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CDC421A156RGET 数据表(PDF) 1 Page - Texas Instruments |
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CDC421A156RGET 数据表(HTML) 1 Page - Texas Instruments |
1 / 15 page 1 FEATURES APPLICATIONS DESCRIPTION Crystal Oscillator Input Feedback Divider LoopFilter VCO External Crystal CLK NCLK CDC421AXXX www.ti.com ....................................................................................................................................................................................................... SCAS875 – MAY 2009 Fully-Integrated, Fixed-Frequency, Low-Jitter Crystal Oscillator Clock Generator • Low-Cost, Low-Jitter Frequency Multiplier 2 • Single 3.3-V Supply • High-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer The CDC421Axxx is a high-performance, low-phase-noise clock generator. It has an integrated • Low Output Jitter: As low as 380 fs (RMS low-noise, LC-based voltage-controlled oscillator integrated between 10 kHz to 20 MHz) (VCO) that operates within the 1.75 GHz to 2.35 GHz • Low Phase Noise at 312.5 MHz: frequency range. It has an integrated crystal oscillator – Less than –120 dBc/Hz at 10 kHz and that operates in conjunction with an external AT-cut –147 dBc/Hz at 10-MHz offset from carrier crystal to produce a stable frequency reference for a phase-locked loop (PLL)-based frequency • Supports Crystal or LVCMOS Input synthesizer. The output frequency (fOUT) is Frequencies at 31.25 MHz, 33.33 MHz, and proportional to the frequency of the input crystal 35.42 MHz (fXTAL). • Output Frequencies: 100 MHz, 106.25 MHz, The device operates in 3.3-V supply environment and 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and is characterized for operation from –40°C to +85°C. 312.5 MHz The CDC421Axxx is available in a QFN-24 4-mm × • Differential Low-Voltage Positive Emitter 4-mm package. Coupled Logic (LVPECL) Outputs The CDC421Axxx differs from the CDC421xxx in • Fully-Integrated Voltage-Controlled Oscillator the following ways: (VCO): Runs from 1.75 GHz to 2.35 GHz • Device Startup • Typical Power Consumption: 300 mW The CDC421Axxx has an improved startup circuit • Chip Enable Control Pin to enable correct operation for all power-supply ramp times. • Available in 4-mm × 4-mm QFN-24 Package • ESD Protection Exceeds 2 kV (HBM) • Industrial Temperature Range: –40°C to +85°C CDC421Axxx 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2009, 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. |
类似零件编号 - CDC421A156RGET |
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类似说明 - CDC421A156RGET |
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