EVAL-AD5570SDZ

Evaluation Board User Guide UG-384 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 Evaluation Board for the AD5570 16-Bit ±12 V/±15 V Serial Input Voltage Output DAC FEATURES EVALUATION BOARD DESCRIPTION Full-featured evaluation board for the AD5570 Link options PC control in conjunction with the Analog Devices, Inc., system demonstration platform PC software for control The EVAL-AD5570SDZ is a full-featured evaluation board that is designed to allow the user to easily evaluate all features of the AD5570 voltage output, 16-bit digital-to-analog converter (DAC). Components on the AD5570 evaluation board include SMB connectors for interfacing to other equipment, a 5 V voltage reference, and a ground force sense. Testpoints are provided on all of the digital interface signal lines for ease of monitoring. The user has the option of inserting both a resistive and capacitive load on the output of the AD5570 at C1 and R1. DEVICE DESCRIPTION The AD5570 is a single 16-bit serial input, voltage output DAC that operates from supply voltages of ±11.4 V up to ±16.5 V. INL and DNL are accurate to 1 LSB (maximum). The board can be controlled by the system demonstration platform (SDP) connector (J1). The SDP board allows the evaluation board to be controlled through the USB port of a Windows® XP (SP2 or later) or more recent 32-bit or 64-bit (Vista, Windows 7) PC using the AD5570 evaluation software. Complete specifications for the AD5570 are provided in the AD5570 data sheet, available from Analog Devices, and should be consulted in conjunction with this user guide when using the evaluation board. FUNCTIONAL BLOCK DIAGRAM PC USB PORT EXT +10V REFIN VOUT AD5570 DGND AGNDS AGND AD8675 Figure 1. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. VOUT Rev. 0 | Page 1 of 12 10579-001 SYSTEM DEMONSTRATION PLATFORM BOARD UG-384 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 On-Board Connectors ..................................................................3 Device Description ........................................................................... 1 Evaluation Board Software ...............................................................4 Evaluation Board Description......................................................... 1 Software Installation .....................................................................4 Functional Block Diagram .............................................................. 1 Software Operation .......................................................................4 Revision History ............................................................................... 2 Features of the AD5570 Evaluation Board Software ................5 Evaluation Board Hardware ............................................................ 3 Evaluation Board Schematics and Artwork ...................................6 Power Supplies .............................................................................. 3 Ordering Information .................................................................... 10 Link Options ................................................................................. 3 Bill of Materials ........................................................................... 10 REVISION HISTORY 3/12—Revision 0: Initial Version Rev. 0 | Page 2 of 12 Evaluation Board User Guide UG-384 EVALUATION BOARD HARDWARE POWER SUPPLIES Default Link Option Setup The following external supplies must be provided: The default link options are listed in Table 1. • Table 1. Default Link Options • +11.4 V to +16.5 V between the VDD and AGND inputs for the positive analog supply of the AD5570. −11.4 V to −16.5 V between the VSS and AGND inputs for the negative analog supply of the AD5570. The analog and digital planes are connected at one location, close to the AD5570. To avoid ground loop problems, it is recommended AGND and DGND not be connected elsewhere in the system. Each supply is decoupled to the relevant ground plane with 10 µF and 0.1 µF capacitors. Each device supply pin is also decoupled with a 10 µF and 0.1 µF capacitor pair to the relevant ground plane. Link Number LK1 LK2 LK3 Option Inserted Inserted Inserted ON-BOARD CONNECTORS There are four