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AD5744RBSUZ Datasheet

  • AD5744RBSUZ

  • Complete Quad, 14-Bit, High Accuracy, Serial Input, Bipolar ...

  • 651.55KB

  • 32頁

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Preliminary Technical Data
FEATURES
Complete quad, 14-bit digital-to-analog
converter (DAC)
Programmable output range: 鹵10 V, 鹵10.2564 V,
or 鹵10.5263 V
鹵1 LSB max INL error, 鹵1 LSB max DNL error
Low noise: 60 nV/鈭欻z
Settling time: 10 渭s max
Integrated reference buffers
Internal reference: 10 ppm/擄C
On-chip die temperature sensor
Output control during power-up/brownout
Programmable short-circuit protection
Simultaneous updating via LDAC
Asynchronous CLR to zero code
Digital offset and gain adjust
Logic output control pins
DSP-/microcontroller-compatible serial interface
Temperature range: 鈭?0擄C to +85擄C
iCMOS鈩?/div>
process technology
1
Complete Quad, 14-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
AD5744R
GENERAL DESCRIPTION
The AD5744R is a quad, 14-bit, serial input, bipolar voltage
output digital-to-analog converter that operates from supply
voltages of 鹵11.4 V up to 鹵16.5 V. Nominal full-scale output
range is 鹵10 V. The AD5744R provides integrated output
amplifiers, reference buffers and proprietary power-up/power-
down control circuitry. The parts also feature a digital I/O port,
which is programmed via the serial interface and an analog
temperature sensor. The part incorporates digital offset and
gain adjust registers per channel.
The AD5744R is a high performance converter that offers
guaranteed monotonicity, integral nonlinearity (INL) of 鹵1 LSB,
low noise, and 10 渭s settling time. The AD5744R includes an
on-chip 5 V reference with a reference tempco of 10 ppm/擄C
maximum. During power-up (when the supply voltages are
changing), VOUT is clamped to 0 V via a low impedance path.
The AD5744R uses a serial interface that operates at clock rates
of up to 30 MHz and is compatible with DSP and
microcontroller interface standards. Double buffering allows
the simultaneous updating of all DACs. The input coding is
programmable to either twos complement or offset binary
formats. The asynchronous clear function clears all DAC
registers to either bipolar zero or zero scale depending on the
coding used. The AD5744R is ideal for both closed-loop servo
control and open-loop control applications. The AD5744R is
available in a 32-lead TQFP, and offers guaranteed
specifications over the 鈭?0擄C to +85擄C industrial temperature
range. See Figure 1, the functional block diagram.
APPLICATIONS
Industrial automation
Open-/closed-loop servo control
Process control
Data acquisition systems
Automatic test equipment
Automotive test and measurement
High accuracy instrumentation
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 鹵15 V supplies while allowing dramatic reductions in
power consumption and package size, and increased ac and dc
performance.
Rev. PrA
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 registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
漏2006 Analog Devices, Inc. All rights reserved.

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