AD5441 Analog Devices, AD5441 Datasheet

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AD5441

Manufacturer Part Number
AD5441
Description
12-Bit Serial Input Multiplying DAC
Manufacturer
Analog Devices
Datasheet

Specifications of AD5441

Resolution (bits)
12bit
Dac Update Rate
5MSPS
Dac Settling Time
500ns
Max Pos Supply (v)
+5.5V
Single-supply
Yes
Dac Type
Current Out
Dac Input Format
Ser

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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
Upgrade for
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.
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 registered trademarks are the property of their respective owners.
DAC8043
and
DAC8043A
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
FUNCTIONAL BLOCK DIAGRAM
V
CLK
V
REF
SRI
LD
DD
©2008–2011 Analog Devices, Inc. All rights reserved.
12-Bit Serial Input
12-BIT SHIFT
REGISTER
DAC REG
AD5441
DAC
Figure 1.
12
12
Multiplying DAC
R
GND
I
OUT
FB
AD5441
www.analog.com

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AD5441 Summary of contents

Page 1

... 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 available in an 8-lead LFCSP and an 8-lead MSOP. ...

Page 2

... AD5441 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Timing Characteristics ................................................................ 4 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 REVISION HISTORY 3/11—Rev Rev. A Deleted Figure 2................................................................................ 4 Added Timing Diagrams Section................................................... 4 Added New Figure 2, Figure 3, and Figure 4, Renumbered Figures Sequentially ...

Page 3

... V p-p, data = 000 , kHz REF rms, data = FFF , kHz REF 100 kHz between R and I FB OUT −3 dB 100 mV rms, data = FFF OUT REF REF LOGIC LOGIC DD ΔV = ±5% DD AD5441 H ...

Page 4

... AD5441 TIMING CHARACTERISTICS All input control signals are specified with temperature range = −40°C to +125°C; all specifications T REF Table 2. Timing Characteristics Parameter 2 LD1 ASB ...

Page 5

... MSOP 50 mA 8-Lead LFCSP (T max − T )/θ 150°C 1 Exposed pad soldered to the ground plane. −40°C to +125°C −65°C to +150°C ESD CAUTION 300°C Rev Page AD5441 θ θ 142 Unit °C/W °C/W ...

Page 6

... Positive Power Supply Input. Specified range of operation 5 V ± 10 Exposed Pad. The exposed pad should be connected to the ground plane CLK 6 SRI 5 LD Rev Page REF DD AD5441 CLK FB TOP VIEW I SRI 3 6 OUT (Not to Scale) GND Figure 6 ...

Page 7

... 10V 0.4 REF 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 500 1000 1500 2000 2500 3000 CODE Figure 11. DNL vs. Code 100 –1.0 –0.5 0 0.5 TOTAL UNADJUSTED ERROR (LSB) Figure 12. Total Unadjusted Error Histogram AD5441 3500 4000 3500 4000 1.0 ...

Page 8

... AD5441 –2 –4 –2000 –1000 0 OP AMP OFFSET Figure 13. Integral Nonlinearity Error vs. External Op Amp 1400 1200 1000 800 600 400 200 0 10k 100k 1M FREQUENCY (Hz) Figure 14. Supply Current vs. Clock Frequency 0. 25°C A 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0. 0.5 1.0 1.5 2.0 2.5 3.0 INPUT VOLTAGE (V) Figure 15. Supply Current vs. Logic Input Voltage T = 25° ...

Page 9

... A V REF V DD –80 100 1k 10k 100k FREQUENCY (Hz) Figure 19. Reference Multiplying Bandwidth 100 ALL BITS 100mV rms = 10M Rev Page AD5441 T = 25° 10V REF 10k 100k 1M 10M FREQUENCY (Hz) Figure 20. PSRR vs. Frequency ...

Page 10

... AD5441 TERMINOLOGY Relative Accuracy (INL) Relative accuracy or endpoint nonlinearity is a measure of the maximum deviation from a straight line passing through the endpoints of the DAC transfer function measured after adjusting for zero and full scale and is normally expressed in LSBs percentage of the full-scale reading. ...

Page 11

... During any testing of the resistor ladder or R incoming inspection), V series switches. OUTPUT IMPEDANCE The output resistance of the AD5441 the case of the output capacitance, varies with the digital input code. This resistance, looking back into the I 10 kΩ (the feedback resistor alone when all digital inputs are low) and 7.5 kΩ ...

Page 12

... C1 PHASE COMPENSATION (1pF TO 2pF) MAY BE REQUIRED IF A1/ HIGH SPEED AMPLIFIER. DIGITAL SECTION The digital inputs of the AD5441, SRI and CLK, are TTL- compatible. The input voltage levels affect the amount of current OUT1 drawn from the supply; peak supply current occurs as the digital ...

Page 13

... LFCSP_WD −40°C to +125°C 8-Lead LFCSP_WD −40°C to +125°C 8-Lead MSOP −40°C to +125°C 8-Lead MSOP Rev Page 0.65 BSC 8 1.74 * EXPOSED PAD 1.64 1.49 1 2.48 2.38 2.23 0.80 8° 0.60 0° 0.40 Package Option CP-8-3 CP-8-3 RM-8 RM-8 AD5441 Branding DBD DBD DBC DBC ...

Page 14

... AD5441 NOTES Rev Page ...

Page 15

... NOTES Rev Page AD5441 ...

Page 16

... AD5441 NOTES ©2008–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06492-0-3/11(A) Rev Page ...

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