SR-A2A70
Series
Size, mm
9 x 14
I/O
8 pad
Supply Voltage
3.3V / 2.5V
Patent Pending, harmonic
multiplication for
extremely low jitter
High frequency output
eliminates the need for
PLL multiplication
Stabilities over tempera-
tures as low as 20ppm
eliminates SAW oscillator
temperature problems
Features
Wide frequency range 250.0MHz
to 1.7GHz
User specifi ed tolerance available
Will withstand SMD refl ow temperatures
of 183C for 4 minutes maximum
High shock resistance, to 1000g
High Reliability - NEL HALT/HASS
qualifi ed for crystal oscillator start-up
conditions
Cover connected to ground
3.3V and 2.5V versions available
Differential Sine Wave
SR-A2A70 Series
0435A Rev J
Frequency Range: 250.0 MHz-1.7 GHz
Creating a Part Number
SR - A2A7X - FREQ
Package Code
SR
8 pad 9x14 mm SMD
Input Voltage
Code Specifi cation
A 3.3
V
B 2.5
V
Tolerance/Performance
0 100 ppm 0-70C
1 50 ppm 0-70C
7 25 ppm 0-70C
9 Customer Specifi c
A 20 ppm 0-70C
B 50 ppm -40 to +85C
C 100 ppm -40 to +85C
Drawing Specifi cations
Description
The SR-A2A70 Series
of quartz crystal oscillators provide Differential Sine Wave signals.
This device is to operate using positive voltage and uses multiple ground pins for improved
signal integrity.
Recommended Board Layout
Dimensions shown in inches (mm).
The metallic center pad was designed for
mechanical support. Grounding of this pad is
optional. It measures 0.088 x 0.190 NOM
(2.24 x 4.83 NOM).
For the most up to date
specifi cations on each NEL
product, log on to our
website--www.nelfc.com
Electrical Connections
Pin Connection
1 V
CC
2 Ground
3
NC or Ground
4 Q
Output
5 /Q
Output
6 Ground
7 Ground
8 Enable
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
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol
Conditions Min
Typical
Max
Frequency
--
--
250.0 MHz
-- 1.7
GHz
Harmonic Spurious
--
--
-- -25dBc
-20dBc
Nonharmonic Spurious
--
--
--
-- -60dBc
Output Voltage
V
P
-
P
--
0.60 V
0.85 V
--
Jitter RMS
(5)
--
--
--
0.3 psec
0.5 psec
Enable Voltage
(3)
--
-- 0.7
V
CC
--
--
Disable Voltage
--
--
--
-- 0.3
V
CC
Frequency Stability
(1)
dF/F
Overall conditions including:
-100ppm
-- +100ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
Phase Noise
(2)
-- @100Hz --
-- -80
dBc/Hz
-- @1kHz --
-- -115
dBc/Hz
-- @10kHz --
-- -130
dBc/Hz
-- @100kHz --
-- -130
dBc/Hz
-- @1MHz --
-- -135
dBc/Hz
-- @10MHz --
-- -135
dBc/Hz
General Characteristics
Parameter Symbol
Conditions Min
Typical
Max
Supply Voltage
V
CC
3.3V 5%
3.135 V
3.3 V
3.465 V
Supply Current
I
CC
50 ohm termination
0.0 mA
-- 120
mA
Output Current
I
O
Low level Output Current
0.0 mA
-- 50.0
mA
Operating Temperature
T
A
--
0C
-- 70C
Storage Temperature
T
S
-- -55C
-- 125C
Lead Temperature
T
L
Soldering, 10 sec.
--
-- 300C
Load
(4)
50 ohm termination
Start-up Time
t
S
--
-- 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 55 Hz to 2000 Hz
Soldering Condition 300C for 10 seconds
Footnotes:
1) Standard frequency stability (20, 25, 50 ppm & others available).
2) Phase Noise characterization available. Phase Noise is frequency dependent, phase noise specifi cation
references a 1.0GHz part.
3) Open to enable pin also enables the output.
4) Internally AC coupled output.
5) Jitter performance is frequency dependent. Please contact factory for full Aerofl ex characterization.
RMS jitter bandwidth of 12kHz to 20MHz.
Differential Sine Wave
SR-A2A70 Series
0435A Rev J
Frequency Range: 250.0MHz-1.7 GHz
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