Maxim Integrated MAX2171ETL+ RF to Bits Tuner

The MAX2171ETL+ from Maxim Integrated is a highly integrated RF to Bits® tuner designed for use in digital audio broadcast (DAB) applications, including FM phase modulation and band III. This advanced tuner is part of Maxim's commitment to providing cutting-edge solutions for the radio market, ensuring superior signal quality and ease of integration for designers.

At the heart of the MAX2171ETL+ is a sophisticated architecture that combines a low-IF digital processing implementation with a high-performance RF front-end. This integration results in a compact, power-efficient solution that simplifies the design process for digital radio systems. The device is capable of receiving signals in the frequency range of 168MHz to 240MHz for band III and 1452MHz to 1492MHz for L-band, covering the majority of DAB/DAB+/DMB applications.

The MAX2171ETL+ offers exceptional performance with its fully integrated VCO, PLL, LNA, mixers, IF filtering, and ADCs. This level of integration minimizes the need for external components, reducing the bill of materials (BOM) and saving valuable board space. The device is packaged in a compact 40-pin TQFN (6mm x 6mm) with an exposed pad, which aids in thermal management and allows for a more streamlined PCB layout.

One of the key features of the MAX2171ETL+ is its support for I2S digital audio output, which provides a direct interface to most modern DSPs and SoCs without the need for additional DACs. This, along with its programmable baseband filter bandwidths and automatic gain control (AGC), ensures that the MAX2171ETL+ can deliver high-quality audio while maintaining flexibility in various system designs.

The device also includes advanced features such as a fully integrated RF tracking filter, which helps in rejecting out-of-band interference and improving the overall signal quality. The MAX2171ETL+ is designed for low-power operation, making it an ideal choice for portable and automotive applications where power efficiency is critical.

Overall, the MAX2171ETL+ represents a robust, feature-rich solution for designers looking to incorporate DAB functionality into their products. With its high level of integration and performance, it stands as a testament to Maxim Integrated's expertise in radio-frequency and mixed-signal design.