ASM3P2111A

Generates an EMI optimized clocking signal at output.
Input frequency 25 MHz.
Frequency outputs:
   o 60 MHz (unmodulated)
   o 2 x 48 MHz (unmodulated)
   o 66.6 MHz (modulated) -1.7% down spread
Modulation rate: 30 KHz.
Supply voltage range: 3.3V ± 0.3V.
Available in 8-pin SOIC Package.
Commercial and Industrial Temperature range.

ASM3P2111A is targeted towards EMI management for high speed digital applications such as PC peripheral devices, consumer electronics and embedded controller systems.

Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability.

The ASM3P2111A is a versatile spread spectrum frequency modulator. It reduces electromagnetic interference (EMI) at the clock source.

The ASM3P2111A allows significant system cost savings by reducing the number of circuit board layers and shielding that are required to pass EMI gulations. The ASM3P2111A modulates the output of PLL in order to spread the bandwidth of a synthesized clock, thereby decreasing the peak amplitudes of its harmonics. This results in significantly lower system EMI compared to the typical narrow band signal produced by oscillators and most clock generators. Lowering EMI by increasing a signal's bandwidth is called spread spectrum clock generation.