Quad, 12-Bit, Serial Input,
Unipolar/Bipolar, Voltage Output DAC
Data Sheet
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor foranyinfringementsofpatentsorother
rights of third parties that may result from its use. Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks arethe propertyoftheir respectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.47002007–2013 Analog Devices, Inc. All rights reserved.
FEATURES
+5 V to ±15 V operation
Unipolar or bipolar operation
±1 LSB maximum INL error, ±1LSB maximum DNL error
Guaranteed monotonic over temperature
Double-buffered inputs
Asynchronous CLR to zero scale/midscale
Operating temperature range: 40°C to +125°C
iCMOS process technology
APPLICATIONS
Industrial automation
Closed-loop servo control, processcontrol
Automotive test and measurement
Programmable logic controllers
GENERAL DESCRIPTION
Th
e AD5726 is a quad, 12-bit, serial input, voltage output
digital-to-analog converter (DAC) fabricated on Analog
Devices, Inc., iCMOS process technolog
y1 that offers
guaranteed monotonicity and integral nonlinearity (INL)
of ±1 LSB maximum.
Output voltage swing is set by two reference inputs, VREFP and
VREFN. The DAC offers a unipolar positive output range when
the VREFN input is set to 0 V and the VREFP input is set to a positive
voltage. A similar configuration with VREFP at 0 V and VREFN at a
negative voltage provides a unipolar negative output range.
Bipolar outputs are configured by connecting both VREFP and
VREFN to nonzero voltages. This method of setting output voltage
ranges has advantages over the bipolar offsetting methods
because it is not dependent on internal and external resistors
with different temperature coefficients.
Th
e AD5726 uses a serial interface that operates at clock rates up to
30 MHz and is compatible with DSPand microcontroller interface
standards. The asynchronous CLR function clears all DAC
registers to a user-selectable zero-scale or midscale output.
Th
e AD5726 is available in 16-lead SSOP, 20-lead SSOP, and
16-lead SOIC packages. It can be operated from a wide variety
of supply and reference voltages with supplies ranging from
single +5 V to ±15 V, and references ranging from +2.5 V to
±10 V. Power dissipation is less than 240 mW with ±15 V
supplies and only 30 mW with a +5 V supply. Operation is
specified over the temperature range of 40°C to +125°C.
A similar device, also available from Analog Devices is
th
e AD5725, which is a quad, 12-bit, parallel input, unipolar/
bipolar, voltage output DAC.
FUNCTIONAL BLOCK DIAGRAM
DAC C
DAC D
DAC B
DAC A
GND
AD5726
12
VOUTA
12
VOUTB
12
VOUTC
12
VOUTD
CLRSEL
12
I/O
REGISTER
AND
CONTROL
LOGIC
VREFP
AVDD
AVSS
SDIN
SCLK
CS
VREFN
LDAC
CLR
INPUT
REG A
INPUT
REG B
INPUT
REG C
INPUT
REG D
DAC
REG A
DAC
REG B
DAC
REG C
DAC
REG D
06469-
001
Figure 1.
1
For analog systems designers within industrial/instrumentation equipment OEMs who need high performance ICs at higher voltage levels,iCMOS is a technology
platform that enables the development of analog ICs capable of 30 V and operating at ±15 V supplies while allowing dramatic reductions in power consumption and
package size, and increased ac and dc performance.