Decoding Chip Suffix for Si47xx Broadcast Receivers
Silicon Labs produces a large line of FM+AM+WB+SW+LW all in one Receiver chips in a seemingly endless number of combinations
Some Popular Version:
Si4735-d60 – An FM/aM/sW/lW receiver with RBS and Digital Output
S-4734-d60, or B20, or C40 or …. Basically the Su4735 without RBS and Digital Output
Si4704-d60, or B20, or C40 or … FM Receiver
Si4731–d60, or B20, or C40 or … FM/aM Receiver with RBS
What does the suffix (D60 or B20 or C40) mean?
Basically the age of the chip design
The letter (D or B or C) is the DIE Revision, A-d, with D being the latest, the Die is used to define the silicon structure of the chip
The number (10, 20, 40, 60) is the Firmware, basically the options the chip will have out of the box
Si47xx-d60 is the latest Die Revision with the Latest Firmware, theoretically, later versions of the firmware have bug-fixed included, as well as newer features
Programming the chip is slightly different for each version of the firmware
The Firmware version has a big impact on price, typically the D60 chips are the most expensive, and the A10 chips are the least expensive
And of course there is an exception to every rule, Silicon Labs Si47xx Receiver line’s exception is the Si4732
The Si4732-a10 is equivalent to the D60 version, but not relabeled
Decoding Chip Suffix for Si47xx Broadcast Receivers
