поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

Preview PDF HTML

MCP4822-E/MS датащи(PDF) 25 Page - Microchip Technology

номер детали MCP4822-E/MS
подробное описание детали  12-Bit DACs with Internal VREF and SPI??Interface
PDF  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4822-E/MS датащи(HTML) 25 Page - Microchip Technology

Back Button MCP4822-E/MS Datasheet HTML 21Page - Microchip Technology MCP4822-E/MS Datasheet HTML 22Page - Microchip Technology MCP4822-E/MS Datasheet HTML 23Page - Microchip Technology MCP4822-E/MS Datasheet HTML 24Page - Microchip Technology MCP4822-E/MS Datasheet HTML 25Page - Microchip Technology MCP4822-E/MS Datasheet HTML 26Page - Microchip Technology MCP4822-E/MS Datasheet HTML 27Page - Microchip Technology MCP4822-E/MS Datasheet HTML 28Page - Microchip Technology MCP4822-E/MS Datasheet HTML 29Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 25 / 36 page
background image
© 2005 Microchip Technology Inc.
DS21953A-page 25
MCP4821/MCP4822
6.9
Building A Programmable Current
Source
Example 6-6 illustrates a variation on a voltage follower
design where a sense resistor is used to convert the
DAC’s voltage output into a digitally-selectable current
source.
Adding the resistor network from Example 6-2 would
be advantageous in this application. The smaller
RSENSE is, the less power dissipated across it.
However, this also reduces the resolution that the
current can be controlled with. The voltage divider, or
“window”, DAC configuration would allow the range to
be reduced, thus increasing resolution around the
range of interest. When working with very small sensor
voltages, plan on eliminating the amplifier's offset error
by storing the DAC's setting under known sensor
conditions.
EXAMPLE 6-6:
Digitally-Controlled Current
Source.
MCP482X
Rsense
Ib
Load
IL
VDD
SPI™
3
VCC+
VCC–
VOUT
G = Gain select (1x or 2x)
D = Digital value of DAC (0 – 4096)
I
L
V
OUT
R
se nse
---------------
β
β 1
+
------------
×
=
V
OUT
2.048V G
D
2
12
-------
⋅
=
I
b
I
L
β
----
=



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


датащи скачать

Go To PDF Page


ссылки URL



Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   Ссылка на техническое описание    |   обмен ссыками   |   поиск по производителю
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