Single-Channel, 12-/14-/16-Bit, Serial Input, Voltage Output DAC Evaluation Board EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB FEATURES GENERAL DESCRIPTION Full featured evaluation board for AD5662 AD5660 AD5640 AD5620 On-board reference On-board ADC for voltage readback Various link options Direct hook up to USB port of PC PC software for control of DACs This data sheet describes the evaluation board for the 12-bit AD5620, 14-bit AD5640, 16-bit AD5660, and 16-bit AD5662 single-channel DACs. The AD5620/AD5640/AD5660 have a maximum output voltage span of 5 V derived from an internal on-chip reference voltage of 2.5 V. The AD5662 has a maximum output voltage span of 5 V derived from an external reference voltage of 5 V. The reference voltage for this evaluation board is derived from the AD780 which has an output voltage of 2.5 V or 3 V. Therefore, for purpose of this evaluation, 3 V is the maximum output voltage span of the AD5662 using the AD780 reference. When using the evaluation board, refer to this data sheet along with the data sheets for the AD56xx family of parts available from Analog Devices, Inc. The evaluation board interfaces to the USB port of an IBMcompatible PC. The software available with the evaluation board allows the user to easily program the AD56xx . Rev. 0 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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2006 Analog Devices, Inc. All rights reserved. EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB TABLE OF CONTENTS Features .............................................................................................. 1 Software Operation .......................................................................4 General Description ......................................................................... 1 Schematics ..........................................................................................5 Revision History ............................................................................... 2 Ordering Information.......................................................................9 Operating the AD56XX Evaluation Board..................................... 3 Component Listing .......................................................................9 Power Supplies .............................................................................. 3 Ordering Guide .............................................................................9 Link Options ................................................................................. 3 ESD Caution...................................................................................9 Evaluation Board Software .............................................................. 4 Software Installation .................................................................... 4 REVISION HISTORY 6/06--Revision 0: Initial Version Rev. 0 | Page 2 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB OPERATING THE AD56XX EVALUATION BOARD POWER SUPPLIES LINK OPTIONS The AD56xx evaluation board can be powered from the USB port. This is the default setup. It can also be powered by an external supply using the J6 and J7 power connectors. A number of link and switch options on the evaluation board should be set for the required operating setup before using the board. Table 1 lists the default link options. The functions of these link options are described in detail in Table 2. The default setup is for control by the PC via the USB port. Both analog GND and DGND inputs are provided on the board. The analog GND and DGND planes are connected at one location close to the AD56xx. It is recommended not to connect analog GND and DGND elsewhere in the system to avoid ground loop problems. Table 1. Link Options Setup for PC Controls Each supply is decoupled to the relevant ground plane with 10 F and 0.1 F capacitors. Each device supply pin is also decoupled with a 10 F and 0.1 F capacitor pair to the relevant ground plane. Link No. LK1 LK2 LK3 LK4 LK5 LK6 LK7 LK8 LK9 Option (Default) INSERTED A REMOVED A (AD5620/AD5640/AD5660) B (AD5662 only) B B INSERTED (AD5620/AD5640/AD5660) REMOVED (AD5662 only) INSERTED INSERTED Table 2. Link Options Link No. LK1 LK2 LK3 LK4 LK5 LK6 LK7 LK8 LK9 Function This link connects the VFB pin to the VOUT pin of the AD56xx. This link selects whether the AD56xx evaluation board is controlled by the PC via the USB port or by an external source via the J1, J3, and J4 SMB connectors. * Position A: The evaluation board is controlled by the PC via the USB port. * Position B: The evaluation board is controlled by an external source via the J1, J3, and