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AD5552 Datasheet

5 V/ Serial-Input Voltage-Output/ 14-Bit DACs

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5 V, Serial-Input
Voltage-Output, 14-Bit DACs
AD5551/AD5552
FEATURES
Full 14-Bit Performance
5 V Single Supply Operation
Low Power
Fast Settling Time
Unbuffered Voltage Output Capable of Driving 60 k
Loads Directly
SPI™/QSPI™/MICROWIRE™-Compatible Interface
Standards
Power-On Reset Clears DAC Output to 0 V (Unipolar
Mode)
Schmitt Trigger Inputs for Direct Optocoupler Interface
APPLICATIONS
Digital Gain and Offset Adjustment
Automatic Test Equipment
Data Acquisition Systems
Industrial Process Control
GENERAL DESCRIPTION
The AD5551 and AD5552 are single, 14-bit, serial input, voltage
output DACs that operate from a single 5 V ± 10% supply.
The AD5551 and AD5552 utilize a versatile 3-wire interface that
is compatible with SPI, QSPI, MICROWIRE, and DSP inter-
face standards.
These DACs provide 14-bit performance without any adjust-
ments. The DAC output is unbuffered, which reduces power
consumption and offset errors contributed by an output buffer.
With an external op amp the AD5552 can be operated in bipo-
lar mode generating a ± VREF output swing. The AD5552 also
includes Kelvin sense connections for the reference and analog
ground pins to reduce layout sensitivity. For higher precision
applications, please refer to 16-bit DACs AD5541, AD5542,
and AD5544.
The AD5551 and AD5552 are available in an SO package.
FUNCTIONAL BLOCK DIAGRAMS
VREF
AD5551
VDD
14-BIT DAC
VOUT
CS
DIN
SCLK
CONTROL
LOGIC
14-BIT DATA LATCH
SERIAL INPUT REGISTER
AGND
DGND
VREFF
VREFS
CS
LDAC
SCLK
DIN
AD5552
RINV
CONTROL
LOGIC
VDD
RFB
14-BIT DAC
14-BIT DATA LATCH
SERIAL INPUT REGISTER
RFB
INV
VOUT
AGNDF
AGNDS
DGND
PRODUCT HIGHLIGHTS
1. Single Supply Operation.
The AD5551 and AD5552 are fully specified and guaranteed
for a single 5 V ± 10% supply.
2. Low Power Consumption.
Typically 1.5 mW with a 5 V supply.
3. 3-Wire Serial Interface.
4. Unbuffered output capable of driving 60 kloads, which
reduces power consumption as there is no internal buffer
to drive.
5. Power-On Reset Circuitry.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
Analog Devices
Analog Devices



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