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DAC7631 Datasheet(PDF) 18 Page - Texas Instruments

No. de pieza DAC7631
Descripción Electrónicos  Serial Input, 16-Bit, Voltage Output DIGITAL-TO-ANALOG CONVERTER
PDF  24 Pages
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Fabricante Electrónico  TI2 [Texas Instruments]
Página de inicio  https://www.ti.com
Logo TI2 - Texas Instruments

DAC7631 Datasheet(HTML) 18 Page - Texas Instruments

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®
18
DAC7631
Figure 16 shows a DAC7631 in a 4mA to 20mA current
output configuration. The output current can be determined
by Equation 3:
I
VV
N
V
OUT =




+ 
25
05
125
65 536
05
125
.– .
•
,
.
ΩΩ
(3)
At full-scale, the output current is 16mA, plus the 4mA, for
the zero current. At zero scale the output current is the offset
current of 4mA (0.5V/125
Ω).
FIGURE 16. 4-to-20mA Digitally Controlled Current Source (1/2 DAC7631).
Reset DAC Registers
Chip Select
Load
DGND
V
DD
SDI
CLK
CS
V
CC
I
OUT
125
Ω
V
PROGRAMMED
AGND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DAC7631
OPA2350
+V
+V
+2.5V
V
REFH Sense
V
REFH
V
REFL Sense
V
REFL
SDO
V
SS
V
OUT Sense
V
OUT
NC
RSTSEL
RST
LOAD
Serial Data In
Clock
Load DAC Registers
LDAC
Serial Data Out
+
0.1
µF1µF
+5V
20k
Ω
80k
Ω
100
Ω
2200pF
2200pF
1000pF
1000pF
100
Ω



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