EVAL-AD5676RSDZ

EVAL-AD5676SDZ/ EVAL-AD5676RSDZ User Guide UG-814 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluating the AD5676/AD5676R Octal, 16-Bit nanoDAC+ FEATURES GENERAL DESCRIPTION Full featured evaluation board for the AD5676/AD5676R Various link options PC control in conjunction with the Analog Devices, Inc., EVAL-SDP-CB1Z system demonstration platform (SDP) This user guide details the operation of the evaluation boards for the AD5676/AD5676R octal channel, voltage output digitalto-analog converter (DAC). EVALUATION KIT CONTENTS EVAL-AD5676SDZ/EVAL-AD5676RSDZ evaluation board ADDITIONAL EQUIPMENT AND SOFTWARE NEEDED EVAL-SDP-CB1Z SDP board, includes a USB cable Bench power supply (6 V dc) PC running Windows 7 or later with USB 2.0 port ONLINE RESOURCES Documents Needed AD5676/AD5676R data sheet EVAL-AD5676SDZ/EVAL-AD5676RSDZ user guide Required Software ACE software The EVAL-AD5676SDZ/EVAL-AD5676RSDZ evaluation boards help users to quickly prototype new AD5676/AD5676R circuits and reduce design time. The AD5676/AD5676R operate from a single 2.7 V to 5.5 V supply. The AD5676R has an internal 2.5 V reference giving a maximum output voltage of 2.5 V or 5 V. The AD5676 does not have an internal reference; therefore, an ADR431 is provided on-board as a 2.5 V reference source. A different reference voltage can be applied via the EXT_REF SMB connector, if required. Full data on the AD5676/AD5676R are available in the respective product data sheets, available from Analog Devices, which should be consulted in conjunction with this user guide when using the evaluation boards. The evaluation boards interface to the USB port of a PC via the SDP board. The Analysis Control Evaluation (ACE) software is available for use with the evaluation board to allow the user to program the AD5676/AD5676R. The evaluation boards are compatible with the EVAL-SDP-CB1Z Blackfin® SDP controller board (SDP-B), which is available for order on the Analog Devices website at www.analog.com. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 12 UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Memory Map .................................................................................6 Evaluation Kit Contents ................................................................... 1 Evaluation Board Hardware .............................................................7 Additional Equipment and Software Needed................................... 1 Power Supplies ...............................................................................7 Online Resources .............................................................................. 1 Input Signals...................................................................................7 General Description ......................................................................... 1 Output Signals ...............................................................................7 Revision History ............................................................................... 2 Link Configuration Options ............................................................8 Typical Evaluation Setup ................................................................. 3 Setup Conditions ...........................................................................8 Getting Started .................................................................................. 4 Evaluation Board Circuitry ..............................................................9 Installing the Software ................................................................. 4 Evaluation Board Schematics........................................................ 10 Initial Setup ................................................................................... 4 Bill of Materials ............................................................................... 12 Block Diagram And Description .................................................... 5 REVISION HISTORY 5/2017—Rev. 0 to Rev. A Changes to Features Section, Additional Equipment and Software Needed Section, Online Resources Section, and General Description Section ........................................................... 1 Changes to Installing the Software Section, Changed Evaluation Board Setup Procedures Section to Initial Set-Up Section ......... 