STM32W108HBU6 STMicroelectronics, STM32W108HBU6 Datasheet - Page 156

• Manufacturer Part Number: STM32W108HBU6
• Manufacturer: STMicroelectronics

Specifications of STM32W108HBU6

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Processing Unit: Microprocessor
• Operating Supply Voltage (min): 1.18V
• Operating Supply Voltage (typ): 1.25V
• Operating Supply Voltage (max): 1.32V
• Package Type: VFQFPN EP
• Pin Count: 40
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Analog-to-digital converter
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Analog-to-digital converter
The STM32W108 analog-to-digital converter (ADC) is a first-order sigma-delta converter
with the following features:
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Figure 50
Figure 50. 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.
In high voltage mode, input buffers (with 0.25 gain only) may experience long term drift of its
input offset voltage that affects ADC accuracy. In these cases, only the 1.2V input range
mode of the ADC should be used. If measurement of signals >1.2V is required, then
external attenuation should be added.
Resolution of up to 12 bits
Sample times as fast as 5.33 µs (188 kHz)
Differential and single-ended conversions from six external and four internal sources
Two voltage ranges (differential): -VREF to +VREF, and –VDD_PADS to +VDD_PADS
Choice of internal or external VREF: internal VREF may be output
Digital offset and gain correction
Dedicated DMA channel with one-shot and continuous operating modes
shows the basic ADC structure.
Doc ID 16252 Rev 7
STM32W108CB, STM32W108HB