STMicroelectronics new integrated RF synthesizer with Microwave Function

STMicroelectronics days before the launch of the new integrated radio frequency synthesizer, a new embedded product VCO, ST said, comprehensive phase noise is lowest in the industry, and reached the highest level of bandwidth on the market. The ST synthesizer is the only product in the market where the output frequency is only over 3GHz. The advent of STW81101 and STW81102 meets the growing needs of mobile base stations, satellite communications and cable TV equipment manufacturers for the space size and cost effectiveness of RF application solutions.

Frequency synthesizer is the basis of radio design, and its performance has a great influence on the whole system. The phase noise minimization and the maximization of the broadband frequency range are the main requirements of today's communication devices for signal source components.

Located in the cellular network infrastructure, point-to-point radio, cable television and satellite system for wireless transceiver applications, ST, STW81101 and STW81102 in integer division ratio (N) has the best performance of the phase noise monolithic RF synthesizer. Phase noise measurement value at 0.2 RMS 1GHz (RMS), at 2GHz of 0.5 degrees RMS, at 4GHz of 1.3 RMS, frequency step 200kHz. Random signal frequency fluctuation excellent inhibition ability, provides more space for the designers; the lower phase noise is to meet the stringent requirements of the system manufacturers to minimize data and voice transmission bit error rate in the.

ST's new RF synthesizer provides customers with multi band features and the widest frequency range. The integration of embedded voltage controlled oscillators (VCO) with the central frequency auto alignment and multiple output options enables the new device to operate in multiple bands from 750MHz to 4.65GHz. Now, as long as the equipment provider to multi band wireless applications such as four frequency transceiver base station to install a ST synthesizer to meet the performance requirements, without having to install a dedicated synthesizer for each frequency range. In addition, STW81101 and STW81102 are the only monolithic synthesizers in today's 3GHz and 4GHz band applications such as WiFi and WiMAX base stations or fixed radio links.

Dual digital interface to further enhance the functionality of the STW8110x series of products, support multiple devices can be connected to the I2C protocol, the new serial to parallel high-speed (SPI) interface bus.

Monolithic RF synthesizer ST with world leading the company's unique BiCMOS SiGe manufacturing process, its performance and reliability are beyond competing solutions, compared with traditional discrete devices, material cost and occupying the size reduction of up to 60%.

"ST improves the performance benchmark of the integrated RF synthesizer to meet the needs of the system manufacturer for higher flexibility and integration solutions." ST wireless communications infrastructure RF product marketing manager Guillaume Pertinant said, at the same time, we are the first in the market for the development of the emerging high-speed microwave applications launched a single-chip synthesizer manufacturers."

STW81101 and STW81102 are pin compatible with the previous generation product (STW81100) pin, the chip package is available in a QFN-28 leadless package. The evaluation tool kit includes the evaluation board, STWPLLSim PLL filter design and noise simulation software, programming GUI (graphical user interface) and application board design guidelines.

The new STWPLLSim is a powerful tool for interactive, user friendly, can quickly and accurately design the PLL, from the advanced parameters (such as loop bandwidth and phase margin) to optimize the STW8110x device. The accuracy of the noise modeling ensures the design of the first loop filter in a short period of time.