SR-B29B9-FREQ [NEL]
Frequency Range: 250.0 MHz-1.7 GHz; 频率范围： 250.0兆赫， 1.7千兆赫
| 型号： | SR-B29B9-FREQ |
| 厂家： | 
NEL FREQUENCY CONTROLS,INC |
| 描述： | Frequency Range: 250.0 MHz-1.7 GHz |
| 文件： | 总2页 (文件大小：156K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Differential Positive ECL (DPECL)
SR-A29B0
Series
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
Size, mm
• High Reliability - NEL HꢁLT/HꢁSS
qualified for crystal oscillator start-up
conditions
• Cover connected to ground
• 3.3V and 2.5V versions available
• Wide frequency range – 25ꢀ.ꢀMHz to
1.7GHz
9 x 14
I/O
8 pad
• User specified tolerance available
• Will withstand SMD reflow temperatures of
183°C for 4 minutes maximum
• High shock resistance, to 1ꢀꢀꢀg
Supply Voltage
3.3V / 2.5V
• Patent Pending, harmonic
multiplication for
Creating a Part Number
extremely low jitter
SR - A29BX - FREQ
Tolerance/Performance
• High frequency output
eliminates the need for
PLL multiplication
ꢀ
1
7
1ꢀꢀ ppm ꢀ-7ꢀ°C
5ꢀ ppm ꢀ-7ꢀ°C
25 ppm ꢀ-7ꢀ°C
Package Code
SR
8 pad 9x14 mm SMD
9 Customer Specific
Input Voltage
• Stabilities over
ꢁ
B
C
2ꢀ ppm ꢀ-7ꢀ°C
5ꢀ ppm -4ꢀ to ꢂ85°C
1ꢀꢀ ppm -4ꢀ to ꢂ85°C
Code
ꢁ
Specification
3.3 V
2.5 V
temperatures as low as
2ꢀppm eliminates SꢁW
oscillator temperature
problems
B
Drawing Specifications
Electrical Connections
Pin
1
2
3
4
5
6
7
8
Connection
VCC
Ground
NC or Ground
Q Output
/Q Output
Ground
Recommended Board Layout
Dimensions shown in inches (mm).
For the most up to date
specifications on each NEL
product, log on to our
website—www.nelfc.com
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).
Ground
Enable
357 Beloit Street, P.O. Box 457, Burlington, WI 531ꢀ5-ꢀ457 U.S.ꢁ.
Phone: 262-763-3591 Fax: 262-763-2881 Email: nelsales@nelfc.com www.nelfc.com
Differential Positive ECL (DPECL)
SR-A29B0 Series Rev G
Frequency Range: 250.0 MHz-1.7 GHz
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Symbol
Conditions
Min
25ꢀ.ꢀMHz
45/55%
VCC -1.81ꢀV
VCC -1.ꢀ25V
—
—
ꢀV
3.ꢀV
-1ꢀꢀppm
Typical
Max
1.7GHz
55/45%
VCC -1.62ꢀV
VCC -ꢀ.88ꢀV
6ꢀꢀ psec
1 psec
1.ꢀV
VCC
ꢂ1ꢀꢀppm
Frequency
—
—
—
—
—
Duty Cycle
@ 5ꢀ% points
Logic ꢀ (1)
VOL
VOH
—
—
—
—
35ꢀ psec
—
Logic 1(1)
t t
Rise & Fall Time
RMS Random Jitter(5)
Enable Voltage(2)
Disable Voltage
Frequency Stability(3)
r, f 2ꢀ-8ꢀ%VO with 5ꢀ ohm load to VCC -2V
—
—
—
—
with VEE=ꢀV
with VEE=ꢀV
—
—
—
dF/F
Overall conditions including:
voltage, calibration, temp.,
1ꢀ yr aging, shock, vibration
@1ꢀꢀHz
Phase Noise(4)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
-8ꢀ dBc/Hz
-115 dBc/Hz
-13ꢀ dBc/Hz
-13ꢀ dBc/Hz
-135 dBc/Hz
-135 dBc/Hz
@1kHz
@1ꢀkHz
@1ꢀꢀkHz
@1MHz
@1ꢀMHz
General Characteristics
Parameter
Symbol
VCC
Conditions
Min
Typical
3.3 V
—
Max
Supply Voltage
—
5ꢀ ohm termination
to 2.ꢀꢀV below VCC
Low level Output Current
—
3.135 V
ꢀ.ꢀ mꢁ
3.465 V
12ꢀ mꢁ
Supply Current
ICC
Output Current
Operating Temperature
Storage Temperature
IO
Tꢁ
TS
ꢀ.ꢀ mꢁ
—
—
—
5ꢀ.ꢀ mꢁ
º
º
ꢀ C
7ꢀ C
º
º
—
-55 C
125 C
Input: Logic High (ECL) - Disables
VEE or Open - Enables
º
Lead Temperature
Load
TL
Soldering, 1ꢀ sec.
—
—
3ꢀꢀ C
5ꢀ ohm to VCC -2V or Thevenin Equivalent, Bias Required
tS
Start-up Time
—
—
2 ms
1ꢀ ms
Environmental and Mechanical Characteristics
Mechanical Shock
Thermal Shock
Vibration
Per MIL-STD-2ꢀ2, Method 213, Condition E
Per MIL-STD-833, Method 1ꢀ11, Condition ꢁ
ꢀ.ꢀ6ꢀ" double amplitude 1ꢀ Hz to 55 Hz, 35g’s 55 Hz to 2ꢀꢀꢀ Hz
º
Soldering Condition 3ꢀꢀ C for 1ꢀ seconds
Footnotes:
1) VOL, VOH, referenced to ground.
2) Open to enable pin also enables the output.
3) Standard frequency stability (others available).
4) Phase Noise characterization available. Phase Noise is frequency dependent,
phase noise specification references a 1.ꢀGHz part.
5) RMS jitter bandwidth of 12kHz to 2ꢀMHz.
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