4 Added Figure 3 and Figure 4; Renumbered Sequentially ........... 4 Added Block Diagram and Description Section and Figure 4 ........ 5 Added Table 1; Renumbered Sequentially .................................... 5 Added Memory Map Section, Figure 5, and Figure 6 ................. 6 Deleted How to Use the Software Section ..................................... 8 Changes to Table 4 .......................................................................... 12 3/2015—Revision 0: Initial Version Rev. A | Page 2 of 12 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide UG-814 TYPICAL EVALUATION SETUP SDP BOARD AD5676R EVALUATION BOARD 0.250A 6V ±25V COM POWER SUPPLY CONNECTORS 12993-001 6.000V Figure 1. Rev. A | Page 3 of 12 UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide GETTING STARTED INSTALLING THE SOFTWARE The EVAL-AD5676SDZ and EVAL-AD5676RSDZ evaluation boards use the Analog Devices ACE software. ACE is a desktop software application that allows the evaluation and control of multiple evaluation systems. The ACE installer installs necessary SDP drivers and .NET Framework 4 by default. Install ACE before connecting the SDP board to the USB port of the PC to ensure that the SDP board is recognized when it connects to the PC. Use the following link to download the software, and access full instructions on how to install and use this software: http://www.analog.com/ace. After the installation is finished, the EVAL-AD5676SDZ and EVAL-AD5676RSDZ evaluation board plug-ins appear when you open ACE. Figure 2. Board View of the EVAL-AD5676RSDZ INITIAL SETUP 1. 2. 3. 4. 5. Connect the evaluation board to the SDP-B board and connect the USB cable between the SDP-B board and the PC. Power the SDP-B and evaluation board by connecting 6 V dc to the J3 connector. Run the ACE application. The EVAL-AD5676SDZ/ EVAL-AD5676RSDZ board plug-ins appear in the attached hardware section of the Start tab. Double-click on the board plug-in to open the board view seen in Figure 2. The chip block diagram can be accessed by double-clicking on the AD5676 or AD5676R chip. This view provides a basic representation of functionality of the board. The main functions are labeled in Figure 3. Rev. A | Page 4 of 12 12993-003 To set up the evaluation board, take the following steps: Figure 3. Chip Block Diagram View for the AD5676R EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide UG-814 BLOCK DIAGRAM AND DESCRIPTION Some of the blocks and their functions are described here as they pertain to the evaluation board. The full screen block diagram is shown in Figure 4 and Table 1 describe the functionality of each block. 12993-004 The EVAL-AD5676SDZ/EVAL-AD5676RSDZ software is organized so that it appears similar to the functional block diagram shown in the data sheets. In this way, it is easy to correlate the functions on the board with the description in the data sheets. A full description of each block, register, and its settings is given in the AD5676/AD5676R data sheets. Figure 4. Block Diagram with Labels Table 1. Block Diagram Functions Label A B C D E F G H I J K Function The configuration wizard sets up the initial configuration for the board. From the Output Gain drop-down menu, the reference gain case be selected. A gain of 1 is the default. After setting up the initial configuration, click Apply and the values are applied. These settings can be modified at any stage while testing. The GPIO buttons act as external GPIO pulses to the LDAC and RESET pins. The LDAC button pushes data from both input registers (E) to the DAC registers (F). The RESET button clears all data from input registers and DAC registers. These buttons are live, so there is no need to click Apply Changes (K). The Command Option drop-down menu selects how the data being transferred to the device affects the Input and DAC registers. After a data value is entered in an input register (see E), this menu determines if the data is transferred to the input register only, or to the channel input register (E) and channel DAC register (F). The Change Page Display drop-down menu selects which page of 4 DAC channel settings are displayed The input registers transfer 16-bit data word to the device. Upon clicking the Apply Changes (K), this 16-bit data word is transferred