A1 W1 B1 A2 W2 B2 A3 W3 B3 A4 W4 B4 Quad Channel, 256-Position, SPI, Nonvolatile Digital Potentiometer Enhanced Product AD5144-EP FEATURES FUNCTIONAL BLOCK DIAGRAM V V LOGIC DD 10 k resistance option Resistor tolerance: 8% maximum AD5144-EP Maximum continuous current: 6 mA at R = 10 k POWER-ON AB RDAC1 RESET Low resistance temperature coefficient: 35 ppm/C typical INPUT REGISTER 1 Wide bandwidth: 3 MHz at R = 10 k AB Fast start-up time: 75 s RDAC2 Linear gain setting mode SYNC INPUT REGISTER 2 Single- and dual-supply operation SCLK SPI RDAC3 SERIAL Independent V : 1.8 V to 5.5 V LOGIC INTERFACE SDI 7/8 INPUT REGISTER 3 ENHANCED PRODUCT FEATURES SDO RDAC4 Supports defense and aerospace applications INPUT (AQEC standard) REGISTER 4 Military temperature range: 55C to +125C EEPROM Controlled manufacturing baseline MEMORY One assembly/test site One fabrication site GND V SS Product change notification Figure 1. Qualification data available on request APPLICATIONS Missiles and munitions Avionics and unmanned systems Programmable filters, delays, and time constants Programmable power supplies GENERAL DESCRIPTION The AD5144-EP potentiometer provides a nonvolatile solution The low wiper resistance of 40 at the ends of the resistor array for 256-position adjustment applications, offering guaranteed low allow for pin-to-pin connection. resistor tolerance errors of 8% and up to 6 mA current density The wiper values can be set through a serial peripheral interface in the Ax, Bx, and Wx pins. (SPI) digital interface that is also used to read back the wiper The low resistor tolerance and low nominal temperature register and electronically erasable programmable read-only coefficient simplify open-loop applications as well as memory (EEPROM) contents. applications requiring tolerance matching. The AD5144-EP is available in a 20-lead TSSOP. The device is The linear gain setting mode allows independent programming guaranteed to operate over the 55C to +125C temperature of the resistance between the digital potentiometer terminals, range. through the Terminal A to Terminal W (R ) and the Terminal W AW Additional application and technical information can be found to Terminal B (RWB) string resistors, allowing accurate resistor in the AD5144 data sheet. matching. The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for ac signals, making this device suitable for filter design. Rev. A Document Feedback 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 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 21593-001AD5144-EP Enhanced Product TABLE OF CONTENTS Features .............................................................................................. 1 Shift Register and Timing Diagrams ..........................................5 Enhanced Product Features ............................................................ 1 Absolute Maximum Ratings ............................................................7 Applications ....................................................................................... 1 Thermal Resistance .......................................................................7 General Description ......................................................................... 1 ESD Caution...................................................................................7 Functional Block Diagram .............................................................. 1 Pin Configuration and Function Descriptions ..............................8 Revision History ............................................................................... 2 Typical Performance Characteristics ..............................................9 Specifications ..................................................................................... 3 Outline Dimensions ....................................................................... 11 Electrical Characteristics ............................................................. 3 Ordering Guide .......................................................................... 11 Interface Timing Specifications .................................................. 5 REVISION HISTORY 10/2019Rev. 0 to Rev. A Changes to Table 1 ............................................................................ 4 9/2019Revision 0: Initial Version Rev. A Page 2 of 11