AD5551_10 Datasheet, PDF (1/16 Pages) Analog Devices – 2.7 V to 5.5 V, Serial-Input, Voltage-Output, 14-Bit DACs

FEATURES
Full 14-bit performance
3 V and 5 V single supply operation
Low 0.625 mW power dissipation
1 μs settling time
Unbuffered voltage output capable of driving 60 kΩ
loads directly
SPI/QSPI/MICROWIRE-compatible interface standards
Power-on reset clears DAC output to 0 V (unipolar mode)
5 kV HBM ESD classification
APPLICATIONS
Digital gain and offset adjustment
Automatic test equipment
Data acquisition systems
Industrial process control
GENERAL DESCRIPTION
The AD5551/AD5552 are single, 14-bit, serial-input, voltage-
output DACs that operate from a single 2.7 V to 5.5 V supply.
The DAC output range extends from 0 V to VREF.
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
bipolar 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, refer to 16-bit DACs AD5541, AD5542,
and AD5544.
The AD5551/AD5552 utilize a versatile 3-wire interface that is
compatible with SPI, QSPI™, MICROWIRE™, and DSP interface
standards. The AD5551 and AD5552 are available in 8-lead and
14-lead SOIC packages.
2.7 V to 5.5 V, Serial-Input,
Voltage-Output, 14-Bit DACs
AD5551/AD5552
FUNCTIONAL BLOCK DIAGRAMS
V_REF 3
AD5551
V_DD
8
14-BIT DAC
1 V_OUT
2 AGND
CS 4
DIN 6
SCLK 5
CONTROL
LOGIC
AD5552
R_INV
V_REFF 6
V_REFS 5
14-BIT DATA LATCH
SERIAL INPUT REGISITER
7
DGND
Figure 1.
V_DD
14
R_FB
1 RFB
13 INV
14-BIT DAC
2 V_OUT
3 AGNDF
CS 7
LDAC 11
SCLK 8
DIN 10
CONTROL
LOGIC
14-BIT DATA LATCH
SERIAL INPUT REGISITER
12
DGND
Figure 2.
4 AGNDS
PRODUCT HIGHLIGHTS
1. Single Supply Operation.
The AD5551 and AD5552 are fully specified and
guaranteed for a single 2.7 V to 5.5 V supply.
2. Low Power Consumption.
Typically 0.625 mW with a 5 V supply.
3. 3-Wire Serial Interface.
4. Unbuffered output capable of driving 60 kΩ loads, which
reduces power consumption as there is no internal buffer
to drive.
5. Power-On Reset Circuitry.
Rev. A
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