전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

ADC0809CCN 데이터시트(PDF) 10 Page - Texas Instruments

부품명 ADC0809CCN
상세설명  8-Bit Compatible A/D Converters with 8-Channel Multiplexer
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

ADC0809CCN 데이터시트(HTML) 10 Page - Texas Instruments

Back Button ADC0809CCN Datasheet HTML 6Page - Texas Instruments ADC0809CCN Datasheet HTML 7Page - Texas Instruments ADC0809CCN Datasheet HTML 8Page - Texas Instruments ADC0809CCN Datasheet HTML 9Page - Texas Instruments ADC0809CCN Datasheet HTML 10Page - Texas Instruments ADC0809CCN Datasheet HTML 11Page - Texas Instruments ADC0809CCN Datasheet HTML 12Page - Texas Instruments ADC0809CCN Datasheet HTML 13Page - Texas Instruments ADC0809CCN Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 19 page
background image
ADC0808-N, ADC0809-N
SNAS535H – OCTOBER 1999 – REVISED MARCH 2013
www.ti.com
APPLICATIONS INFORMATION
OPERATION
RATIOMETRIC CONVERSION
The ADC0808, ADC0809 is designed as a complete Data Acquisition System (DAS) for ratiometric conversion
systems. In ratiometric systems, the physical variable being measured is expressed as a percentage of full-scale
which is not necessarily related to an absolute standard. The voltage input to the ADC0808 is expressed by the
equation
VIN= Input voltage into the ADC0808
Vfs= Full-scale voltage
VZ= Zero voltage
DX= Data point being measured
DMAX= Maximum data limit
DMIN= Minimum data limit
(1)
A good example of a ratiometric transducer is a potentiometer used as a position sensor. The position of the
wiper is directly proportional to the output voltage which is a ratio of the full-scale voltage across it. Since the
data is represented as a proportion of full-scale, reference requirements are greatly reduced, eliminating a large
source of error and cost for many applications. A major advantage of the ADC0808, ADC0809 is that the input
voltage range is equal to the supply range so the transducers can be connected directly across the supply and
their outputs connected directly into the multiplexer inputs, (Figure 11).
Ratiometric transducers such as potentiometers, strain gauges, thermistor bridges, pressure transducers, etc.,
are suitable for measuring proportional relationships; however, many types of measurements must be referred to
an absolute standard such as voltage or current. This means a system reference must be used which relates the
full-scale voltage to the standard volt. For example, if VCC=VREF=5.12V, then the full-scale range is divided into
256 standard steps. The smallest standard step is 1 LSB which is then 20 mV.
RESISTOR LADDER LIMITATIONS
The voltages from the resistor ladder are compared to the selected into 8 times in a conversion. These voltages
are coupled to the comparator via an analog switch tree which is referenced to the supply. The voltages at the
top, center and bottom of the ladder must be controlled to maintain proper operation.
The top of the ladder, Ref(+), should not be more positive than the supply, and the bottom of the ladder, Ref(
−),
should not be more negative than ground. The center of the ladder voltage must also be near the center of the
supply because the analog switch tree changes from N-channel switches to P-channel switches. These
limitations are automatically satisfied in ratiometric systems and can be easily met in ground referenced systems.
Figure 12 shows a ground referenced system with a separate supply and reference. In this system, the supply
must be trimmed to match the reference voltage. For instance, if a 5.12V is used, the supply should be adjusted
to the same voltage within 0.1V.
Figure 11. Ratiometric Conversion System
10
Submit Documentation Feedback
Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: ADC0808-N ADC0809-N


유사한 부품 번호 - ADC0809CCN

제조업체부품명데이터시트상세설명
logo
National Semiconductor ...
ADC0809CCN NSC-ADC0809CCN Datasheet
264Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
logo
Micro Linear Corporatio...
ADC0809CCN MICRO-LINEAR-ADC0809CCN Datasheet
169Kb / 12P
   關P Compatible 8-Bit A/D Converter with 8-Channel Multiplexer
logo
National Semiconductor ...
ADC0809CCN NSC-ADC0809CCN Datasheet
394Kb / 16P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
ADC0809CCN NSC-ADC0809CCN Datasheet
348Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
logo
Texas Instruments
ADC0809CCN TI1-ADC0809CCN Datasheet
494Kb / 19P
[Old version datasheet]   ADC0808/ADC0809 8-Bit 關P Compatible A/D Converters with 8-Channel Multiplexer
More results

유사한 설명 - ADC0809CCN

제조업체부품명데이터시트상세설명
logo
National Semiconductor ...
ADC0808 NSC-ADC0808 Datasheet
264Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
ADC0808 NSC-ADC0808_07 Datasheet
394Kb / 16P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
ADC0808 NSC-ADC0808_95 Datasheet
348Kb / 14P
   8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
logo
Texas Instruments
ADC0816 TI1-ADC0816_17 Datasheet
539Kb / 18P
[Old version datasheet]   8-Bit Compatible A/D Converters with16-Channel Multiplexer
logo
National Semiconductor ...
ADC0816 NSC-ADC0816 Datasheet
245Kb / 13P
   8-Bit uP Compatible A/D Converters with 16-Channel Multiplexer
ADC0844 NSC-ADC0844 Datasheet
467Kb / 20P
   8-Bit uP Compatible A/D Converters with Multiplexer Options
logo
Texas Instruments
ADC0809CCN TI1-ADC0809CCN Datasheet
494Kb / 19P
[Old version datasheet]   ADC0808/ADC0809 8-Bit 關P Compatible A/D Converters with 8-Channel Multiplexer
logo
Micro Linear Corporatio...
ML2252 MICRO-LINEAR-ML2252 Datasheet
202Kb / 13P
   關P Compatible 8-Bit A/D Converters with 2- or 8-Channel Multiplexer
logo
Texas Instruments
ADC0808-N TI1-ADC0808-N_14 Datasheet
538Kb / 20P
[Old version datasheet]   ADC0808/ADC0809 8-Bit 關P Compatible A/D Converters with 8-Channel Multiplexer
logo
National Semiconductor ...
ADC0816 NSC-ADC0816_07 Datasheet
344Kb / 14P
   8-Bit 關P Compatible A/D Converters with 16-Channel Multiplexer
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
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