5 V, 12-Bit nanoDAC, Serial Interface in MSOP and LFCSP Packages AD5626 FEATURES GENERAL DESCRIPTION 8-lead MSOP and 8-lead LFCSP packages The AD5626, a member of the nanoDAC family, is a complete Complete voltage output with internal reference serial input, 12-bit, voltage output digital-to-analog converter 1 mV/bit with 4.095 V full scale (DAC) designed to operate from a single 5 V supply. It contains 5 V single-supply operation the DAC, input shift register and latches, reference, and a rail- No external components required to-rail output amplifier. The AD5626 monolithic DAC offers 3-wire serial interface, 20 MHz data loading rate the user low cost and ease of use in 5 V only systems. Low power: 2.5 mW Coding for the AD5626 is natural binary with the MSB loaded first. The output op amp can swing to either rail and is set to a APPLICATIONS range of 0 V to 4.095 V for a one-millivolt-per-bit resolution. It Portable instrumentation is capable of sinking and sourcing 5 mA. An on-chip reference Digitally controlled calibration is laser trimmed to provide an accurate full-scale output voltage Servo controls of 4.095 V. Process control equipment PC peripherals This part features a serial interface that is high speed, three- wire, DSP compatible with data in (SDIN), clock (SCLK), and LDAC load strobe ( ). There is also a chip-select pin for connecting multiple DACs. CLR The input sets the output to zero scale at power on or upon user demand. The AD5626 is specified over the extended industrial tempera- ture range (40C to +85C). The AD5626 is available in MSOP and LFCSP surface-mount packages. FUNCTIONAL BLOCK DIAGRAM V DD AD5626 REF LDAC OUTPUT V DAC REGISTER 12-BIT DAC OUT BUFFER CLR INPUT REGISTER CS SCLK SDIN GND Figure 1. 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 20072009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06757-001AD5626 TABLE OF CONTENTS Features .............................................................................................. 1 Output Section ............................................................................ 10 Applications ....................................................................................... 1 Power Supply ............................................................................... 10 General Description ......................................................................... 1 Timing and Control ................................................................... 11 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 12 Revision History ............................................................................... 2 Power Supplies, Bypassing, and Grounding ........................... 12 Specif icat ions ..................................................................................... 3 Unipolar Output Operation ...................................................... 12 Electrical Characteristics ............................................................. 3 Operating the AD5626 on 12 V or 15 V Supplies Only ........ 13 Timing Characteristics ................................................................ 4 Measuring Offset Error ............................................................. 13 Absolute Maximum Ratings ............................................................ 5 Bipolar Output Operation ......................................................... 13 ESD Caution .................................................................................. 5 Generating a Negative Supply Voltage .................................... 15 Pin Configurations and Function Descriptions ........................... 6 A Single-Supply, Programmable Current Source .................. 15 Typical Performance Characteristics ............................................. 7 Galvanically-Isolated Interface ................................................. 15 Theory of Operation ...................................................................... 10 Microprocessor Interfacing ....................................................... 16 DAC Section ................................................................................ 10 Outline Dimensions ....................................................................... 17 Amplifier Section........................................................................ 10 Ordering Guide .......................................................................... 17 REVISION HISTORY 1/09Rev. 0 to Rev. A Change to Full-Scale Tempco Paramter and Full-Scale Voltage (Min) Parameter ................................................................. 3 12/07Revision 0: Initial Version Rev. A Page 2 of 20