to the device. The DAC registers display the value that is currently present in the DAC register on the device. The DAC registers can be updated by selecting the appropriate command option or by toggling LDAC (B). Software reset returns the board and software to default values. This button is live, so there is no need to click Apply Changes. The Load LDAC buttons per channel control to control the loading of Input Register contents to the DAC Register. The DAC Configuration options provide access to per channel configuration options such as power-down options and hardware LDAC mask setting. Selecting enabled from the internal reference setting enables the on-chip reference for the board, if disabled is selected, an external reference must be applied. This control is only available on the AD5676R. The Apply Changes button applies all modified values to the device. Note that if an evaluation board is not connected, values entered into the Input Registers are not transferred to the DAC registers. Rev. A | Page 5 of 12 UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide MEMORY MAP 12993-005 All registers are fully accessible from the memory map tab; this allows registers to be edited at a bit level. The bits shaded in dark gray are read only bits and cannot be accessed from ACE; all other bits are toggled. Apply Changes is used to transfer data to the device. All changes here correspond to the block diagram; for example, if the internal register bit is enabled, it shows as enabled on the block diagram. Any bits or registers that are in bold are modified values that have not been transferred to the board. After Apply Changes is clicked, the data is transferred to the board. 12993-106 Figure 5. AD5676R Memory Map Figure 6. AD5676R Memory Map with Unapplied Changes in DAC Input 0 Register Rev. A | Page 6 of 12 Evaluation Board User Guide UG-815 EVALUATION BOARD HARDWARE POWER SUPPLIES INPUT SIGNALS To use the evaluation board with the SDP-B board, a 6 V dc power supply is required, which is connected to Connector J3. The evaluation board can be used without the SDP-B board, in which case, the J1 and J2 connectors are used as the power supply inputs. When the SDP-B board is used to control the evaluation board, the digital input signals are applied to Connector J4. When the SDP-B board is not used, apply the digital signal to Connector J5. All supplies are decoupled to ground with 10 μF tantalum and 0.1 μF ceramic capacitors. Voltage External, VLOGIC supply Analog power supply, VCC 6 V dc board positive power supply EXT_REF AGND EXT_VDD DGND VREF I2C INTERFACE 10-WAY HEADER VOUT0 VOUT1 AD5675/ AD5675R VOUT6 VOUT7 Figure 7. Evaluation Board Block Diagram Rev. A | Page 7 of 13 12995-002 Connector Number J1 J2 J3 ADR431 2.5V REF EEPROM SDP CONNECTOR Table 2. Power Supply Connectors EXT_VL The DAC output voltages are available on the SMB connectors, VOUT0 to VOUT7. +6V AGND Both AGND and DGND inputs are provided on the board. The AGND and DGND planes are connected at one location close to the AD5676/AD5676R. It is recommended that AGND and DGND not be connected elsewhere in the system to avoid ground loop problems. OUTPUT SIGNALS UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide LINK CONFIGURATION OPTIONS Multiple link (LKx) options must be set correctly to select the appropriate operating setup before using the evaluation board. The functions of these options are described in Table 3. board. The evaluation boards can be operated in SDP controlled mode to be used with the SDP-B board, or the evaluation board can be used in standalone mode. SETUP CONDITIONS The Default Position column of Table 3 shows the default positions in which the links are set when the evaluation board is packaged. When the board is shipped, it is set up to operate with the SDP-B board in SDP controlled mode. Before applying power and signals to the evaluation board, ensure that all link positions are as required by the operating mode. There are two modes in which to operate the evaluation Table 3. Link Functions Link No. LK1 LK2 LK3 LK4 LK5 1 Function This link selects the DAC analog voltage source. Position A selects the internal voltage source (INT_VCC) from the ADP3331 (U1). Position B selects an external supply voltage (EXT_ VCC). This link selects the DAC digital voltage