerance/Performance

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.nelf c.com