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MCP4728 датащи(PDF) 55 Page - Microchip Technology

номер детали MCP4728
подробное описание детали  12-Bit, Quad Digital-to-Analog Converter with EEPROM Memory
PDF  66 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4728 датащи(HTML) 55 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
DS22187C-page 55
MCP4728
FIGURE 7-4:
Sequential Write Command for Setting Test Points in Figure 7-3.
Expected Output Voltage at Each Channel:
V
OUT AVDD
D
n
4096
------------
V
DD
2048
4096
------------
V
DD
2
-----------
=
×
=
×
V
()
=
V
OUT BVDD
D
n
4096
------------
V
DD
4095
4096
------------
V
DD
LSB
–
()
V
()
=
×
=
×
=
V
OUT CVREF
D
n
4096
------------ G
x
2.048
2048
4096
------------
× 2
2.048
V
()
=
×
=
×
=
V
OUT DVREF
D
n
4096
------------ G
x
2.048
4095
4096
------------
× 24.096
V
()
=
×
=
×
=
S 11000000 A 0101000
0 A 00001000 A 00000000 A
1st Byte
Channel A as
Selecting
Sequential Write
Command
Device Addressing
Dn = 211 = 2048
UDAC VREF
ACK
(MCP4728)
GX
R/W
Update DAC A Input Register at this ACK pulse.
Starting Channel
0000111
1 A 11111111 A
ACK
(MCP4728)
VREF
GX
Dn = 4095
10011000 A 00000000 A
ACK
(MCP4728)
VREF
GX
Dn = 2048
Update DAC B Input Register at this ACK pulse.
Update DAC C Input Register at this ACK pulse.
10011111 A 11111111 A P
ACK
(MCP4728)
VREF
GX
Dn = 4095
Update DAC D Input Register at this ACK pulse.
Stop
Start



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