STW81101/02: Integrated RF synthesizer; Embedded voltage-controlled oscillator; Phase noise measurement is 0.2°RMS (root mean square) at 1GHz, 0.5°RMS at 2GHz, 1.3°RMS at 4GHz, with a frequency step of 200kHz; Can operate in multiple frequency bands from 750MHz to 4.65GHz; Supports IC protocol for connecting multiple devices; Has a high-speed (SPI) interface bus from serial to parallel; Uses BiCMOS SiGe manufacturing process; Pin-to-pin compatible with the previous generation product (STW81100); The device uses QFN-28 lead-free package. Typical applications of STW81101/02 include: 2.5G, 3G cellular architecture equipment; CATV equipment; Instrumentation and test equipment and other wireless communication systems.