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Dmitriy Dmitriy
Associate II
Aug 8, 2019 12:08 PM UTC
Question

Low pass filter for STM32WB55Vx

The MLPF-WB55-01E3 filter is especially for STM32WB55Cx and STM32WB55Rx. Are there differences STM32WB55Cx, STM32WB55Rx and STM32WB55Vx (WLCSP 100L DIE 495 PITCH 0.4 ) of RF pins impedance? Can I use MLPF-WB55-01E3 for STM32WB55Vx?

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4 replies

Remi QUINTIN
ST Technical Moderator
Aug 8, 2019 1:21 PM UTC

Effectively, the RF output impedance for the STM32WB55Cx/STM32WB55Rx devices is different from the one for the STM32WB55Vx.

So, another filter for the STM32WB55Vx with the reference MLPF-WB55-02E3 will be available in a few weeks.

Dmitriy Dmitriy
Associate II
Aug 8, 2019 2:34 PM UTC

Will it have same pIn-out and package as the MLPF-WB55-01E3?

Remi QUINTIN
ST Technical Moderator
Aug 9, 2019 9:23 AM UTC

Yes, it is the same package and the same land pattern for the PCB assembly, only the RF measurements are slightly different.

The datasheet will be available in a few weeks.

Dmitriy Dmitriy
Associate II
Aug 9, 2019 10:22 AM UTC

Thank you very much!