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電子發(fā)燒友網(wǎng)>電子資料下載>IC datasheet pdf>cy25200 pdf datasheet (Program

cy25200 pdf datasheet (Program

2008-09-04 | rar | 555 | 次下載 | 3積分

資料介紹

The CY25200 is a Spread Spectrum Clock Generator (SSCG) IC
used to reduce Electro Magnetic Interference (EMI) found in
today’s high speed digital electronic systems.
The device uses a Cypress proprietary Phase-Locked Loop
(PLL) and Spread Spectrum Clock (SSC) technology to
synthesize and modulate the frequency of the input clock. By
frequency modulating the clock, the measured EMI at the fundamental
and harmonic frequencies are greatly reduced. This
reduction in radiated energy significantly reduces the cost of
complying with regulatory agency requirements (EMC) and
improves time to market, without degrading system performance.
The CY25200 uses a factory and field-programmable configuration
memory array to synthesize output frequency, spread %,
crystal load capacitor, clock control pins, PD#, and OE options.
The spread % is factory and field-programmed to either center
spread or down spread with various spread percentages. The
range for center spread is from ±0.25% to ±2.50%. The range for
down spread is from –0.5% to –5.0%. Contact the factory for
smaller or larger spread % amounts, if required.
The input to the CY25200 is either a crystal or a clock signal. The
input frequency range for crystals is 8–30 MHz and for clock
signals is 8–166 MHz.
The CY25200 has six clock outputs, SSCLK1 to SSCLK6. The
frequency modulated SSCLK outputs are programmed from
3–200 MHz.
The CY25200 products are available in a 16-pin TSSOP
package with a commercial operating temperature range of 0 to
70°C.
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