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The ICS180-51 generates a low EMI output clock from a clock or crystal input. The device uses IDT’s proprietary mix of analog and digital Phase-Locked Loop (PLL) technology to spread the frequency spectrum of the output, thereby reducing the frequency amplitude peaks by several dB. The ICS180-51 offers center spread selection of +/-0.625% and +/-1.875%. Refe.
• Pin and function compatible to Cypress W180-51
• Packaged in 8-pin SOIC
• Provides a spread spectrum output clock
• Accepts a clock input and provides same frequency
dithered output
• Input frequency of 8 to 28 MHz
• Peak reduction by 7dB - 14dB typical on 3rd - 19th
odd harmonics
• Spread percentage selection for +/-0.625% and
+/-1.875%
• Operating voltage of 3.3 V and 5 V
• Advanced, low-power CMOS process
Block Diagram
VDD
FS2:1 SS%
X1/CLKIN X2
Clock Buffer/ Crystal
Oscillator
PLL Clock Synthesis and Spread Spectrum Circuitry
CLK
GND
IDT™ / ICS™ LOW EMI CLOCK GENERATOR
1
ICS180-5.
ICS180-51 - IDT
The ICS180-51 generates a low EMI output clock from a clock or crystal input. The device uses IDT’s proprietary mix of a.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | ICS180-53 |
IDT |
LOW EMI CLOCK GENERATOR |
|
| 2 | ICS180-01 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|
| 3 | ICS180-01 |
IDT |
LOW EMI CLOCK GENERATOR |
|
| 4 | ICS180-01 |
Renesas |
LOW EMI CLOCK GENERATOR |
|
| 5 | ICS180-02 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|
| 6 | ICS181-01 |
Renesas |
LOW EMI CLOCK GENERATOR |
|
| 7 | ICS181-03 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|
| 8 | ICS181-51 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|
| 9 | ICS181-52 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|
| 10 | ICS181-52 |
Renesas |
LOW EMI CLOCK GENERATOR |
|
| 11 | ICS181-52 |
IDT |
LOW EMI CLOCK GENERATOR |
|
| 12 | ICS181-53 |
Integrated Circuit Systems |
Low EMI Clock Generator |
|