12-/14-Bit High Bandwidth Multiplying DACs with Serial Interface Data Sheet AD5444/AD5446 FEATURES FUNCTIONAL BLOCK DIAGRAM V V DD REF 12 MHz multiplying bandwidth INL of 0.5 LSB at 12 bits R FB R Pin-compatible 12-/14-bit current output DAC AD5444/ I 1 OUT AD5446 2.5 V to 5.5 V supply operation 12-BIT R-2R DAC 10-lead MSOP package I 2 OUT 10 V reference input 50 MHz serial interface DAC REGISTER 2.7 MSPS update rate POWER-ON RESET Extended temperature range: 40C to +125C INPUT LATCH 4-quadrant multiplication SYNC Power-on reset with brownout detection CONTROL LOGIC AND SCLK SDO INPUT SHIFT REGISTER 0.4 A typical current consumption SDIN Guaranteed monotonic GND APPLICATIONS Figure 1. Portable, battery-powered applications Waveform generators Analog processing Instrumentation applications Programmable amplifiers and attenuators Digitally controlled calibration Programmable filters and oscillators Composite video Ultrasound Gain, offset, and voltage trimming GENERAL DESCRIPTION 1 The AD5444/AD5446 are CMOS 12-bit and 14-bit, current The applied external reference input voltage (V ) determines REF output, digital-to-analog converters (DACs). Operating from a the full-scale output current. These parts can handle 10 V single 2.5 V to 5.5 V power supply, these devices are suited for inputs on the reference, despite operating from a single-supply battery-powered and other applications. power supply of 2.5 V to 5.5 V. An integrated feedback resistor (R ) provides temperature tracking and full-scale voltage output FB As a result of the CMOS submicron manufacturing process, when combined with an external current-to-voltage precision these parts offer excellent 4-quadrant multiplication char- amplifier. The AD5444/AD5446 DACs are available in small acteristics of up to 12 MHz. 10-lead MSOP packages, which are pin-compatible with the These DACs use a double-buffered, 3-wire serial interface that AD5425/AD5426/AD5432/AD5443 family of DACs. is compatible with SPI, QSPI, MICROWIRE, and most DSP The EV-AD5443/46/53SDZ board is available for evaluating interface standards. On power-up, the internal shift register and DAC performance. For more information, see the UG-327 latches are filled with 0s, and the DAC output is at zero scale. evaluation board user guide. 1 US Patent Number 5,689,257. Rev. F Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. 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Technical Support www.analog.com 04588-001AD5444/AD5446 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 DAC Section................................................................................ 15 Applications ....................................................................................... 1 Circuit Operation ....................................................................... 15 General Description ......................................................................... 1 Single-Supply Applications ....................................................... 17 Functional Block Diagram .............................................................. 1 Adding Gain ................................................................................ 17 Revision History ............................................................................... 2 Divider or Programmable Gain Element ................................ 17 Specifications ..................................................................................... 3 Amplifier Selection .................................................................... 18 Timing Characteristics ................................................................ 5 Reference Selection .................................................................... 18 Absolute Maximum Ratings ............................................................ 6 Serial Interface ................................................................................ 20 ESD Caution .................................................................................. 6 Microprocessor Interfacing ....................................................... 21 Pin Configuration and Function Descriptions ............................. 7 PCB Layout and Power Supply Decoupling ................................ 23 Typical Performance Characteristics ............................................. 8 Overview of Current Output Devices .......................................... 24 Terminology .................................................................................... 14 Outline Dimensions ....................................................................... 25 General Description ....................................................................... 15 Ordering Guide .......................................................................... 25 REVISION HISTORY 2/16Rev. E to Rev. F Changes to Ordering Guide .......................................................... 28 Changes to Applications Section .................................................... 1 Changes to Features .......................................................................... 1 Deleted Positive Output Voltage Section and Figure 41 Changes to General Description ..................................................... 1 Renumbered Sequentially .............................................................. 17 Changes to Table 1 ............................................................................. 3 Changes to Figure 22 ...................................................................... 10 Changes to Adding Gain Section ................................................. 17 Changes to ADSP-2191M to AD5444/AD5446 Interface Changes to Figure 23 ...................................................................... 10 Section, Blackfin to AD5444/AD5446 Interface Section, Changes to Table 9 .......................................................................... 19 Figure 46, Figure 47, and Figure 48 .............................................. 21 Changes to Table 12 ....................................................................... 27 Changes to Overview of Current Output Devices Section Updated Outline Dimensions ....................................................... 28 Heading ............................................................................................ 24 Changes to Ordering Guide .......................................................... 28 Changes to Ordering Guide .......................................................... 25 4/05Rev. 0 to Rev. A 6/13Rev. D to Rev. E Added AD5446 ................................................................... Universal Changes to General Description Section ...................................... 1 Changes to Features .......................................................................... 1 Change to Figure 46 and Figure 47 .............................................. 21 Changes to General Description ..................................................... 1 Changes to Ordering Guide .......................................................... 25 Changes to Specifications ................................................................. 3 Inserted Figure 7 Renumbered Sequentially................................. 9 4/12Rev. C to Rev. D Inserted Figure 9 Renumbered Sequentially................................. 9 Changes to General Description Section ...................................... 1 Inserted Figure 13 Renumbered Sequentially ........................... 10 Deleted Evaluation Board for the DAC Section ......................... 23 Changes to Figure 22 ...................................................................... 11 Deleted Power Supplies for the Evaluation Board Section ....... 23 Changes to Figure 23 ...................................................................... 11 Deleted Figure 54 Renumbered Sequentially............................. 24 Changes to Serial Interface ............................................................ 20 Deleted Figure 55 and Figure 56 ................................................... 25 Changes to Figure 44 ...................................................................... 20 Updated Outline Dimensions ....................................................... 25 Changes to Figure 45 ...................................................................... 20 Changes to Ordering Guide .......................................................... 25 Updated Outline Dimensions ....................................................... 28 Deleted Figure 57 ............................................................................ 26 Changes to Ordering Guide .......................................................... 28 10/04Revision 0: Initial Version 4/07Rev. B to Rev. C Changes to Table 9 .......................................................................... 19 Rev. F Page 2 of 28