Single-Channel, 16-Bit, Current/Voltage Output DAC, Functional Safety Approved for Unipolar Current Output Data Sheet ADFS5758 configuration. The safe state for the ADFS5758 is open circuit/high FEATURES impedance. Functional safety approved to SIL 2/SC3 for unipolar current output by TV Rheinland, File Number 968/FSP The ADFS5758 is a single-channel, voltage and current output 2055.00/20 digital-to-analog converter (DAC) that operates with a power Current/voltage output available on a single terminal supply range from 33 V minimum on AVSS to +33 V maximum Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, on AVDD1 with a maximum operating voltage between the two rails 0 mA to 24 mA, 20 mA, 24 mA, 1 mA to +22 mA of 60 V. On-chip dynamic power control (DPC) minimizes Voltage output ranges (with 20% overrange): 0 V to 5 V, package power dissipation, which is achieved by regulating the 0 V to 10 V, 5 V, and 10 V supply voltage (V ) to the VI output driver circuitry from DPC+ OUT Advanced on-chip diagnostics 4.95 V to 27 V using a buck dc-to-dc converter, optimized for 12-bit ADC functioning as an independent monitoring minimum on-chip power dissipation. The CHART pin enables a function that can validate the output and accuracy. HART signal to be coupled onto the current output. On-chip reference The device uses a versatile 4-wire serial peripheral interface (SPI) DPC for thermal management that operates at clock rates of up to 50 MHz and is compatible with User-programmable offset and gain standard SPI, QSPI, MICROWIRE, DSP, and microcontroller Robust architecture, including output fault protection interface standards. The interface also features an optional SPI EMC test standards cyclic redundancy check (CRC) and a windowed watchdog timer. IEC 61000-4-6 conducted immunity (10 V, Class A) The ADFS5758 offers improved diagnostic features from its IEC 61000-4-3 radiated immunity (20 V/m, Class A) predecessors, such as an integrated independent 12-bit diagnostic IEC 61000-4-2 ESD (6 kV contact, Class B) analog-to-digital converter (ADC) that can be used to digitize both IEC 61000-4-4 electrical fast transient (EFT) (4 kV, Class B) internal and external nodes. IEC 61000-4-5 surge (4 kV, Class B) CISRP 11 radiated emissions (Class B) PRODUCT HIGHLIGHTS 32-lead, 5 mm 5 mm LFCSP 1. Functional safety approved to SIL 2/SC3 by TV Rheinland. 40C to +105C temperature range 2. Range of advanced diagnostic features, including an APPLICATIONS integrated ADC for high reliability. Process control 3. DPC using an integrated buck dc-to-dc converter for thermal Actuator control management. When used with the ADP1031, the ADFS5758 Channel isolated analog outputs enables eight channel to channel isolated outputs at <2 W Programmable logic controller (PLC) and distributed control dissipated power. system (DCS) applications 4. Programmable power control (PPC) mode to enable faster HART network connectivity settling time (15 s typical). 5. Highly robust with output protection from miswire events GENERAL DESCRIPTION (38 V). The ADFS5758 is a single-channel, 16-bit, current/voltage output DAC. The device is functional safety approved for unipolar current COMPANION PRODUCTS output and is a fully compliant item with a systematic capability of Product Family: AD5755-1, AD5422, AD5758, AD5753, AD5423 SC3, which can be used in safety-related applications up to SIL 2, HART Modem: AD5700, AD5700-1 according to IEC 61508. This arrangement allows a single External References: ADR431, ADR3425, ADR4525 ADFS5758 to be used to achieve SIL 2 for a nonredundant Digital Isolators: ADuM142D, ADuM141D Power: ADP1031, LT8300, ADP2360, ADM6339 Rev. 0 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 2020 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 ADFS5758 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Fault Protection .......................................................................... 36 Applications ...................................................................................... 1 Current Output .......................................................................... 36 Product Highlights ........................................................................... 1 HART Connectivity ................................................................... 37 Companion Products ....................................................................... 1 Digital Slew Rate Control .......................................................... 37 Revision History ............................................................................... 2 ADFS5758 Address Pins ........................................................... 37 Functional Block Diagram .............................................................. 3 SPI Interface and Diagnostics .................................................. 38 Specifications .................................................................................... 4 Windowed Watchdog Timer (WDT) ..................................... 39 AC Performance Characteristics .............................................. 10 User Digital Offset and Gain Control ..................................... 39 Timing Characteristics .............................................................. 11 DAC Output Update and Data Integrity Diagnostics .......... 40 Absolute Maximum Ratings ......................................................... 14 Lockable User Configuration Space ........................................ 41 Thermal Resistance .................................................................... 14 Use of Key Codes ....................................................................... 42 ESD Caution................................................................................ 14 Software Reset ............................................................................. 42 Pin Configuration and Function Descriptions .......................... 15 Calibration Memory CRC ......................................................... 42 Typical Performance Characteristics ........................................... 17 Background CRC Check ........................................................... 42 Current Output ........................................................................... 17 Internal Oscillator Diagnostics ................................................ 42 Voltage Output ........................................................................... 22 V External Capacitor Detection .......................................... 43 LDO DC-to-DC Block ......................................................................... 26 Sticky Diagnostic Results Bits .................................................. 43 Reference ..................................................................................... 27 Background Supply and Temperature Monitoring .............. 43 General ......................................................................................... 28 Output Fault................................................................................ 43 Terminology .................................................................................... 29 ADC Monitoring ........................................................................ 44 Theory of Operation ...................................................................... 31 Register Map ................................................................................... 50 Functional Safety Operation ..................................................... 31 Writing to Registers ................................................................... 50 DAC Architecture ...................................................................... 31 Reading from Registers ............................................................. 51 Serial Interface ............................................................................ 32 Programming Sequence to Enable the Output Correctly .... 54 Power-On State of the ADFS5758 ........................................... 32 Register Details ........................................................................... 56 Power Supply Considerations .................................................. 32 Applications Information ............................................................. 73 Device Features and Diagnostics .................................................. 34 Outline Dimensions ....................................................................... 75 Power Dissipation Control ....................................................... 34 Ordering Guide .......................................................................... 75 Interdie 3-Wire Interface .......................................................... 35 Voltage Output ........................................................................... 36 REVISION HISTORY 6/2020Revision 0: Initial Version Rev. 0 Page 2 of 75