Quad, 12-/14-/16-Bit nanoDACs with 5 ppm/C On-Chip Reference Data Sheet AD5624R/AD5644R/AD5664R FEATURES FUNCTIONAL BLOCK DIAGRAM V GND V /V DD REFIN REFOUT Low power, smallest pin-compatible, quad nanoDACs 1.25V/2.5V REF AD5664R: 16 bits AD5624R/AD5644R/AD5664R AD5644R: 14 bits INPUT DAC STRING BUFFER V A AD5624R: 12 bits OUT REGISTER REGISTER DAC A User-selectable external or internal reference SCLK External reference default INPUT DAC STRING V B BUFFER OUT REGISTER REGISTER DAC B On-chip 1.25 V/2.5 V, 5 ppm/C reference INTERFACE SYNC LOGIC 10-lead MSOP 10-lead, 3 mm 3 mm LFCSP WD and INPUT DAC STRING BUFFER V C 12-ball, 1.665 mm 2.245 mm WLCSP OUT REGISTER REGISTER DAC C 2.7 V to 5.5 V power supply DIN Guaranteed monotonic by design DAC INPUT STRING BUFFER V D OUT REGISTER REGISTER DAC D Power-on reset to zero scale Per channel power-down POWER- POWER-ON DOWN LOGIC Serial interface, up to 50 MHz LOGIC Figure 1. APPLICATIONS Process controls Data acquisition systems Table 1. Related Devices Portable battery-powered instruments Part No. Description Digital gain and offset adjustment AD5624/AD5664 2.7 V to 5.5 V quad, 12-/16-bit DACs, external Programmable voltage and current sources reference Programmable attenuators AD5666 2.7 V to 5.5 V quad, 16-bit DAC, internal reference, LDAC, CLR pins GENERAL DESCRIPTION The AD5624R/AD5644R/AD5664R, members of the nanoDAC 480 nA at 5 V and provides software-selectable output loads family, are low power, quad, 12-/14-/16-bit buffered voltage- while in power-down mode. The low power consumption of out DACs. All devices operate from a single 2.7 V to 5.5 V this part in normal operation makes it ideally suited to portable supply and are guaranteed monotonic by design. battery-operated equipment. The AD5624R/AD5644R/AD5664R use a versatile 3-wire serial The AD5624R/AD5644R/AD5664R have an on-chip reference. The AD56x4R-3 has a 1.25 V, 5 ppm/C reference, giving a full- interface that operates at clock rates up to 50 MHz, and is com- scale output range of 2.5 V the AD56x4R-5 has a 2.5 V, patible with standard SPI, QSPI, MICROWIRE, and DSP 5 ppm/C reference giving a full-scale output range of 5 V. The interface standards. The on-chip precision output amplifier on-chip reference is off at power-up, allowing the use of an enables rail-to-rail output swing. external reference all devices can be operated from a single PRODUCT HIGHLIGHTS 2.7 V to 5.5 V supply. The internal reference is enabled via a 1. Quad 12-/14-/16-bit DACs. software write. 2. On-chip 1.25 V/2.5 V, 5 ppm/C reference. The part incorporates a power-on reset circuit that ensures the 3. Available in 10-lead MSOP 10-lead, 3 mm 3 mm DAC output powers up to 0 V and remains there until a valid LFCSP WD and 12-ball, 1.665 mm 2.245 mm WLCSP. write takes place. The part contains a per-channel power-down 4. Low power, typically consumes 1.32 mW at 3 V and feature that reduces the current consumption of the device to 2.25 mW at 5 V. Rev. D 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. Tel: 781.329.4700 20062020 Analog Devices, Inc. All rights reserved. No license is granted by implication or otherwise under any patent or patent rights of Analog Technical Support www.analog.com Devices. Trademarks and registered trademarks are the property of their respective owners. 05856-001AD5624R/AD5644R/AD5664R Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Internal Reference ...................................................................... 20 Applications ...................................................................................... 1 External Reference ..................................................................... 20 Functional Block Diagram .............................................................. 1 Serial Interface ............................................................................ 20 General Description ......................................................................... 1 Input Shift Register .................................................................... 21 Product Highlights ........................................................................... 1 SYNC Interrupt .......................................................................... 21 Revision History ............................................................................... 2 Power-On Reset .......................................................................... 22 Specifications .................................................................................... 3 Software Reset ............................................................................. 22 AD5624R-5/AD5644R-5/AD5664R-5 ...................................... 3 Power-Down Modes .................................................................. 22 AD5624R-3/AD5644R-3/AD5664R-3 ...................................... 4 LDAC Function .......................................................................... 23 AC Characteristics ....................................................................... 6 Internal Reference Setup ........................................................... 23 Timing Characteristics ................................................................ 7 Microprocessor Interfacing ...................................................... 24 Timing Diagram ........................................................................... 7 Applications Information ............................................................. 25 Absolute Maximum Ratings ........................................................... 8 Using a Reference as a Power Supply for the AD5624R/AD5644R/AD5664R ............................................... 25 ESD Caution.................................................................................. 8 Bipolar Operation Using the AD5624R/AD5644R/AD5664R Pin Configurations and Function Descriptions ........................... 9 ....................................................................................................... 25 Typical Performance Characteristics ........................................... 10 Using AD5624R/AD5644R/AD5664R with a Galvanically Terminology .................................................................................... 18 Isolated Interface ........................................................................ 25 Theory of Operation ...................................................................... 20 Power Supply Bypassing and Grounding ............................... 26 Digital-to-Analog Section ......................................................... 20 Outline Dimensions ....................................................................... 27 Resistor String ............................................................................. 20 Ordering Guide .......................................................................... 28 Output Amplifier........................................................................ 20 REVISION HISTORY 6/2020Rev. C to Rev. D 4/2008Rev. A to Rev. B Change to Ordering Guide............................................................ 29 Changes to Figure 50 ..................................................................... 20 Updated Outline Dimensions ...................................................... 27 4/2013Rev. B to Rev. C Changes to Ordering Guide .......................................................... 28 Added 12-Ball WLCSP ..................................................... Universal Changes to Features and Product Highlights Sections ............... 1 11/2006Rev. 0 to Rev. A Change to Reference TC Parameter, Table 2 ............................... 3 Changes to Reference Output Parameter in Table 2 .................... 3 Added Thermal Impedance, WLCSP Package (4-Layer Board), Changes to Reference Output Parameter in Table 3 .................... 5 Parameter, Table 6 ...................................................................... 8 Added Note to Figure 3 .................................................................... 9 JA Added Figure 4 Renumbered Sequentially .................................. 9 Changes to Figure 3 Caption and Table 7 ..................................... 9 4/2006Revision 0: Initial Version Updated Outline Dimensions ....................................................... 27 Changes to Ordering Guide .......................................................... 28 Rev. D Page 2 of 28