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CS2000CP-EZZR Folha de dados(PDF) 1 Page - Cirrus Logic |
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CS2000CP-EZZR Folha de dados(HTML) 1 Page - Cirrus Logic |
1 / 37 page Copyright Cirrus Logic, Inc. 2009–2015 (All Rights Reserved) http://www.cirrus.com Fractional-N Clock Synthesizer & Clock Multiplier Features Delta-Sigma Fractional-N Frequency Synthesis – Generates a Low Jitter 6 - 75 MHz Clock from an 8 - 75 MHz Reference Clock Clock Multiplier / Jitter Reduction – Generates a Low Jitter 6 - 75 MHz Clock from a Jittery or Intermittent 50 Hz to 30 MHz Clock Source Highly Accurate PLL Multiplication Factor – Maximum Error Less Than 1 PPM in High- Resolution Mode I²C / SPI™ Control Port Configurable Auxiliary Output Flexible Sourcing of Reference Clock – External Oscillator or Clock Source – Supports Inexpensive Local Crystal Minimal Board Space Required – No External Analog Loop-filter Components The CS2000-CP is an extremely versatile system clocking device that utilizes a programmable phase lock loop. The CS2000-CP is based on a hybrid ana- log-digital PLL architecture comprised of a unique combination of a Delta-Sigma Fractional-N Frequency Synthesizer and a Digital PLL. This architecture allows for both frequency synthesis/clock generation from a stable reference clock as well as generation of a low- jitter clock relative to an external noisy synchronization clock. The design is also unique in that it can generate low-jitter clocks relative to noisy external synchroniza- tion clocks at frequencies as low as 50 Hz. The CS2000-CP supports both I²C and SPI for full software control. The CS2000-CP is available in a 10-pin MSOP package in Commercial (-10°C to +70°C), Automotive- D (-40°C to +85°C), and Automotive-E (-40°C to +105°C) grades. Customer development kits are also available for device evaluation. Please see “Ordering Information” on page 36 for complete details. I²C / SPI Auxiliary Output 6 to 75 MHz PLL Output 3.3 V I²C/SPI Software Control 8 MHz to 75 MHz Low-Jitter Timing Reference Fractional-N Frequency Synthesizer Digital PLL & Fractional N Logic Output to Input Clock Ratio N Timing Reference PLL Output Lock Indicator 50 Hz to 30 MHz Frequency Reference Output to Input Clock Ratio Frequency Reference SEPT '15 DS761F3 CS2000-CP |
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