Using a MCU with 12-bit ADC to collect data from 24-bit sensor?

Forum|Forum|3 years ago
November 2, 2022
3 replies
1067 views

I want to use a STM32WB55CG with a 12-bit ACD to collect sensor data from ADS1292R (24-bit ECG sensor) and MAX86150 (19-bit PPG sensor).

Short question: Is this possible?

If so: Any suggestions on how to do so? Do need some external component?

This topic has been closed for replies.

Peter BENSCH

ST Technical Moderator

Yes, that should be possible.The two devices are connected via SPI and I2C respectively, which should not require any additional devices. However, TI sometimes has its own ideas about the format of the SPI transmission.

Regards

/Peter

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Piranha

Principal III

MCU's ADC has nothing to do with those other devices, with which you communicate through SPI, I2C or other digital connections.

Tesla DeLorean

Guru

>> Any suggestions on how to do so? Do need some external component?

If the formats don't conform to the function/expectations of the on-board peripherals, you can presumably use the GPIO's to emulate interactions at some lower bandwidth.

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