Remote Tuner Architecture Using Renesas R-Car H3 SoC by Maxim

MAX2175 Remote Tuner Solution Reduces Cables and Simplifies Vehicle Head Unit Design

Maxim’s remote tuner architecture is scalable—you can easily add additional tuners for background scan and phase diversity without changing the head unit design. Learn more about Maxim’s Automotive Solutions at

Traditional automotive radio head units are complex as they must accommodate multiple tuners and require multiple cables from the antennas. Heat generated by the concentration of electronics may require the use of heatsinks and degrade reliability. The received analog signals pick up noise as they travel from the antenna to the head unit. Maxim’s remote tuner architecture simplifies head unit design while improving radio signal quality and reducing cost, weight, and power consumption. Tuners are located close to the antennas. Received signals are serialized and sent to the head unit over a single coax cable, which also provides I2C communication and power. With Maxim’s RF to Bits® radio tuner IC, the baseband processing can be done on the Renesas R-Car H3 SoC using software. This software-defined radio (SDR) approach enables flexible implementations by eliminating the need for a dedicated baseband processor. Any worldwide radio standard can be supported via a change in the software.
Learn more about Maxim’s remote tuner architecture at


  • Simplification of head unit
  • Enhanced radio performance
  • Design flexibility and scalability
  • Reduction of cables
  • Low MIPS: SDR utilizes less than 1 CORE
  • Support for AM/FM/FM-Diversity/DAB-MRC


  • MAX2175 RF to Bits automotive radio tuner
  • MAX96711 14-bit GMSL serializer
  • MAX96708 14-bit GMSL deserializer
  • MAX15027 1A, low-dropout linear regulator
  • MAX20002 36V, 2A, synchronous buck converter