CDC421A156

156.25MHz 全集成式固定频率低抖动晶振时钟发生器; • Single 3.3-V Supply\n• High-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer\n• Low Output Jitter: As low as 380 fs (RMS integrated between 10 kHz to 20 MHz)\n• Low Phase Noise at 312.5 MHz: \n• Less than -120 dBc/Hz at 10 kHz and -147 dBc/Hz at 10-MHz offset from carrier\n \n• Supports Crystal or LVCMOS Input Frequencies at 31.25 MHz, 33.33 MHz, and 35.42 MHz\n• Output Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and 312.5 MHz\n• Differential Low-Voltage Positive Emitter Coupled Logic (LVPECL) Outputs\n• Fully-Integrated Voltage-Controlled Oscillator (VCO): Runs from 1.75 GHz to 2.35 GHz\n• Typical Power Consumption: 300 mW\n• Chip Enable Control Pin\n• Available in 4-mm × 4-mm QFN-24 Package\n• ESD Protection Exceeds 2 kV (HBM)\n• Industrial Temperature Range: -40°C to +85°C \n• APPLICATIONS \n• Low-Cost, Low-Jitter Frequency Multiplier;

The CDC421Axxx 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 to 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 a phase-locked loop (PLL)-based frequency synthesizer. The output frequency (fOUT) is proportional to the frequency of the input crystal (fXTAL). The device operates in 3.3-V supply environment and is characterized for operation from -40°C to +85°C. The CDC421Axxx is available in a QFN-24 4-mm × 4-mm package. The CDC421Axxx differs from the CDC421xxx in the following ways: Device Startup The CDC421Axxx has an improved startup circuit to enable correct operation for all power-supply ramp times.

CDC421A156

Fully-Integrated, Fixed-Frequency, Low-Jitter Crystal Oscillator Clock Generator

CDC421A156RGER

Fully-Integrated, Fixed-Frequency, Low-Jitter Crystal Oscillator Clock Generator

CDC421A156RGET

Fully-Integrated, Fixed-Frequency, Low-Jitter Crystal Oscillator Clock Generator

CDC421A156RGER

Package：24-VFQFN 裸露焊盘；包装：卷带（TR） 类别：集成电路（IC） 时钟发生器，PLL，频率合成器 描述：IC CLK GEN 156.25MHZ 3.3V 24VQFN

CDC421A156RGET

Package：24-VFQFN 裸露焊盘；包装：卷带（TR） 类别：集成电路（IC） 时钟发生器，PLL，频率合成器 描述：IC CLK GEN 156.25MHZ 3.3V 24VQFN