Fully Accurate 16-Bit V nanoDAC OUT SPI Interface 2.7 V to 5.5 V, in an SOT-23 AD5062 FEATURES FUNCTIONAL BLOCK DIAGRAM V V REF DD Single 16-bit DAC, 1 LSB INL Power-on reset to midscale or zero-scale POWER-ON AD5062 Guaranteed monotonic by design BUF RESET 3 power-down functions Low power serial interface with Schmitt-triggered inputs REF(+) DAC V OUT DAC Tiny 8-lead SOT-23 package, low power REGISTER Fast settling time of 4 s typically 2.7 V to 5.5 V power supply AGND Low glitch on power-up INPUT POWER-DOWN CONTROL RESISTOR CONTROL LOGIC Unbuffered voltage capable of driving 60 k load LOGIC NETWORK SYNC interrupt facility APPLICATIONS Process control SYNC SCLK DIN DACGND Data acquisition systems Figure 1. Portable battery-powered instruments Table 1. Related Devices Digital gain and offset adjustment Part No. Description Programmable voltage and current sources AD5061 2.7 V to 5.5 V, 16-bit nanoDAC D/A, Programmable attenuators 4 LSBs INL, SOT-23. AD5063 2.7 V to 5.5 V, 16-bit nanoDAC D/A, 1 LSB INL, MSOP. AD5040/AD5060 2.7 V to 5.5 V, 14-/16-bit nanoDAC D/A, 1 LSB INL, SOT-23. GENERAL DESCRIPTION PRODUCT HIGHLIGHTS 1. Available in a tiny 8-lead SOT-23 package. The AD5062, a member of ADIs nanoDAC family, is a low power, single 16-bit unbuffered voltage-out DAC that operates 2. 16-bit accurate, 1 LSB INL. from a single 2.7 V to 5.5 V supply. The part offers a relative 3. Low glitch on power-up. accuracy specification of 1 LSB, and operation is guaranteed 4. High speed serial interface with clock speeds up to 30 MHz. monotonic with a 1 LSB DNL specification. The part uses a 5. Three power-down modes available to the user. versatile 3-wire serial interface that operates at clock rates up 6. Reset to known output voltage (zero-scale or mid-scale). to 30 MHz, and is compatible with standard SPI, QSPI, MICROWIRE, and DSP interface standards. The reference for the AD5062 is supplied from an external V pin. A reference REF buffer is also provided on-chip. The part incorporates a power- on reset circuit that ensures the DAC output powers up to zero scale or mid-scale and remains there until a valid write takes place to the device. The part contains a power-down feature that reduces the current consumption of the device to typically 300 nA at 5 V and provides software-selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface. Total unadjusted error for the part is <0.8 mV. This part exhibits very low glitch on power-up. 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. 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Trademarks and registered trademarks are the property of their respective owners. 04766-001AD5062 TABLE OF CONTENTS Features .............................................................................................. 1 Reference Buffer ......................................................................... 14 Applications ....................................................................................... 1 Serial Interface ............................................................................ 14 Functional Block Diagram .............................................................. 1 Input Shift Register .................................................................... 14 General Description ......................................................................... 1 SYNC Interrupt .......................................................................... 14 Product Highlights ........................................................................... 1 Power-On to Midscale or Zero Scale ....................................... 15 Revision History ............................................................................... 2 Software Reset ............................................................................. 15 Specif icat ions ..................................................................................... 3 Power-Down Modes .................................................................. 15 Timing Characteristics ..................................................................... 5 Microprocessor Interfacing ....................................................... 15 Absolute Maximum Ratings ............................................................ 6 Applicat ions ..................................................................................... 17 ESD Caution .................................................................................. 6 Choosing a Reference for the AD5062 .................................... 17 Pin Configuration and Function Descriptions ............................. 7 Bipolar Operation Using the AD5062 ..................................... 17 Typical Performance Characteristics ............................................. 8 Using AD5062 with a Galvanically Isolated Interface Chip . 18 Terminology .................................................................................... 13 Power Supply Bypassing and Grounding ................................ 18 Theory of Operation ...................................................................... 14 Outline Dimensions ....................................................................... 19 DAC Architecture ....................................................................... 14 Ordering Guide .......................................................................... 19 REVISION HISTORY 5/09Rev. 0 to Rev. A Changes to Figure 43 ...................................................................... 17 7/05Revision 0: Initial Version Rev. A Page 2 of 20