전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

AD8251ARMZ-R7 데이터시트(PDF) 22 Page - Analog Devices

부품명 AD8251ARMZ-R7
상세설명  10 MHz, 20 V/關s, G = 1, 2, 4, 8 iCMOS Programmable Gain Instrumentation Amplifier
PDF  25 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD8251ARMZ-R7 데이터시트(HTML) 22 Page - Analog Devices

Back Button AD8251ARMZ-R7 Datasheet HTML 17Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 18Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 19Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 20Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 21Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 22Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 23Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 24Page - Analog Devices AD8251ARMZ-R7 Datasheet HTML 25Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 22 / 25 page
background image
AD8251
Rev. B | Page 21 of 24
APPLICATIONS
DIFFERENTIAL OUTPUT
In certain applications, it is necessary to create a differential
signal. High resolution ADCs often require a differential input.
In other cases, transmission over a long distance can require
differential signals for better immunity to interference.
Figure 61 shows how to configure the AD8251 to output a
differential signal. An op amp, the AD817, is used in an
inverting topology to create a differential voltage. VREF sets the
output midpoint according to the equation shown in the figure.
Errors from the op amp are common to both outputs and are
thus common mode. Likewise, errors from using mismatched
resistors cause a common-mode dc offset error. Such errors are
rejected in differential signal processing by differential input
ADCs or instrumentation amplifiers.
When using this circuit to drive a differential ADC, VREF can be
set using a resistor divider from the ADC reference to make the
output ratiometric with the ADC.
SETTING GAINS WITH A MICROCONTROLLER
+15V
MICRO-
CONTROLLER
–15V
A0
A1
WR
+IN
–IN
10
μF0.1µF
10
μF0.1µF
REF
AD8251
+
–
DGND
DGND
Figure 60. Programming Gain Using a Microcontroller
+12V
–12V
A0
A1
WR
+IN
10
μF
0.1
μF
10
μF
0.1
μF
AD8251
REF
G = 1
0.1µF
4.99k
Ω
4.99k
Ω
AD817
0.1µF
+12V
–12V
VREF
0V
VOUTA = VIN + VREF
2
2
VOUTB = –VIN + VREF
+2.5V
–2.5V
0V
+2.5V
–2.5V
0V
TIME
AMPLITUDE
0V
TIME
AMPLITUDE
+5V
–5V
AMPLITUDE
10pF
+12V
–12V
VIN
+
–
+
–
DGND
DGND
Figure 61. Differential Output with Level Shift



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


데이터시트 다운로드

Go To PDF Page


링크 URL



ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   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