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AD5441 Datasheet

  • AD5441

  • 12-Bit Serial Input Multiplying DAC

  • 277.15KB

  • 16頁

  • AD

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Preliminary Technical Data
FEATURES
3 V to 5 V supply operation
True 12-bit accuracy
5 V operation @ <10 渭A
Fast 3-wire serial input
Fast 1 渭s settling time
2.4 MHz, 4-quadrant multiply BW
Upgrade for DAC8043 and DAC8043A
Standard and rotated pinout
12-Bit Serial Input
Multiplying DAC
AD5441
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
REF
AD5441
R
FB
DAC
12
I
OUT
LD
DAC REG
12
06492-001
CLK
SRI
12-BIT SHIFT
REGISTER
GND
APPLICATIONS
Ideal for PLC applications in industrial control
Programmable amplifiers and attenuators
Digitally controlled calibration and filters
Motion control systems
Figure 1.
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 10 渭A 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 (鈭?0擄C to
+125擄C) temperature range. It is available in an 8-lead LFCSP
and an 8-lead MSOP.
0.5
T
A
= 鈥?0擄C, +25擄C, +85擄C
0.4 V
DD
= +5V
V
REF
= 鈥?0V
0.3
0.2
INL (LSB)
0.1
0
鈥?.1
鈥?.2
鈥?.3
鈥?.4
0
512
1024
1536
2048
CODE
2560
3072
3584
4096
06492-002
鈥?.5
Figure 2. Integral Nonlinearity Error vs. Code
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2007 Analog Devices, Inc. All rights reserved.

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