12-Bit Serial Input Multiplying DAC AD5441 FEATURES FUNCTIONAL BLOCK DIAGRAM 2.5 V to 5.5 V supply operation AD5441 V R DD FB True 12-bit accuracy 5 V operation <1 A V DAC I REF OUT Fast 3-wire serial input 12 Fast 5 s settling time LD DAC REG 1.9 MHz, 4-quadrant multiply BW Upgrade for DAC8043 and DAC8043A 12 GND Standard and rotated pinout CLK 12-BIT SHIFT SRI REGISTER APPLICATIONS Figure 1. 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 LD loaded into the DAC register with the input pin. Data in the DAC register is converted to an output current by the DAC. Consuming only 1 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 (40C to +125C) 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 20082011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06492-001AD5441 TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications....................................................................................... 1 Terminology.................................................................................... 10 Functional Block Diagram .............................................................. 1 Parameter Definitions.................................................................... 11 General Description ......................................................................... 1 General Circuit Information..................................................... 11 Revision History ............................................................................... 2 Output Impedance ..................................................................... 11 Specifications..................................................................................... 3 Applications Information.......................................................... 11 Electrical Characteristics............................................................. 3 Unipolar 2-Quadrant Multiplying ........................................... 11 Timing Characteristics ................................................................ 4 Bipolar 4-Quadrant Multiplying .............................................. 12 Absolute Maximum Ratings............................................................ 5 Interface Logic Information...................................................... 12 Thermal Resistance ...................................................................... 5 Digital Section ............................................................................ 12 ESD Caution.................................................................................. 5 Outline Dimensions....................................................................... 13 Pin Configurations and Function Descriptions ........................... 6 Ordering Guide .......................................................................... 13 REVISION HISTORY 3/11Rev. 0 to Rev. A Deleted Figure 2................................................................................ 4 Added Timing Diagrams Section................................................... 4 Added New Figure 2, Figure 3, and Figure 4, Renumbered Figures Sequentially ......................................................................... 4 Changes to Figure 5 and Table 6..................................................... 6 Updated Outline Dimensions ....................................................... 13 Changes to Ordering Guide .......................................................... 13 1/08Revision 0: Initial Version Rev. A Page 2 of 16