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AD5450YUJ Fiches technique(PDF) 1 Page - Analog Devices

No de pièce AD5450YUJ
Description  8/10/12/14-Bit High Bandwidth Multiplying DACs with Serial Interface
Download  16 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

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AD5450/AD5451/AD5452/AD5453*
a
REV. PrD Oct, 2003
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., 2003
8/10/12/14-BitHighBandwidth
Multiplying DACs with Serial Interface
Preliminary Technical Data
PRELIMINARY TECHNICAL DATA
*US Patent Number 5,689,257
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
FEATURES
+2.5 V to +5.5 V Supply Operation
50MHz Serial Interface
10MHz Multiplying Bandwidth
±10V Reference Input
8-Lead TSOT & MSOP Packages
Pin Compatible 8, 10, 12 and 14 Bit Current Output DACs
Extended Temperature range –40°C to +125°C
Guaranteed Monotonic
Four Quadrant Multiplication
Power On Reset with brown out detect
<5
µµµµµA typical Current Consumption
APPLICATIONS
Portable Battery Powered Applications
Waveform Generators
Analog Processing
Instrumentation Applications
Programmable Amplifiers and Attenuators
Digitally-Controlled Calibration
Programmable Filters and Oscillators
Composite Video
Ultrasound
Gain, offset and Voltage Trimming
GENERAL DESCRIPTION
The AD5450/AD5451/AD5452/AD5453 are CMOS 8,
10, 12 and 14-bit Current Output digital-to-analog
converters respectively.
These devices operate from a +2.5 V to 5.5 V power sup-
ply, making them suited to battery powered applications
and many other applications.
These DACs utilize double buffered 3-wire serial interface
that is compatible with SPI
TM, QSPITM, MICROWIRETM
and most DSP interface standards.
On power-up, the internal shift register and latches are
filled with zeros and the DAC output is at zero scale.
As a result of manufacture on a CMOS sub micron
process, they offer excellent four quadrant multiplication
characteristics, with large signal multiplying bandwidths
of 10MHz.
FUNCTIONAL BLOCK DIAGRAM
The applied external reference input voltage (VREF)
determines the full scale output current. An integrated
feedback resistor (RFB) provides temperature tracking and
full scale voltage output when combined with an external
Current to Voltage precision amplifier.
The AD5450/AD5451/AD5452/AD5453 DACs are
available in small 8-lead TSOT & MSOP packages.
CONTROL LOGIC &
INPUT SHIFT REGISTER
SCLK
SYNC
AD5450/
AD5451/
AD5452/
AD5453
VREF
IOUT1
RFB
R
8/10/12/14
BIT
R-2R DAC
DAC REGISTER
SDIN
INPUT LATCH
VDD
Power On
Reset
GND


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