STM32W108HB datasheet(130/179 Pages) STMICROELECTRONICS

Part #	STM32W108HB

Description	High-performance, IEEE 802.15.4 wireless system-on-chip

PDF	179 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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130 / 179 page

Analog-to-digital converter

STM32W108CB, STM32W108HB

130/179

Doc ID 16252 Rev 2

Analog-to-digital converter

The STM32W108 ADC is a first-order sigma-delta converter with the following features:

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Resolution of up to 12 bits

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Sample times as fast as 5.33 µs (188 kHz)

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Differential and single-ended conversions from six external and four internal sources

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Two voltage ranges (differential): -VREF to +VREF, and –VDD_PADS to +VDD_PADS

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Choice of internal or external VREF: internal VREF may be output

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Digital offset and gain correction

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Dedicated DMA channel with one-shot and continuous operating modes

ADC block diagram shows the basic ADC structure.

Figure 46.

ADC block diagram

While the ADC Module supports both single-ended and differential inputs, the ADC input

stage always operates in differential mode. Single-ended conversions are performed by

connecting one of the differential inputs to VREF/2 while fully differential operation uses two

external inputs.

STM32W108HB Datasheet(PDF) 130 Page - STMicroelectronics