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CDC421100RGET Fiches technique(PDF) 1 Page - Texas Instruments |
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CDC421100RGET Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 9 page www.ti.com FEATURES APPLICATIONS Crystal Oscillator Input ExternalCrystal Feedback Divider LoopFilter VCO CLK NCLK B0216-02 DESCRIPTION CDC421xxx SLAS540 – APRIL 2007 FULLY INTEGRATED FIXED FREQUENCY LOW-JITTER, CRYSTAL-OSCILLATOR CLOCK GENERATOR • Output Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, • Single 3.3 V Supply and 312.5 MHz • High-Performance Clock Generator, • Differential Low-Voltage Positive Emitter Incorporating Crystal Oscillator Circuitry With Coupled Logic (LVPECL) Output Integrated Frequency Synthesizer • Fully Integrated Voltage-Controlled Oscillator • Low Output Jitter, as Low as 380 fs (rms (VCO) Running from 1.75 GHz to 2.35 GHz integrated between 10 kHz–20 MHz) • Typical Power Consumption 300 mW • Low Phase Noise at 312.5 MHz, Less Than –120 dBc/Hz at 10 kHz and –147 dBc/Hz at 10 • Chip-Enable Control Pin MHz Offset From the Carrier • QFN-24 Package • Supports Crystal Frequencies or LVCMOS • ESD Protection Exceeds 2 kV HBM Input Frequencies at 31.25 MHz, 33.33 MHz, • Industrial Temperature Range –40°C to 85°C and 35.42 MHz A A • Low-Cost, Low-Jitter Frequency Multiplier A A CDC421xxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based voltage-controlled oscillator (VCO) that operates within the 1.75 GHz–2.35 GHz frequency range. It has an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for the PLL-based frequency synthesizer. The output frequency (fout) is proportional to the frequency of the input crystal (fxtal). The device operates in a 3.3 V supply environment and is characterized for operation from –40 °C to 85°C. CDC421xxx is available in a QFN-24 package. A high-level block diagram of the CDC421xxx is shown in Figure 1. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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Description similaire - CDC421100RGET |
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