微波合成器 STW81200

RF 无线电频率PLL频率

Combining high performance, high integration, wideband and multi-band capabilities, ST's RF synthesizers represent a robust and effective alternative to discrete, expensive and bulky PLL and VCO solutions. Reducing RF BOM and footprint by up to 60% while increasing reliability, these synthesizers are a perfect fit for high-performance applications such as GSM/3G/LTE base stations, microwave links, cable modems, satellite, broadcasting, instrumentation, security, defense and test equipment. A single STW81200 wide-band RF synthesizer is able to cover frequencies from 46.875 MHz to 6 GHz. With low noise VCOs and an integer and fractional-N PLL architecture for supporting multi-standard SDR applications, the STW81200 also integrates low-noise LDOs, internally-matched broadband RF outputs and supports an external crystal oscillator to further reduce the number of external components. The STW81200’s flexible power supply options ensure the best tradeoff between performance and consumption. Key benefits: High level of integration (cost savings on BOM) - Low-noise, high-PSRR LDO voltage regulators - Internally-matched broadband RF outputs High performance: - Normalized in-band phase noise floor:-227 dBc/Hz - VCO phase noise: -135 dBc/Hz @ 1 MHz offset, 4.0 GHz carrier