connectors on the AD5570 evaluation board PCB as outlined in Table 2. Table 2. On-Board Connectors LINK OPTIONS The link options on the evaluation board should be set for the required operating setup before using the board. The functions of the link options are described in Table 3. Connector J1 J5 VOUT VREF Function SDP board connector Analog power supply connector DAC output connector External reference voltage input connector Table 3. Link Options Link No. LK1 LK2 LK3 Description LK1 is used in conjunction with LK2 to select whether the on-board ground force sense buffer is used. When LK1 and LK2 are inserted, the ground force sense buffer is not used, the ground pins are connected directly to 0 V, and the buffer is removed from the ground loop. When LK1 and LK2 are removed, the ground force sense buffer is used. This link is used to select the internal or the external reference. When LK3 is inserted, the on-board reference is selected as the voltage reference source for the AD5570. When LK3 is removed, an external voltage reference can be applied to Connector VREF. Rev. 0 | Page 3 of 12 UG-384 Evaluation Board User Guide EVALUATION BOARD SOFTWARE SOFTWARE INSTALLATION SOFTWARE OPERATION The AD5570 evaluation kit includes self-installing software on a CD. The software is compatible with Windows XP (SP2), Vista, and Windows 7 (32-bit or 64-bit). If the setup file does not run automatically, you can run the setup.exe file from the CD. To launch the software, complete the following steps: Install the evaluation software before connecting the evaluation board and SDP board to the USB port of the PC to ensure that the evaluation system is correctly recognized when connected to the PC. 2. 1. After installation from the CD is complete, 10579-002 2. Power up the AD5570 evaluation board as described in the Power Supplies section. Connect the SDP board (via either Connector A or Connector B) to the AD5570 evaluation board and then to the USB port of your PC using the supplied cable. When the evaluation system is detected, proceed through any dialog boxes that appear. This completes the installation. Figure 2. Connectivity Error Alert 10579-003 1. From the Start menu, select Analog Devices > AD5570 > AD5570 Evaluation Software. The main window of the software opens (see Figure 3). If the evaluation system is not connected to the USB port when the software is launched, a connectivity error is displayed (see Figure 2). Connect the evaluation board to the USB port of the PC, wait a few seconds, click Rescan, and follow the instructions. Figure 3. Main Window Rev. 0 | Page 4 of 12 Evaluation Board User Guide UG-384 FEATURES OF THE AD5570 EVALUATION BOARD SOFTWARE The software allows the user to control all the functionality of the AD5570. The main features are as follows: • • • • Load DAC register with a 16-bit word and update the AD5570 output. Data readback of the contents of the input shift register. Power down/power up the AD5570. Clear the AD5570 output to 0 V. Data Readback Clicking the READ REGISTER button reads back and displays the current contents of the DAC register. Power Down/Power Up Each of these features is described in the following sections. Load DAC In the Input Data field, the user types the 16-bit word to be programmed to the AD5570 and clicks the WRITE TO DAC button. In LDAC synchronous loading mode, the WRITE TO DAC button writes the required data to the input shift register and toggles the LDAC signal, which then loads the DAC register and updates the output voltage. In LDAC asynchronous loading mode, the WRITE TO DAC button writes the required data to the input shift register, but the user toggles the LDAC signal by clicking the LDAC switch to load the DAC register and update the output voltage. This function allows the user to place the AD5570 in powerdown mode and to remove the AD5570 from power-down mode. Clicking the POWER DOWN switch places the AD5570 in power-down mode, at the same time the text on the button changes to POWER UP, indicating that clicking the button again removes the AD5570 from power-down mode. Clear Clicking the CLEAR switch causes the CLR signal of the AD5570 to be pulsed low, which has the effect of setting the output voltage to 0 