Si4732-A10 Digital CMOS AM/FM/SW/LW/RDS Receiver | Module | Chip

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Has Anyone Tried This Yet?

Silicon Labs Radio Innovation

A bit of a mouthful, this, isn't it? Quite a few of you have been in touch concerning this new chip/ radio/ receiver. Silicon Labs have the following text (see box) on their website/ spec sheet, and there are some posts on FB groups and radio fora. If you are using one of these or have one on order, let us know how you are getting on, and how this device compares to other radios, such as the Belka DX, the new Tecsun PL-368, and the various incarnations of the Malachite, all of which also offer a small-ish form factor.

 

“The Si4732-A10 digital CMOS AM/FM/SW/LW/RDS radio receiver IC integrates the complete broadcast tuner and receiver function from antenna input to digital audio output. The device leverages the Silicon Labs broadcast proven digital low-IF architecture, enabling a cost-effective digital audio platform for consumer electronic applications with high TDMA noise immunity, superior radio performance, and high fidelity audio power amplification. Offering unmatched integration and PCB space savings, the Si4732-A10 requires only a few external components and less than 15 mm2 of board area, excluding the antenna inputs. The Si4732-A10 AM/FM/SW/LW/RDS radio provides the space savings and low power consumption necessary for portable devices while delivering the high performance and design simplicity desired for all AM/FM/SW/LW/RDS solutions. Leveraging Silicon Laboratories' proven and patented Si4700/01 FM tuner's digital low intermediate frequency (low-IF) receiver architecture, the Si4732-A10 delivers superior RF performance and interference rejection in the AM, FM, SW, and LW bands. The high level of integration and complete system production test simplifies design-in, increases system quality, and improves reliability and manufacturability.”

 

Selection of Claimed Key Features

 

  • Worldwide FM band support (64–108 MHz); Worldwide AM band support (520–1710 kHz)
  • SW band support (2.3–26.1 MHz);  LW band support (153–279 kHz)
  • Excellent real-world performance with integrated AM/FM/SW/LW/RDS
  • Integrated VCO;  Advanced AM/FM seek tuning
  • Automatic frequency control (AFC); Automatic gain control (AGC)
  • Digital FM stereo decoder;  Programmable de-emphasis; Advanced Audio Processing
  • Seven selectable AM channel filters; AM/FM/SW/LW digital tuning
  • EN55020 compliant; no manual alignment necessary
  • Programmable reference clock; adjustable soft mute control
  • RDS/RBDS processor; digital audio out

 

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(Source: Silicon Laboratories | SWLing Post)

 

https://swling.com/blog/2021/04/any-thoughts-on-this-inexpensive-si4732-based-receiver/

https://www.silabs.com/documents/public/data-shorts/Si4732-A10-short.pdf