source. Position A selects the digital voltage source from the SDP-B board (V_IO). Position B selects an external digital supply voltage (EXT_VLOGIC). This link selects the reference source. Position A selects the internal reference of the AD5676R as the reference source or an external reference source from the SMB connector EXT_REF. Use only Position A with the EVAL-AD5676RSDZ. Position B selects U6 as the 2.5 V reference source. Do not use Position B with the EVAL-AD5676RSDZ. This link selects the RSTSEL setting of the AD5676/AD5676R. Position A selects DAC power up to zero scale. Position B selects DAC power up to midscale. This link sets the internal gain setting of the AD5676/AD5676R. Position A selects software control of the gain via the SDP-B board. Position B selects a gain of 0 V to 2 × VREF. Position C selects a gain of 0 V to VREF. Position A is the default for the EVAL-AD5676RSDZ. Position B is the default for the EVAL-AD5676SDZ. Rev. A | Page 8 of 12 Default Position A A A/B 1 A A EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide UG-814 EVALUATION BOARD CIRCUITRY The EVAL-AD5676SDZ/EVAL-AD5676RSDZ evaluation boards allow the function and performance of the AD5676/ AD5676R to be easily tested. Each evaluation board contains two voltage regulators that generate the analog and digital power supplies and that also power the SDP-B board, if it is connected. The two regulators are powered via a 6 V supply attached to Connector J3. Alternatively, a separate analog supply can be attached via Connector J2, and an external VLOGIC supply can be connected to Connector J1. Control of the AD5676/AD5676R is typically performed by the SDP-B board, which is attached to Connector J4. The SDP-B board allows the software provided with the kit to be used to load register values, set the voltage of the DAC outputs, and write to the control register of the AD5676/AD5676R. When the SDP-B board is not required, the control signals can be applied to the AD5676/AD5676R by connecting them to the relevant pins on Connector J5. The DAC output voltages are available on the SMB connectors, VOUT0 to VOUT7. Rev. A | Page 9 of 12 UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide EVALUATION BOARD SCHEMATICS 12993-006 Figure 8. EVAL-AD5676SDZ/EVAL-AD5676RSDZ Schematic, Page 1 of 2 Rev. A | Page 10 of 12 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide UG-814 12993-007 Figure 9. EVAL-AD5676SDZ/EVAL-AD5676RSDZ Schematic, Page 2 of 2 Rev. A | Page 11 of 12 UG-814 EVAL-AD5676SDZ/EVAL-AD5676RSDZ User Guide BILL OF MATERIALS Table 4. Qty 7 7 1 17 Description Capacitor, Case A, 10 µF, 10 V Capacitor, 100 nF, 50 V, 0603 Capacitor, 1 µF, 10 V, 0603 Do not populate Supplier/Part Number 1 FEC 197-130 FEC 8820023 FEC 318-8840 Not inserted 3 1 1 1 3 1 1 1 1 1 1 4 2 9 1 1 1 1 1 Reference Designator C1, C3, C5, C7 to C9, C16 C2, C4, C6, C10 to C12, C15 C14 C13, C17 to C19, C24 to C27, R5 to R7, R10, R12 to R16 J1 to J3 J4 J5 L1 LK1 to LK3 LK4 LK5 R1 R2 R3 R4 R8, R9, R19, R20 R17, R18 TP1 to TP9 U1 U2 U3 U6 U8 2-pin terminal block 120-way female connector 10-pin (2 × 5), 0.1" header Ferrite bead, 600 Ω at 100 MHz Jumper block using 3-pin SIP header 2-way link option 3-way link option Resistor, 1 MΩ, 0.063 W, 1%, 0603 Resistor, 300 kΩ, 0.1 W, 1%, 0603 Resistor, 1.5 Ω, 0.063 W, 5%, 0603 Resistor, 0 Ω, 0805 10 kΩ, SMD, resistor 100 kΩ, SMD, resistor Red test point Adjustable LDO regulator 32k I2C serial EEPROM 5 V, fixed, adjustable voltage regulator Ultralow noise XFET voltage reference Octal,16-bit nanoDAC+ 9 VOUT0 to VOUT7, EXT_REF Straight PCB mount SMB jack, 50 Ω FEC 151789 FEC 1324660 or Digikey H1219-ND FEC 1022244 (36-pin strip) Digikey 490-1024-1-ND FEC 1022248 and 150410 FEC 1022244 FEC 9331662 Digikey RMCF1/161MFRCT-ND Digikey 541-300KHCT-ND FEC 9331832 FEC 9333681 FEC 933-0399 FEC 9330402 FEC 8731144 (pack) Analog Devices ADP3331ARTZ FEC 1331330 Analog Devices ADP3367ARZ Analog Devices ADR431BRZ Analog Devices AD5676RARUZ or AD5676ARUZ FEC 1206013 1 FEC is Farnell Electronics Components. ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. 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Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed. ©2015–2017 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG12993-0-5/17(A) Rev. A | Page 12 of 12