6-Channel, 14-Bit, Current Output DAC with On-Chip Reference, SPI Interface Data Sheet AD5770R FEATURES APPLICATIONS 6-channel, current output DAC Photonics control 14-bit resolution LED driver programmable current source Programmable output current ranges Current mode biasing Channel 0: 0 mA to 300 mA, 60 mA to +300 mA, 60 mA GENERAL DESCRIPTION to 0 mA The AD5770R is a 6-channel, 14-bit resolution, low noise, Channel 1: 0 mA to 140 mA, 0 mA to 250 mA programmable current output, digital-to-analog converter (DAC) Channel 2: 0 mA to 55 mA, 0 mA to 150 mA for photonics control applications. The device incorporates a Channel 3, Channel 4, Channel 5: 0 mA to 45 mA, 0 mA to 1.25 V, on-chip voltage reference, a 2.5 k precision resistor for 100 mA reference current generation, die temperature, output monitoring All current sourcing output ranges scale back by up to 0.5 functions, fault alarm, and reset functions. 1.25 V, on-chip voltage reference Integrated precision reference resistor The AD5770R contains five 14-bit resolution current sourcing SPI interface DAC channels and one 14-bit resolution current sourcing and Reset function sinking DAC channel. Output current monitor Channel 0 can be configured to sink up to 60 mA and source up Compliance voltage monitor to 300 mA. Channel 1 to Channel 5 have multiple programmable Die temperature monitor output current sourcing ranges set by register access. Integrated thermal shutdown 49-ball, 4 mm 4 mm WLCSP package Each DAC operates with a wide power supply rail from 0.8 V to Operating temperature: 40C to +105C AVDD 0.4 V for optimizing power efficiency and thermal power dissipation. The AD5770R operates from a 2.9 V to 5.5 V AVDD supply and is specified over the 40C to +105C temperature range. FUNCTIONAL BLOCK DIAGRAM IOVDD DVDD AVDD CREG CDAMP IDACx PVDDx AD5770R CS INPUT DAC DAC IDAC0 REGISTER REGISTER SCLK SDI SDO INPUT DAC DAC IDAC1 REGISTER REGISTER INTERFACE LOGIC ALARM LDAC INPUT DAC DAC IDAC5 RESET REGISTER REGISTER 1.25V REFERENCE VREF IO CREF MUX OUT TEMPERATURE 2.5k INTERNAL SENSOR IREF RESISTOR REFGND AVEE DGND AGND PVEE0 Figure 1. Rev. A 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 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. MUX 16128-001AD5770R Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Load DAC .................................................................................... 28 Applications ....................................................................................... 1 Input Page Mask Register .......................................................... 28 General Description ......................................................................... 1 DAC Page Mask Register ........................................................... 28 Functional Block Diagram .............................................................. 1 Output Stages .............................................................................. 28 Revision History ............................................................................... 2 Output Filter ............................................................................... 30 Specif icat ions ..................................................................................... 3 Output Current Scaling ............................................................. 30 AC Performance Characteristics ................................................ 6 ....................................................................................... 30 ALARM Timing Specifications .................................................................. 7 Applications Information .............................................................. 33 Timing Diagrams .......................................................................... 8 Microprocessor Interfacing ....................................................... 33 Absolute Maximum Ratings ............................................................ 9 AD5770R to SPI Interface ......................................................... 33 Thermal Resistance ...................................................................... 9 Thermal Considerations ............................................................ 33 ESD Caution .................................................................................. 9 Combining Channels to Increase Current Range .................. 33 Pin Configuration and Function Descriptions ........................... 10 Layout Guidelines....................................................................... 33 Typical Performance Characteristics ........................................... 12 Register Summary .......................................................................... 35 Terminology .................................................................................... 24 SPI Configuration Registers ...................................................... 35 Theory of Operation ...................................................................... 25 AD5770R Configuration Registers .......................................... 35 Digital to Analog Converter ..................................................... 25 Register Details ............................................................................... 38 Precision Reference Current Generation ................................ 25 Outline Dimensions ....................................................................... 59 Diagnostic Monitoring .............................................................. 25 Ordering Guide .......................................................................... 59 Serial Interface ............................................................................ 26 Reset Function ............................................................................ 28 REVISION HISTORY 11/2019Rev. 0 to Rev. A Changes to AVEE Supply Current Parameter, Table 1 ................ 5 Changes to Figure 2 .......................................................................... 8 Changes to Figure 41 Caption, Figure 42 Caption, Figure 43 Caption, Figure 44 Caption, Figure 45 Caption, and Figure 46 Caption .................................................................... 18 Changes to Figure 47 Caption ....................................................... 19 Changes to Output Current Scaling Section ............................... 30 Changes to Table 10 ........................................................................ 31 Changes to Table 11 ........................................................................ 34 2/2019Revision 0: Initial Version Rev. A Page 2 of 59