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參數資料
| 型號： | FREQCFSS-2M+/-1%C |
| 廠商： | IQD FREQUENCY PRODUCTS LTD |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 8 MHz - 170 MHz, CMOS OUTPUT |
| 封裝： | ROHS COMPLIANT, HERMETIC SEALED, CERAMIC PACKAGE-6 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 523K |
CLOCK
OSCILLA
TORS
IQD Frequency Products Ltd, Station Road, Crewkerne, Somerset TA18 8AR, United Kingdom
Tel: +44 (1460) 270200; Fax: +44 (1460) 72578;
Email: info@iqdfrequencyproducts.com Web: www.iqdfrequencyproducts.com
CFSS-2 SPREAD SPECTRUM CLOCK OSCILLATORS
ISSUE 5; 27 NOVEMBER 2009 - RoHS 2002/95/EC
Description
Spread spectrum surface mount oscillators in a ceramic
package with a hermetically sealed metal lid
Package Outline
7 x 5mm
Frequency Range
8 to 170MHz
Output Compatibility & Load
Tri-state CMOS
Drive Capability 15pF max
Frequency Stabilities (averaged frequency)
±100ppm (inclusive of supply voltage and output load
variations over the operating temperature range
)
Operating Temperature Ranges
–10 to 70°C ( CFSS-2 )
–40 to 85°C ( CFSS-2I )
Storage Temperature Range
–40 to 85°C
Tri-state Operation
Logic ‘1’ to pad 1 (>70% Vs) enables oscillator output.
Logic ‘0’ to pad 1 (<30% Vs) disables oscillator output, the
oscillator output goes to a high impedance state.
No connection to pad 1 enables oscillator outputs.
Modulation Ratios
Centre Spread ±0.25, ±0.5%, ±0.75%, ±1%, ±1.5%, ±2%
Down Spread –0.5%, –1%, –1.5%, –2%, –3%, –4%,
Internal Spread Spectrum Modulation Frequency
30kHz to 33kHz
Spread Spectrum Enable Connection ( pad 2 )
Logic ‘1’ to pad 2 (>70% Vs), spread spectrum is off.
Logic ‘0’ to pad 2 (<30% Vs), spread spectrum is on.
No connection to pad 1, spread spectrum is on.
Cycle to Cycle Jitter ( SS on )
8MHz to <133MHz 400ps max pk-pk
133MHz to 170MHz 250ps max pk-pk
Start Up Time
10ms max
Note: Power-up time for all Vs to reach minimum specifed
voltage 0.05ms ~ 500ms (power ramp must be monotonic)
Environmental Specification
Shock: MIL-STD-202F, Method 213B (1000g, 0.5ms)
Vibration: MIL-STD-202F, Method 204D, Cond.D 20g, 10-
2000Hz, 4 hrs duration in each of 3 mutually perpendicular
axis
Outline (mm)
Solder pad layout
1.8
2.0
2.54
Pad Connections
1. Enable/Disable
2. SSON
3. GND
4. Output
5. N/C
6. +Vs
1.4±0.2
5.0
max
7.5 max
1.4
2.6
1
2
3
5
6
4
4.2
5.08
Underside View
Test Circuit
Oscilloscope
Oscillator
4
3
1 2
Frequency
Counter
A
Power
Supply
V
+Vs
15pF*
+Vs
*Inclusive of jigging and equipment capacitance
5
6
0.01 F
Marking Includes
Model Number + Frequency
Packaging
Loose in bulk pack or tape and reel
Tape & Reel in accordance with EIA-481-D
Minimum Order Information Required
Frequency + Model Number + Operating Temperature
Code (if applicable) + Modulation Ratio
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