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AN3137 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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AN3137 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
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1 / 42 page ![]() November 2012 Doc ID 16983 Rev 3 1/42 AN3137 Application note Analog-to-digital converter on STM8L and STM8AL devices: description and precision improvement techniques Introduction This application note describes the 12-bit analog-to-digital converter (ADC) embedded in the STM8L and STM8AL family microcontrollers. It offers a selection of hardware and software methods for improving the precision of this ADC. It is divided into the following sections: ■ The first section explains the internal design principle of the STM8L/STM8AL ADC. ■ The second section describes the ADC operation from the programmer’s point of view. ■ The final section lists the main types of errors that occur in ADCs and their sources. It describes some hardware and software methods for minimizing these errors. Firmware examples (source codes) are provided with this application note showing how to implement STM8L/STM8AL ADC routines for minimizing measurement errors. This document applies to the products listed in Table 1. Table 1. Applicable products Product family Part numbers Microcontrollers – STM8L05xxx – STM8L151C2/K2/G2/F2, STM8L151C3/K3/G3/F3 – STM8L151x4, STM8L151x6, STM8L151x8 – STM8L152x4, STM8L152x6, STM8L152x8 – STM8L162R8, STM8L162M8 – STM8AL313x, STM8AL314x, STM8AL316x – STM8AL3L4x, STM8AL3L6x www.st.com |
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