5.0VDC or 3.3VDC • 8 PINDIP • HCMOS/ TTL
LOW EMI SPREAD SPECTRUM CRYSTAL CLOCK OSCILLATORS
ASSH
FEATURES:
•
Integrated Spread Spectrum technology
• Standard TTL or HCMOS output.
• Meets jitter requirements for all major
CISC, RISC and DSP processors
• Frequency Range of 15 to 120 MHz @ 5.0 VDC.
• Frequency Range of 15 to 90 MHz @ 3.3 VDC.
Amplitude (dB)
Frequency (MHz)
APPLICATIONS:
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•
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Medical
Printers
Scanners
Modems
Telecommunications
Aerospace
Copier
Automotive
ADDITIONAL BENEFITS:
•
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Reduce emissions up to 20 dB.
Systemic approach to EMI.
Highly cost effective compared to other methods.
Eliminate need for individual node suppression.
Eliminate need for expensive shielding.
Reduce component count.
Reduce PCB layer count.
Drop- in replacement for 8 pin DIP packages.
MECHANICAL DIMENSIONS:
PIN CONFIGURATION:
Pin Number
1
4
5
8
Table1
Function
NC
GND
OUTPUT
VDC
Dimensions: Inches (mm)
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: Left blank if standard
•
All specifications and markings subject to change without notice
ABRACON
®
18
29 Journey • Aliso Viejo, CA 92656 • USA
(949) 448-7070
•
F
AX
: (949) 448-8484
E-
MAIL
:
abinfo
@
abracon.com •
I
NTERNET
A
DDRESS
:
www.abracon.com
C O R P O R AT I O N
05/2003
Rev. 2.4
5.0VDC or 3.3VDC • 8 PIN DIP • HCMOS/ TTL
LOW EMI SPREAD SPECTRUM CRYSTAL CLOCK OSCILLATORS
ASSH
Table 2
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
ASSH
Operating Temperature (Topr)
0°C to +70°C
Storage Temperature
(Tsto)
- 65°C to +150°C
± 100 ppm max. (See Options)
Frequency Stability vs. Temp
(dF/Fo)
Operating Supply Voltage (VDC)
3.3 VDC
5.0 VDC
Frequency Range
(Fo)
15 – 90 MHz
15 – 120 MHz
Operating Input Current (IDD)
40 mA max
75 mA
Duty Cycle
45/55
45/55
Output Voltage (VOH/VOL)
2.4 VDC min.
4.0 VDC min.
Rise Time
5.0 typ.
3.5 typ.
Conditions
+/-5 %
F = 90 MHz
% max
Load =15 pF, 10 –
90%
Load =15 pF, 10 –
90%
Fall Time
Start-up Time
Aging
Jitter
Output Load
Modulation Frequency (Fm)
3.2 typ.
2.3 typ.
10 ms max. 3 ms typ.
+/- 5ppm max. /year
500 ps. max.
10-LSTTL or 15 pF
20 – 40 kHz
0°C to +70°C
15 – 120 MHz
Download Spread Spectrum Clocking application note on Abracon website at www.abracon.com/emi/ssc.
Table 3
FACTORY BANDWIDTH SELECTION (±10%)
FACTOR BANDWIDTH SELECTION OPTIONS:
BANDWIDTH %
Center Spread
C1
±
0.625
C2
±
1.25
C3
±
2.50
C4
±
5.00
ORDERING OPTION
ASSH - FREQUENCY - FREQ. STABILITY - BANDWIDTH
-Cx = Center Spread
(See table 3 for options)
Fo in MHz as; XXX.XXXX
-R for ±25 ppm max
-K for ±30 ppm max
-H for ±35 ppm max
-C for ±50 ppm max
Example:
ASSH-048.0000-C-C4
Would be the part number for a 48.0000 MHz, ±5.0% center spread with a +/-50 ppm center frequency
accuracy .
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
Rev. 2.4
NOTE: Left blank if standard
•
All specifications and markings subject to change without notice
ABRACON
®
29 Journey • Aliso Viejo, CA 92656 • USA
(949) 448-7070
•
F
AX
: (949) 448-8484
E-
MAIL
:
abinfo
@
abracon.com •
I
NTERNET
A
DDRESS
:
www.abracon.com
C O R P O R AT I O N
05/2003
19
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