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參數(shù)資料
| 型號： | AD5541LR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 5 V, Serial-Input Voltage-Output, 16-Bit DACs |
| 中文描述： | SERIAL INPUT LOADING, 1 us SETTLING TIME, 16-BIT DAC, PDSO8 |
| 封裝： | MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大小： | 186K |
| 代理商： | AD5541LR |
–12–
C
P
AD5541/AD5542
REV. A
APPLICATIONS
Optocoupler interface
The digital inputs of the AD5541/AD5542 are Schmitt-
triggered, so they can accept slow transitions on the digital input
lines. This makes these parts ideal for industrial applications
where it may be necessary that the DAC is isolated from the
controller via optocouplers. Figure 25 illustrates such an interface.
SCLK
DIN
CS
AD5541/AD5542
DIN
CS
SCLK
V
DD
POWER
5V
REGULATOR
GND
10
m
F
10k
V
V
OUT
10k
V
10k
V
0.1
m
F
V
DD
V
DD
V
DD
Figure 25. AD5541/AD5542 in an Optocoupler Interface
Decoding Multiple AD5541/AD5542s
The
CS
pin of the AD5541/AD5542 can be used to select one
of a number of DACs. All devices receive the same serial clock
and serial data, but only one device will receive the
CS
signal at
any one time. The DAC addressed will be determined by the
decoder. There will be some digital feedthrough from the digital
input lines. Using a burst clock will minimize the effects of digi-
tal feedthrough on the analog signal channels. Figure 26 shows a
typical circuit.
ENABLE
DIN
SCLK
DGND
CODED
ADDRESS
DECODER
V
DD
EN
AD5541/AD5542
CS
DIN
SCLK
V
OUT
AD5541/AD5542
CS
DIN
SCLK
V
OUT
AD5541/AD5542
CS
DIN
SCLK
V
OUT
AD5541/AD5542
CS
DIN
SCLK
V
OUT
Figure 26. Addressing Multiple AD5541/AD5542s
14-Lead SO
(R-14)
14
8
7
1
0.2440 (6.20)
0.2284 (5.80)
0.1574 (4.00)
0.1497 (3.80)
PIN 1
0.3444 (8.75)
0.3367 (8.55)
0.050 (1.27)
BSC
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0688 (1.75)
0.0532 (1.35)
8
8
0
8
0.0196 (0.50)
0.0099 (0.25)
3
45
8
0.0500 (1.27)
0.0160 (0.41)
0.0099 (0.25)
0.0075 (0.19)
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Lead SO
(SO-8)
8
5
4
1
0.1968 (5.00)
0.1890 (4.80)
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.1574 (4.00)
0.1497 (3.80)
0.0500 (1.27)
BSC
0.0688 (1.75)
0.0532 (1.35)
SEATING
PLANE
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
0.0098 (0.25)
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
8
8
0
8
0.0196 (0.50)
0.0099 (0.25)
3
45
8
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