Serial Input, Voltage Output
12-/14-Bit Digital-to-Analog Converters
AD5530/AD5531
FUNCTIONAL BLOCK DIAGRAM
FEATURES
V
V
DD
SS
Pin-compatible 12-, 14-bit digital-to-analog converters
Serial input, voltage output
Maximum output voltage range of 10 V
Data readback
3-wire serial interface
Clear function to a user-defined voltage
Power-down function
AD5530/AD5531
REFIN
12-/14-BIT
DAC
R
R
V
OUT
R
R
REFAGND
LDAC
RBEN
DUTGND
CLR
DAC REGISTER
Serial data output for daisy-chaining
16-lead TSSOP
POWER-DOWN
CONTROL LOGIC
PD
SDIN
SHIFT REGISTER
SCLK SYNC
APPLICATIONS
GND
SDO
Industrial automation
Figure 1.
Automatic test equipment
Process control
General-purpose instrumentation
GENERAL DESCRIPTION
The AD5530/AD5531 are single 12- and 14-bit (respectively)
serial input, voltage output digital-to-analog converters (DAC).
The DAC output is buffered by a gain of two amplifier and
LDAC
referenced to the potential at DUTGND.
update the output of the DAC asynchronously. A power-down
PD
can be used to
They utilize a versatile 3-wire interface that is compatible with
SPI®, QSPI™, MICROWIRE™, and DSP interface standards. Data
is presented to the part in a 16-bit serial word format. Serial
data is available on the SDO pin for daisy-chaining purposes.
Data readback allows the user to read the contents of the DAC
register via the SDO pin.
pin ( ) allows the DAC to be put into a low power state, and
CLR
a
pin allows the output to be cleared to a user-defined
voltage, the potential at DUTGND.
The AD5530/AD5531 are available in 16-lead TSSOP.
Rev. B
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