Electronic Components Datasheet Search
  British  ▼
ALLDATASHEET.CO.UK

X  

Preview PDF HTML

MCP4822-E/MS Datasheet(PDF) 23 Page - Microchip Technology

Part # MCP4822-E/MS
Description  12-Bit DACs with Internal VREF and SPI??Interface
PDF  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4822-E/MS Datasheet(HTML) 23 Page - Microchip Technology

Back Button MCP4822-E/MS Datasheet HTML 19Page - Microchip Technology MCP4822-E/MS Datasheet HTML 20Page - Microchip Technology 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 Next Button
Zoom Inzoom in Zoom Outzoom out
 23 / 36 page
background image
© 2005 Microchip Technology Inc.
DS21953A-page 23
MCP4821/MCP4822
6.7
Selectable Gain and Offset Bipolar
Voltage Output Using A Dual DAC
In some applications, precision digital control of the
output range is desirable. Example 6-4 illustrates how
to use the MCP482X family to achieve this in a bipolar
or single-supply application.
This circuit is typically used for linearizing a sensor
whose slope and offset varies.
The equation to design a bipolar “window” DAC would
be utilized if R3, R4 and R5 are populated.
EXAMPLE 6-4:
Bipolar Voltage Source with Selectable Gain and Offset.
MCP482X
VDD
R3
R4
R2
VO
MCP482X
VDD
R1
DACA (Gain Adjust)
DACB (Offset Adjust)
SPI™
3
R5
VCC+
Thevenin
Bipolar “Window” DAC using R4 and R5
G = Gain select (1x or 2x)
D = Digital value of DAC (0 – 4096)
0.1 µF
VCC–
AVSS = GND
VCC+
VCC–
V
OUTB
2.048V G
B
⋅
()
D
B
2
12
-------
=
VOUTA
VOUTB
V
OUTA
2.048V G
A
⋅
()
D
A
2
12
-------
=
V
IN+
V
OUTBR4
V
CC-R3
+
R
3
R
4
+
------------------------------------------------
=
V
O
V
IN+ 1
R
2
R
1
------
+
⎝⎠
⎛⎞
V
OUTA
R
2
R
1
------
⎝⎠
⎛⎞
–
=
Equivalent
V
45
V
CC+R4
V
CC-R5
+
R
4
R
5
+
--------------------------------------------
=
R
45
R
4R5
R
4
R
5
+
------------------
=
V
IN+
V
OUTBR45
V
45R3
+
R
3
R
45
+
-----------------------------------------------
=
V
O
V
IN+ 1
R
2
R
1
------
+
⎝⎠
⎛⎞
V
OUTA
R
2
R
1
------
⎝⎠
⎛⎞
–
=
Offset Adjust Gain Adjust
Offset Adjust Gain Adjust



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


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
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