EVAL-AD5541/42EB Analog Devices Inc, EVAL-AD5541/42EB Datasheet - Page 15

BOARD EVAL FOR AD5541/42

EVAL-AD5541/42EB

Manufacturer Part Number
EVAL-AD5541/42EB
Description
BOARD EVAL FOR AD5541/42
Manufacturer
Analog Devices Inc
Datasheet

Specifications of EVAL-AD5541/42EB

Number Of Dac's
1
Number Of Bits
16
Outputs And Type
1, Single Ended
Sampling Rate (per Second)
1.5M
Data Interface
Serial
Settling Time
1µs
Dac Type
Voltage
Voltage Supply Source
Single
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
AD5541, AD5542
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
APPLICATIONS INFORMATION
OPTOCOUPLER INTERFACE
The digital inputs of the AD5541/AD5542 are Schmitt-triggered so
that they can accept slow transitions on the digital input lines.
This makes these parts ideal for industrial applications where it
may be necessary to isolate the DAC from the controller via
optocouplers. Figure 29 illustrates such an interface.
POWER
SCLK
DIN
CS
Figure 29. AD5541/AD5542 in an Optocoupler Interface
10kΩ
10kΩ
10kΩ
V
V
V
DD
DD
DD
REGULATOR
SCLK
CS
DIN
5V
AD5541/AD5542
GND
V
DD
V
OUT
10µF
0.1µF
Rev. B | Page 15 of 20
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 receives the CS signal at any one
time. The DAC addressed is determined by the decoder. There is
some digital feedthrough from the digital input lines. Using a
burst clock minimizes the effects of digital feedthrough on the
analog signal channels.
ADDRESS
ENABLE
CODED
SCLK
DIN
Figure 30. Addressing Multiple AD5541/AD5542s
EN
DECODER
DGND
V
DD
Figure 30
shows a typical circuit.
AD5541/AD5542
AD5541/AD5542
AD5541/AD5542
AD5541/AD5542
AD5541/AD5542
CS
DIN
SCLK
CS
DIN
SCLK
CS
DIN
SCLK
CS
DIN
SCLK
V
V
V
V
OUT
OUT
OUT
OUT

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