CC1125: 401~405MHz support

Albin Zhang

Expert 6060 points

Part Number: CC1125

Hi,

my customer is making a DMR system. the RX band is 401~405MHz.

looks both of datasheet and SRF recommended setting can't support this band.

is there a way to enable this band?

BR. Albin

over 1 year ago

+1 ZC over 1 year ago

TI__Mastermind 18335 points

Hi Albin,

The replies by TER are applicable here as well: https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/767430/cc1125-usable-frequency-band

Also the replies by Sverre in this thread (the reason is the same): https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/653379/cc1310-frequency-bands-and-errata-sheet

Unfortunately this band is not possible using the CC1125 due to the synth/VCO, with the possible LO divider settings limiting the frequency tuning range.

Has the customer investigated our CC13xx devices? Their datasheets show that this band is supported with those devices.

Regards,

Zack

Sub-1 GHz

Sub-1 GHz forum

CC1125: 401~405MHz support