2.7 V to 5.5 V, 140 A, Rail-to-Rail Voltage Output 10-Bit DAC in a SOT-23 Data Sheet AD5310 FEATURES FUNCTIONAL BLOCK DIAGRAM Single 10-bit DAC 6-lead SOT-23 and 8-lead SOIC packages Micropower operation: 140 A 5 V Power-down to 200 nA 5 V, 50 nA 3 V 2.7 V to 5.5 V power supply Guaranteed monotonic by design Reference derived from power supply Power-on reset to 0 V Three power-down functions Low power serial interface with Schmitt triggered inputs On-chip output buffer amplifier, rail-to-rail operation SYNC interrupt facility Qualified for automotive applications APPLICATIONS Figure 1. Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators GENERAL DESCRIPTION 1 The AD5310 is a single, 10-bit, buffered voltage output DAC The AD5310 is one of a family of pin-compatible DACs. The that operates from a single 2.7 V to 5.5 V supply, consuming AD5300 is the 8-bit version, and the AD5320 is the 12-bit version. 115 A at 3 V. Its on-chip precision output amplifier allows The AD5300/AD5310/AD5320 are available in 6-lead SOT-23 rail-to-rail output swing. The AD5310 utilizes a versatile 3-wire packages and 8-lead SOIC packages. serial interface that operates at clock rates of up to 30 MHz and PRODUCT HIGHLIGHTS is compatible with standard SPI, QSPI, MICROWIRE, and 1. Available in 6-lead SOT-23 and 8-lead SOIC packages. DSP interface standards. 2. Low power, single-supply operation. This part operates The reference for AD5310 is derived from the power supply inputs from a single 2.7 V to 5.5 V supply and typically consumes and, therefore, provides the widest dynamic output range. The 0.35 mW at 3 V and 0.7 mW at 5 V, making it ideal for part incorporates a power-on reset circuit that ensures that the battery-powered applications. DAC output powers up to 0 V and remains there until a valid 3. The on-chip output buffer amplifier allows the output of write takes place to the device. The part contains a power-down the DAC to swing rail-to-rail with a slew rate of 1 V/s. feature, which reduces the current consumption of the device to 4. Reference derived from the power supply. 200 nA at 5 V and provides software-selectable output loads while 5. High speed serial interface with clock speeds of up to 30 MHz. in power-down mode. The part is put into power-down mode Designed for very low power consumption. The interface over the serial interface. only powers up during a write cycle. The low power consumption of this part in normal operation 6. Power-down capability. When powered down, the DAC makes it ideally suited for portable, battery-operated equipment. typically consumes 50 nA at 3 V and 200 nA at 5 V. The power consumption is 0.7 mW at 5 V, reducing to 1 W in power-down mode. 1 Patent pending protected by U.S. Patent No. 5684481. Rev. B 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. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 2012 Analog Devices, Inc. All rights reserved. AD5310 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Output Amplifier ........................................................................ 11 Applications ....................................................................................... 1 Serial Interface ............................................................................ 11 Functional Block Diagram .............................................................. 1 Input Shift Register .................................................................... 11 General Description ......................................................................... 1 SYNC Interrupt .......................................................................... 12 Product Highlights ........................................................................... 1 Power-On Reset .......................................................................... 12 Revision History ............................................................................... 2 Power-Down Modes .................................................................. 12 Specifications ..................................................................................... 3 Microprocessor Interfacing ....................................................... 12 Timing Characteristics ................................................................ 4 Applications Information .............................................................. 14 Absolute Maximum Ratings ............................................................ 5 Using REF19x as a Power Supply for AD5310 ....................... 14 ESD Caution .................................................................................. 5 Bipolar Operation Using the AD5310 ..................................... 14 Pin Configurations and Function Descriptions ........................... 6 Using AD5310 with an Opto-Isolated Interface .................... 14 Typical Performance Characteristics ............................................. 7 Power Supply Bypassing and Grounding ................................ 15 Terminology .................................................................................... 10 Outline Dimensions ....................................................................... 16 Theory of Operation ...................................................................... 11 Ordering Guide .......................................................................... 16 D/A Section ................................................................................. 11 Automotive Products ................................................................. 16 Resistor String ............................................................................. 11 REVISION HISTORY 7/12Rev. A to Rev. B Updated Format .................................................................. Universal Changes to Features .......................................................................... 1 Change to Figure 9 Caption ............................................................ 7 Changes to AD5310 to ADSP-2101 Interface Section and Figure 27............................................................................... 12 Updated Outline Dimensions ....................................................... 16 Changes to Ordering Guide .......................................................... 16 Added Automotive Products Section........................................... 16 5/99Rev. 0 to Rev. A Rev. B Page 2 of 16