SR-A29BB 데이터 시트보기 (PDF) - NEL Frequency Controls
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SR-A29BB Datasheet PDF : 2 Pages
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SR-A29B0
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
temperatures as low as
±20ppm eliminates SAW
oscillator temperature
problems
Differential Positive ECL (DPECL)
SR-A29B0 Series Rev G
Frequency Range: 250.0 MHz-1.7 GHz
Description
The SR-A29B0 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 – 250.0MHz to
1.7GHz
• User specified tolerance available
• Will withstand SMD reflow temperatures of
183°C for 4 minutes maximum
• High shock resistance, to 1000g
• H igh Reliability - NEL HALT/HASS
qualified for crystal oscillator start-up
conditions
• Cover connected to ground
• 3.3V and 2.5V versions available
Creating a Part Number
Package Code
SR
8 pad 9x14 mm SMD
Input Voltage
Code Specification
A
3.3 V
B
2.5 V
SR - A29BX - FREQ
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
For the most up to date
specifications on each NEL
product, log on to our
website—www.nelfc.com
Electrical Connections
Pin
Connection
1
VCC
2
Ground
3
NC or Ground
4
Q Output
5
/Q Output
6
Ground
7
Ground
8
Enable
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).
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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