전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

INA821 데이터시트(PDF) 19 Page - Texas Instruments

Click here to check the latest version.
부품명 INA821
상세설명  INA821 35-關V Offset, 7-nV/?숰z Noise, Low-Power, Precision Instrumentation Amplifier
PDF  45 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

INA821 데이터시트(HTML) 19 Page - Texas Instruments

Back Button INA821 Datasheet HTML 15Page - Texas Instruments INA821 Datasheet HTML 16Page - Texas Instruments INA821 Datasheet HTML 17Page - Texas Instruments INA821 Datasheet HTML 18Page - Texas Instruments INA821 Datasheet HTML 19Page - Texas Instruments INA821 Datasheet HTML 20Page - Texas Instruments INA821 Datasheet HTML 21Page - Texas Instruments INA821 Datasheet HTML 22Page - Texas Instruments INA821 Datasheet HTML 23Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 45 page
background image
R1
25 k
RB
VB
+VS
-VS
+VS
-VS
+VS
-VS
+VS
-VS
+VS
-VS
Super-
NPN
Super-
NPN
RG
(External)
+VS
-VS
Overvoltage
Protection
Overvoltage
Protection
RB
-IN
+IN
REF
OUT
Q1
Q2
A1
A2
A3
+VS
IB Cancellation
IB Cancellation
R2
25 k
40 k
40 k
40 k
40 k
Copyright © 2017, Texas Instruments Incorporated
RG
RG
19
INA821
www.ti.com
SBOS893D – AUGUST 2018 – REVISED JUNE 2020
Product Folder Links: INA821
Submit Documentation Feedback
Copyright © 2018–2020, Texas Instruments Incorporated
8 Detailed Description
8.1 Overview
The INA821 is a monolithic precision instrumentation amplifier that incorporates a current-feedback input stage
and a four-resistor difference amplifier output stage. The functional block diagram in the next section shows how
the differential input voltage is buffered by Q1 and Q2 and is forced across RG, which causes a signal current to
flow through RG, R1, and R2. The output difference amplifier, A3, removes the common-mode component of the
input signal and refers the output signal to the REF pin. The VBE and voltage drop across R1 and R2 produces
output voltages on A1 and A2 that are approximately 0.8 V lower than the input voltages.
Each input is protected by two field-effect transistors (FETs) that provide a low series resistance under normal
signal conditions, and preserve excellent noise performance. When excessive voltage is applied, these
transistors limit input current to approximately 8 mA.
8.2 Functional Block Diagram



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


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