Single, 12-/14-/16-Bit nanoDAC with 5 ppm/C On-Chip Reference in SOT-23 Data Sheet AD5620/AD5640/AD5660 FEATURES FUNCTIONAL BLOCK DIAGRAM V V Low power, single nanoDACs REFOUT GND DD AD5660: 16 bits 1.25/2.5V AD5620/AD5640/AD5660 POWER-ON AD5640: 14 bits REF RESET V FB AD5620: 12 bits 12-bit accuracy guaranteed REF(+) OUTPUT DAC V On-chip, 1.25 V/2.5 V, 5 ppm/C reference OUT BUFFER 16-BIT REGISTER DAC Tiny 8-lead SOT-23, MSOP, and LFCSP packages Power-down to 480 nA 5 V, 200 nA 3 V INPUT 3 V/5 V single power supply POWER-DOWN CONTROL RESISTOR CONTROL LOGIC Guaranteed 16-bit monotonic by design LOGIC NETWORK Power-on reset to zero/midscale 3 power-down functions Serial interface with Schmitt-triggered inputs SYNC SCLK DIN Rail-to-rail operation Figure 1. SYNC interrupt facility GENERAL DESCRIPTION APPLICATIONS The AD5620/AD5640/AD5660, members of the nanoDAC Process control family of devices, are low power, single, 12-/14-/16-bit, buffered Data acquisition systems voltage-out DACs and are guaranteed monotonic by design. Portable battery-powered instruments The AD5620/AD5640/AD5660-1 parts include an internal, Digital gain and offset adjustment 1.25 V, 5 ppm/C reference, giving a full-scale output voltage Programmable voltage and current sources range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include Programmable attenuators an internal, 2.5 V, 5 ppm/C reference, giving a full-scale output voltage range of 5 V. The reference associated with each part is PRODUCT HIGHLIGHTS available at the V pin. REFOUT 1. 12-/14-/16-bit nanoDAC12-bit accuracy guaranteed. The parts incorporate a power-on reset circuit to ensure that the 2. On-chip, 1.25 V/2.5 V, 5 ppm/C reference. DAC output powers up to 0 V (AD5620/AD5640/AD5660-1-2) 3. Available in 8-lead SOT-23, MSOP, and LFCSP packages. or midscale (AD5620-3 and AD5660-3) and remains there until 4. Power-on reset to 0 V or midscale. a valid write takes place. The parts contain a power-down 5. 10 s settling time. feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads Table 1. Related Device while in power-down mode. The power consumption is Part No. Description 2.5 mW at 5 V, reducing to 1 W in power-down mode. AD5662 2.7 V to 5.5 V, 16-bit DAC in SOT-23, LFCSP, and The AD5620/AD5640/AD5660 on-chip precision output MSOP, external reference amplifier allows rail-to-rail output swing to be achieved. For remote sensing applications, the output amplifiers inverting input is available to the user. The AD5620/AD5640/AD5660 use a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards. Rev. G 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 20052013 Analog Devices, Inc. All rights reserved. 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. Technical Support www.analog.com 04539-001AD5620/AD5640/AD5660 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Internal Reference ...................................................................... 17 Applications ....................................................................................... 1 Output Amplifier ........................................................................ 17 Product Highlights ........................................................................... 1 Serial Interface ............................................................................ 17 Functional Block Diagram .............................................................. 1 Input Shift Register .................................................................... 18 General Description ......................................................................... 1 Interrupt .......................................................................... 18 SYNC Revision History ............................................................................... 2 Power-On Reset .......................................................................... 19 Specifications ..................................................................................... 3 Power-Down Modes .................................................................. 19 AD5620/AD5640/AD5660-2-3 .................................................. 3 Microprocessor Interfacing ....................................................... 19 AD5620/AD5640/AD5660-1 ...................................................... 5 Applications Information .............................................................. 21 Timing Characteristics ................................................................ 7 Using a REF19x as a Power Supply for the AD5620/AD5640/AD5660 ....................................................... 21 Absolute Maximum Ratings ............................................................ 8 Bipolar Operation Using the AD5660 ..................................... 21 ESD Caution .................................................................................. 8 Using the AD5660 as an Isolated, Programmable, 4 mA to Pin Configurations and Function Descriptions ........................... 9 20 mA Process Controller ......................................................... 22 Typical Performance Characteristics ........................................... 10 Using the AD5620/AD5640/AD5660 with a Galvanically Isolated Interface ........................................................................ 22 Terminology .................................................................................... 16 Power Supply Bypassing and Grounding ................................ 23 Theory of Operation ...................................................................... 17 Outline Dimensions ....................................................................... 24 D/A Section ................................................................................. 17 Ordering Guide .......................................................................... 26 Resistor String ............................................................................. 17 REVISION HISTORY 10/09Rev. B to Rev. C 8/13Rev. F to Rev. G Changes to Ordering Guide .......................................................... 23 Added LFCSP (Throughout)........................................................... 1 5/06Rev. A to Rev. B Added Thermal Impedance for LFCSP Table 5 ........................... 8 Added Figure 5 Renumbered Sequentially .................................. 9 Updated Formatted ............................................................ Universal Updated Outline Dimensions ....................................................... 24 Updated Temperature Range ............................................ Universal Changes to Ordering Guide .......................................................... 26 Changes to Table 2 ............................................................................. 3 Changes to Table 5 ............................................................................. 8 12/10Rev. E to Rev. F Replaced Figure 17, Figure 18, and Figure 19 ............................. 12 Changes to Ordering Guide .......................................................... 25 Changes to Ordering Guides .................................................. 23, 24 7/10Rev. D to Rev. E 9/05Rev. 0 to Rev. A Moved Using the AD5660 as an Isolated, Programmable, 4 mA Changes to Specifications ................................................................. 5 to 20 mA Process Controller Section ........................................... 22 Changes to Outline Dimensions .................................................. 23 Moved Power Supply Bypassing and Grounding Section ......... 23 7/05Revision 0: Initial Version Changes to Ordering Guide .......................................................... 25 3/10Rev. C to Rev. D Changes to Ordering Guide .......................................................... 24 Rev. G Page 2 of 28