Complete Quad, 14-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
AD5744R
FEATURES
GENERAꢁ DESCRIPTION
Complete quad, 14-bit digital-to-analog converter (DAC)
Programmable output range: 10 V, 10.2ꢀ64 V, or
10.ꢀ263 V
1 ꢁSB maximum INꢁ error, 1 ꢁSB maximum DNꢁ error
ꢁow noise: 60 nV/√Hz
Settling time: 10 μs maximum
Integrated reference buffers
Internal reference: 10 ppm/°C maximum
On-chip die temperature sensor
Output control during power-up/brownout
Programmable short-circuit protection
The AD5744R is a quad, 14-bit, serial input, bipolar voltage output
DAC that operates from supply voltages of 11ꢀ4 V to 1ꢁꢀ5
ꢀ
Nominal full-scale output range is 10 ꢀ The AD5744R provides
integrated output amplifiers, reference buffers, and proprietary
power-up/power-down control circuitryꢀ The part also features
a digital I/O port, programmed via the serial interface, and an
analog temperature sensorꢀ The part incorporates digital offset
and gain adjust registers per channelꢀ
The AD5744R is a high performance converter that provides
guaranteed monotonicity, integral nonlinearity (INL) of 1 LSB,
low noise, and 10 μs settling timeꢀ The AD5744R includes an on-
chip 5 V reference with a reference temperature coefficient of
10 ppm/°C maximumꢀ During power-up when the supply voltages
are changing, VOUTx is clamped to 0 V via a low impedance pathꢀ
ꢁDAC
Simultaneous updating via
CꢁR
Asynchronous
to zero code
Digital offset and gain adjust
ꢁogic output control pins
The AD5744R is based on the iCMOS® technology platform, which
is designed for analog systems designers within industrial/instru-
mentation equipment OEMs who need high performance ICs at
higher voltage levelsꢀ iCMOS enables the development of analog
ICs capable of 30 V and operation at 15 V supplies, while allowing
reductions in power consumption and package size, coupled with
increased ac and dc performanceꢀ
DSP-/microcontroller-compatible serial interface
Temperature range: −40°C to +8ꢀ°C
iCMOS process technology
APPꢁICATIONS
Industrial automation
Open-loop/closed-loop servo control
Process control
Data acquisition systems
Automatic test equipment
Automotive test and measurement
High accuracy instrumentation
The AD5744R uses a serial interface that operates at clock rates
of up to 30 MHz and is compatible with DSP and microcontroller
interface standardsꢀ Double buffering allows the simultaneous
updating of all DACsꢀ The input coding is programmable to either
twos complement or offset binary formatsꢀ The asynchronous clear
function clears all DAC registers to either bipolar zero or zero scale,
depending on the coding usedꢀ The AD5744R is ideal for both
closed-loop servo control and open-loop control applicationsꢀ The
AD5744R is available in a 32-lead TQFP and offers guaranteed
specifications over the −40°C to +85°C industrial temperature
range (see Figure 1 for the functional block diagram)ꢀ
Rev. A
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.
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