Datasheet 搜索 > 微控制器 > ST Microelectronics（意法半导体） > STM32F372V8H6 数据手册 > STM32F372V8H6 开发手册 5/28 页
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STM32F372V8H6 开发手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
微控制器
封装:
BGA-100
描述:
STMICROELECTRONICS STM32F372V8H6 微控制器, 32位, 浮点单元, ARM 皮质-M4F, 72 MHz, 64 KB, 16 KB, 100 引脚, BGA
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典型应用电路图在P8P19P20P21P22P23P24P25P26
原理图在P5P22P24
应用领域在P28
型号编号列表在P1
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STM32F372V8H6数据手册
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AN4207 Basics of sigma-delta converters
Doc ID 023945 Rev 1 5/28
1 Basics of sigma-delta converters
Sigma-delta converters, also known as oversampling converters, consist of two basic
circuits: a modulator and a digital filter (Figure 1). In the modulator, the input signal is added
to the negative feedback signal from the digital to analog converter (DAC). The signal’s
difference, after passing through the integrating circuit, reaches the input of the comparator
(1-bit ADC), where it is compared to the reference voltage (the comparator works as a 1-bit
quantizer). The input signal from the comparator (1-bit ADC) controls the 1-bit converter and
reaches the input of the digital filter, which decreases flowability and transforms the 1-bit
stream into 16-bit words. The used filter topology that ensures the low-pass stage is Sinc³.
Figure 1. Block diagram of a sigma-delta analog to digital converter
1-bit ADC
1-bit DAC
Digital filter
&
Decimator
Vin
1-bit stream
MSv31135V1
16-bit data
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