V. Rev. 0 | Page 5 of 12 UG-384 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK REFIN AVDD LK3 6 VREF C16 10uF 0.1uF /LDAC /SYNC SCLK SDI SDO C10 VSS C11 TRIM GND LK1 U1 VOUT' REFIN VSS VDD PD SDO DIN SCLK SYNC LDAC CLR 4 15 2 1 VOUT 9 12 13 16 11 REFGND REFGND VOUT AGND AGNDS AD5570 DGND 10 8 7 6 5 4 3 5 C35 0.1uF /PD SDO SDI SCLK /SYNC /LDAC /CLR 0.1uF U2 0.1uF 0.1uF C12 2 ADR425ARZ C34 AVDD /PD + /CLR +VIN VOUT R1 C1 14 LK2 AVDD U5 3 AVDD 2 AVDD C4 0.1uF 7 + V+ - V- 6 4 AD8675ARZ C5 J5-1 C6 + C7 0.1uF 0.1uF 10uF VSS J5-2 AGND + C9 0.1uF 10579-004 C8 10uF VSS J5-3 VSS Figure 4. Schematic of the AD5570 Circuitry BMODE1: PULL UP WITH A 10K RESISTOR TO SET SDP TO BOOT FROM A SPI FLASH ON THE DAUGHTER BOARD 3.3V J1 /PD /LDAC (CONNECTED TO BLACKFIN GPIO - USE I2C_0 FIRST) USB_VBUS VIN: USE THIS PIN TO POWER THE SDP REQUIRES 5V 200MA RESET_IN BMODE1 UART_RX UART_TX GND GND NC NC SDP EEPROM_A0 NC STANDARD NC NC CONNECTOR NC NC NC NC GND GND NC NC NC NC TMR_C* TMR_D TIMERS TMR_A TMR_B GPIO6 GPIO7 GND GND GENERAL GPIO4 GPIO5 INPUT/OUTPUT GPIO2 GPIO3 GPIO0 GPIO1 SCL_1 SCL_0 I2C SDA_1 SDA_0 GND GND SPI_SEL1/SPI_SS SPI_CLK SPI_SEL_C SPI_MISO SPI SPI_SEL_B SPI_MOSI GND SPI_SEL_A SPORT_INT GND SPORT_DT3 * SPORT_TSCLK SPORT_DT2 * SPORT_DT0 SPORT SPORT_DT1 SPORT_TFS SPORT_DR1 SPORT_RFS SPORT_DR2* SPORT_DR0 SPORT_DR3* SPORT_RSCLK GND GND PAR_FS1 PAR_CLK PAR_FS3 PAR_FS2 PAR_A1 PAR_A0 PAR_A3 PAR_A2 GND GND PAR_CS PAR_INT PAR_RD PAR_WR PAR_D1 PAR_D0 PARALLEL PAR_D3 PAR_D2 PORT PAR_D5 PAR_D4 GND GND PAR_D7 PAR_D6 PAR_D9 PAR_D8 PAR_D11 PAR_D10 PAR_D13 PAR_D12 PAR_D14 GND GND PAR_D15 * PAR_D16 PAR_D17 * * PAR_D18 PAR_D19 * * PAR_D20 PAR_D21 * * PAR_D22 PAR_D23 * GND GND USB_VBUS VIO(+3.3V) GND GND GND GND NC NC *NC ON BLACKFIN SDP VIN NC 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 BOARD ID EEPROM (24LC32) MUST BE ON I2C BUS 0, R4 100K R5 U4 DNP 1 2 3 4 R2 100K A0 A1 A2 VSS VCC WP SCL SDA 8 7 6 5 24LC32A-I/MS /CLR SCL_0 SDA_0 SCLK SDO SDI /SYNC MAIN I2C BUS (CONNECTED TO BLACKFIN TWI - PULL UP RESISTORS NOT REQUIRED) R3 100K 3.3V VIO: USE TO SET IO VOLTAGE MAX DRAW 20MA Figure 5. Schematic of the SDP Board Connector Rev. 0 | Page 6 of 12 3.3V 10579-005 I2C BUS 1 IS COMMON ACROSS BOTH CONNECTORS ON SDP - PULL UP RESISTORS REQUIRED 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 UG-384 10579-006 Evaluation Board User Guide 10579-007 Figure 6. Component Placement Schematic Figure 7. Top Printed Circuit Board (PCB) Layer Schematic Rev. 0 | Page 7 of 12 Evaluation Board User Guide 10579-008 UG-384 10579-009 Figure 8. Inner First PCB Layer Schematic Figure 9. Inner Second PCB Layer Schematic Rev. 0 | Page 8 of 12 UG-384 10579-010 Evaluation Board User Guide Figure 10. Bottom PCB Layer Schematic Rev. 0 | Page 9 of 12 UG-384 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 4. Reference Designator /CLR, /LDAC, /PD, /SYNC, REFIN, SCLK, SDI, SDO, USB_VBUS, VOUT' C1, C4, C5, C7, C9, C10, C11, C12, C16, C35 C6, C8, C34 J1 J5 LK1, LK2, LK3 Part Description Testpoint Part Number 20-313137 Stock Code FEC 8731144 Gold plated pin receptacles 73007015 Analog Devices 73007015 Capacitor +, Case B, 10 µF, 20 V 120-way connector, 0.6 mm pitch 3-pin terminal block, 5 mm pitch Jumper block, 2 pins, 0.1" spacing TAJB106K020RNJ FX8-120S-SV(21) CTB5000/3 M20-9990246 R1 R2, R3, R4 R5 U1 Gold plated pin receptacle, 4.7 kΩ SMD resistor, 100 kΩ SMD resistor 16-bit ±12 V/±15 V serial input voltage output DAC 5 V reference 32 kB I2C Serial EEPROM, MSOP8 Single op amp, 8-lead SOIC Jack SMB, straight 73007015 MC 0.063W 0603 1% 100K N/A AD5570BRSZ FEC 197427 FEC 1324660 FEC 151790 FEC 1022247 and FEC 150-411 Analog Devices 73007015 FEC 9330402 Not inserted AD5570BRSZ ADR425ARZ 24LC32A-I/MS AD8675ARZ 1-1337482-0 ADR425ARZ FEC 1331330 AD8675ARZ FEC 1206013 U2 U4 U5 VOUT, VREF Rev. 0 | Page 10 of 12 Evaluation Board User Guide UG-384 NOTES Rev. 0 | Page 11 of 12 UG-384 Evaluation Board User Guide NOTES 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. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. 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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. ©2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG10579-0-3/12(0) Rev. 0 | Page 12 of 12