SI2181-B60-GMR

The SI2181-B60-GMR is a use-optimized RF Demodulator developed by Silicon Laboratories. It helps bring increased accuracy in measurements, improved signal-to-noise ratio, and noise- and interference-free operation, especially in harsh RF environments.

Application Field

The SI2181-B60-GMR is mainly designed for receivers in wireless communications and industrial and consumer electronics applications. Specifically, it is applicable to cellular, non-cellular, wireless personal area networks (WPANs), Wi-Fi / WiMAX, mobility and Multi-point models. It is designed to handle RF modulated signals with wideband frequency ranges, typically 0.3 to 6GHz and beyond.

The SI2181-B60-GMR\'s unique combination of digital filtering and software control provide programmability and maximum flexibility in a robust radio architecture. Its embedded digital signal processing (DSP) technique allows greater flexibility in communications systems design. Its many features include in-band noise rejection, multi-mode frequency and time-domain demodulation, data logging, gain control, video noise reduction, improved adjacent channel interference and enhanced adjacent channel rejection.

In addition, its low power consumption significantly reduces RF circuit cost and energy consumption, making the SI2181-B60-GMR the ideal choice for embedded systems and portable applications.

Working Principle

The SI2181-B60-GMR incorporates a low-noise amplifier (LNA), a programmable frequency filter, and a demodulator. It has an optimized architecture that eliminates the need for an analog-to-digital converter (ADC) in many applications. The wideband LNA is integrated on the chip to provide good input signal power handling. This ensures low noise figures, increased sensitivity, improved rejection of interference, and noise-free operation.

The programmable filter provides fine control of the desired frequency response and allows for the implementation of digital tuning and calibration of the amplifier, filter, and mixer. At the same time, it can also filter out adjacent channel interference for improved performance.

The demodulator performs data demodulation. It can support a wide variety of modulation types including QPSK, MSK, OQPSK, FSK, and others. The SI2181-B60-GMR can provide low bit error rate measurements and enhanced adjacent channel rejection to ensure a high quality signal transmission. It also supports both frequency- and time-domain data demodulation.

The SI2181-B60-GMR is suitable for different types of RF applications and provides maximum flexibility in design. Its low power consumption, digital signal processing, and programmable filter provide a unique combination of benefits that are ideal for optimally designing wireless systems.