SJ-A2920
Series
Differential Positive ECL (DPECL) Fast Edge
SJ-A2920 Series
Rev K
Frequency Range: 50.0 MHz to 200.0 MHz
Description
The SJ-A2920 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 require-
ments.
Features
Size, mm
9 x 14
I/O
4 J Lead
Supply Voltage
3.3V / 5V
• High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions
• Low jitter - Wavecrest jitter characterization avail-
able
• Wide frequency range—50.0 MHz to 200.0 MHz
• 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 3000g
• 3.3 Volt operation
• Metal lid electrically connected to ground to
reduce EMI
• Fast rise and fall times, <600 ps
• 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 leads—Solder dipped leads available
upon request
• RoHS Compliant, Lead Free Construction
(unless solder dipped leads are supplied)
Creating a Part Number
SJ - A292X - FREQ
Package Code
SJ
4 J Lead 9x14 mm SMD
Input Voltage
Code Specification
A
3.3 V
5V
Tolerance/Performance
0 ±100 ppm 0-70°C
1 ±50 ppm 0-70°C
7 ±25 ppm 0-70°C
9 Customer Specific
A ±20 ppm 0-70°C
B ±50 ppm -40 to +85°C
C ±100 ppm -40 to +85°C
Drawing Specifications
Electrical Connection
Pin
1
For the most up to date speci-
fications on each NEL prod-
uct, log on to our website—
www.nelfc.com
Dimensions shown in inches and millimeters.
2
3
4
Connection
Output
Complement
V
EE
/Ground
Output
V
CC
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
Differential Positive ECL (DPECL) Fast Edge
SJ-A2920 Series
Rev K
Frequency Range: 50.0 MHz to 200.0 MHz
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Symbol
—
—
V
OL
V
OH
tr, tf
—
—
dF/F
Frequency
Duty Cycle
Logic 0
(2)
Logic 1
(2)
Rise & Fall Time
Tpd
(4)
Jitter, RMS
(3)
Frequency Stability
(1)
—
50.0 MHz
@V
CC
-1.29 V
45/55%
—
1.35 V
—
2.28 V
—
20-80% V
O
with 50 ohm load to V
CC
-2 V
—
-200 psec
—
—
Overall conditions including:
-100 ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
Conditions
Min
Typical
—
—
—
—
—
—
—
—
200.0 MHz
55/45%
1.70 V
2.56 V
600 psec
+200 psec
3 psec
+100 ppm
Max
Supply Voltage
Supply Current
Output Current
Operating Temperature
Storage Temperature
Power Dissipation
Lead Temperature
Load
Start-up Time
General Characteristics
Parameter
Symbol
V
CC
—
I
CC
50 ohm termination to 2.00 V below V
CC
Low level Output Current
I
O
T
A
—
T
S
—
—
P
D
T
L
Soldering, 10 sec.
50 ohm to V
CC
-2 V or Thevenin Equivalent, Bias Required
—
t
S
Conditions
3.15 V
0.0 mA
0.0 mA
0ºC
-55ºC
—
—
—
Min
Typical
3.3 V
—
—
—
—
—
—
2 ms
3.45 V
80 mA
±50.0 mA
70ºC
125ºC
276 mW
300ºC
10 ms
Max
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 55 Hz to 2000 Hz
300ºC for 10 seconds
Leak rate less than 1 x 10
-8
atm.cc/sec of helium
Footnotes:
1) Standard frequency stability (±20, ±25, ±50 ppm & others available).
2) V
OL
, V
OH
, referenced to ground (V
EE
) with V
CC
= 3.3 V.
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 2.0 V and the rising edge of pin 1 at 2.01 V.
Test Circuit
Test Circuit uses a split supply of
+2V and -1.3V for ease of testing.
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