Decoding Chip Suffix for Si47xx Broadcast Receivers

Decoding Chip Suffix for Si47xx Broadcast Receivers

Return to Data Sheets and Programming guides for Silicon Labs Si47xx and Si48xx Series FM Radio 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

Return to Data Sheets and Programming guides for Silicon Labs Si47xx and Si48xx Series FM Radio Receivers


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