công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

Preview PDF HTML

AN2834 bảng dữ liệu(PDF) 35 Page - STMicroelectronics

tên linh kiện AN2834
Giải thích chi tiết về linh kiện  How to get the best ADC accuracy in STM32Fx Series and STM32L1 Series devices
PDF  45 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2834 bảng dữ liệu(HTML) 35 Page - STMicroelectronics

Back Button AN2834 Datasheet HTML 31Page - STMicroelectronics AN2834 Datasheet HTML 32Page - STMicroelectronics AN2834 Datasheet HTML 33Page - STMicroelectronics AN2834 Datasheet HTML 34Page - STMicroelectronics AN2834 Datasheet HTML 35Page - STMicroelectronics AN2834 Datasheet HTML 36Page - STMicroelectronics AN2834 Datasheet HTML 37Page - STMicroelectronics AN2834 Datasheet HTML 38Page - STMicroelectronics AN2834 Datasheet HTML 39Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 35 / 45 page
background image
DocID15067 Rev 2
35/45
AN2834
How to get the best ADC accuracy
44
3.4
High impedance source measurement
This section describes the ADC measurement behavior of STM32x ADC when a signal
source with high internal impedance is used. It explains how to design an application to
reach the requested precision and provides workarounds.
3.4.1
ADC input stage problem
The ADC in STM32x devices is a switched-capacitor ADC type. Switched capacitors work
also as sampling capacitors (see Section 1.1 for a detailed explanation).
When a signal comes from a voltage source with high internal impedance (for instance,
150 k
), an added error can be seen in measurement results. Error signals have also been
observed on the ADC input pin, as shown in Figure 33 (if the voltage source has zero
voltage: Uin = 0 V, Rin = 150 k, Cext = 0 pF):
Figure 31. Typical voltage source connection to ADC input
Figure 32. Noise observed on ADC input pin during ADC conversions
ADC input
ai17903
STM32
Uin
Rin
C ext
ADC input signal during conversion:
an ADC noise is injected to the input.
ai17904



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45


bảng dữ liệu tải về

Go To PDF Page


Link URL



Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Liên kết đến bảng dữ liệu    |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com