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(Datasheet) AD5441

12-Bit Serial Input Multiplying DAC

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AD5441 pdf
FEATURES
2.5 V to 5.5 V supply operation
True 12-bit accuracy
5 V operation @ <1 μA
Fast 3-wire serial input
Fast 5 μs settling time
1.9 MHz, 4-quadrant multiply BW
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Standard and rotated pinout
APPLICATIONS
Ideal for PLC applications in industrial control
Programmable amplifiers and attenuators
Digitally controlled calibration and filters
Motion control systems
GENERAL DESCRIPTION
The AD5441 is an improved high accuracy 12-bit multiplying
digital-to-analog converter (DAC) in space-saving 8-lead
packages. Featuring serial input, double buffering, and excellent
analog performance, the AD5441 is ideal for applications where
PC board space is at a premium. Improved linearity and gain
error performance permit reduced part counts through the
elimination of trimming components. Separate input clock and
load DAC control lines allow full user control of data loading
and analog output.
The circuit consists of a 12-bit serial-in/parallel-out shift register, a
12-bit DAC register, a 12-bit CMOS DAC, and control logic.
Serial data is clocked into the input register on the rising edge of
the clock pulse. When the new data-word is clocked in, it is
loaded into the DAC register with the LD input pin. Data in the
DAC register is converted to an output current by the DAC.
Consuming only 1 μA from a single 5 V power supply, the
AD5441 is the ideal low power, small size, high performance
solution to many application problems.
The AD5441 is specified over the extended industrial (−40°C to
+125°C) temperature range. It is available in an 8-lead LFCSP
and an 8-lead MSOP.
12-Bit Serial Input
Multiplying DAC
AD5441
FUNCTIONAL BLOCK DIAGRAM
VDD
VREF
AD5441
DAC
RFB
IOUT
12
LD DAC REG
CLK
SRI
12
12-BIT SHIFT
REGISTER
GND
Figure 1.
Rev. 0
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.
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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
©2008 Analog Devices, Inc. All rights reserved.
Analog Devices
Analog Devices


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