J4 SMB connectors. This link connects external resistors and capacitor loads to the VOUT pin of the AD56xx. This link selects the reference source. * Position A: The internal reference is the reference source (AD5660/AD5640/AD5620). * Position B: The on-board 2.5 V/3 V AD780 reference is the reference source (AD5662 only). This link selects the AVDD power supply source for the analog circuitry. * Position A: J6 is the AVDD analog circuitry power supply source. * Position B: The USB 5 V power supply is the AVDD analog circuitry power supply source. This link selects the DVDD power supply source for the digital circuitry. * Position A: J7 is the DVDD digital circuitry power supply source. * Position B: The USB 5 V power supply source is the digital circuitry power supply source. This link connects a 0.1 F capacitor to GND on the VREF output pin of the device (AD5620/AD5640/AD5660). This link connects the OP_SEL pin of the AD780 reference to ground, selecting a 3 V output. Leaving no connect gives a 2.5 V output. This link connects the VOUT pin of the AD56xx to the VIN pin of the AD7476 ADC so that the DAC output value can be monitored using the on-board ADC. Rev. 0 | Page 3 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB EVALUATION BOARD SOFTWARE SOFTWARE INSTALLATION The AD56xxEB evaluation kit includes self-installing software on CD-ROM. The software is compatible with Windows(R) 2000 and Windows(R) XP. If the setup file does not run automatically when you insert the CD, run the setup.exe file directly from the CD. 1. After the installation from the CD-ROM has completed, connect the AD56xx evaluation board to the USB port using the cable supplied. 2. The software detects the evaluation board. Follow the instructions on the dialog boxes that appear to complete the installation. 05540-003 Install the software before connecting the evaluation board to the USB port to ensure that the evaluation board is correctly recognized when connected to the PC. Figure 2. Main Window SOFTWARE OPERATION 1. From the Analog Devices menu, select Start > All Programs > Analog Devices >AD5620-40-60-62 >AD56xx Evaluation Software. 3. To program the DAC, type the data word in the HEX field of the Enter Data Word section. Then click Program DAC. 4. To read back the output voltage using the on-board ADC, click Read Voltage. For older PCs, click Start > Programs > Analog Devices > AD5620-40-60-62 >AD56xx Evaluation Software. The DAC output voltage for the AD5662 is given by The Device Selection dialog box opens, as shown in Figure 1. D VOUT = VREF x 65536 For the AD5620/AD5640/AD5660 parts, the DAC output voltage is calculated as D VOUT = 2 x VREF x N 2 where N = 12 for the AD5620, 14 for the AD5640, and 16 for the AD5660. 05540-002 5. Figure 1. Device Selection Dialog Box 2. Select a part number and click OK. The main window opens, as shown in Figure 2. From the Choose Power Down Option, select one of the following: * 1K to Gnd * 100 K to Gnd * Three State After selecting an option, the AD56xx powers down and the output goes to zero. To resume operation, select Normal Operation. Rev. 0 | Page 4 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB SCHEMATICS 3.3V 3.3V K LED ADP3303-3.3 C24 + 10F OUT1 OUT2 ERROR NR GND 4 DGND 1 2 6 3 C19 22pF 0603 U7 R9 0R C18 22pF 0603 C17 22pF 0603 DGND DGND 42 44 J10 USB-MINI-B VBUS D- D+ IO GND SHIELD DGND 54 1 2 3 4 5 9 8 33 34 35 36 37 38 39 40 DGND ADC_CS DIN SCLK SYNC 1 2 13 14 3.3V R18 10k C30 22pF C32 22pF C33 22pF C34 22pF C35 22pF C36 22pF 3 7 11 17 27 32 43 55 RESET *WAKEUP CLKOUT U8 CY7C68013-CSP D- D+ PA0/INT0 PA1/INT1 PA2/*SLOE PA3/*WU2 PA4/FIFOADR0 PA5/FIFOADR1 PA6/*PKTEND PA7/*FLD/SLCS ADC_SDATA XTALIN 10 12 26 28 41 53 56 TP20 TP19 16 SDA 15 SCL XTALOUT IFCLK RSVD 18 19 20 21 22 23 24 25 45 46 47 48 49 50 51 52 29 CTL0/*FLAGA 30 CTL1/*FLAGB 31 CTL2/*FLAGC RDY0/*SLRD RDY1/*SLWR 6 DGND PB0/FD0 PB1/FD1 PB2/FD2 PB3/FD3 PB4/FD4 PB5/FD5 PB6/FD6 PB7/FD7 PD0/FD8 PD1/FD9 PD2/FD10 PD3/FD11 PD4/FD12 PD5/FD13 PD6/FD14 PD7/FD15 4 5 Y1 24MHz C15 22pF 0603 C16 22pF 0603 DGND DGND DGND 3.3V TP15 TP16 TP18 TP17 05540-004 C28 22pF DGND DGND VCC VCC R5 100k R3 22k 3.3V AVCC R7 100k R4 22k DGND C21 22pF 0603 3.3V DGND 1 8 A0 VCC 2 7 U6 A1 WP 3 6 A2 24LC01 SCL 4 5 VSS SDA 3.3V C25 2.2pF 3.3V 3.3V 3.3V VCC VCC C22 22pF 0603 VCC VCC VCC 8 IN1 7 IN2 5 SD USB_5V + C20 22pF 0603 GND GND GND GND GND GND GND D2 A C7 10F C23 22pF 0603 AGND R6 1k DGND Figure 3. Schematic of Controller Circuitry Rev. 0 | Page 5 of 12 Figure 4. Schematic of AD56xx Circuitry Rev. 0 | Page 6 of 12 05540-005 C37 22pF 0603 DVDD 5 7 6 LK2 A B SYNC DIN SCLK SCLK DIN SYNC DVDD 3 DGND U5 AD5660BRJ VDD VFB 8 4 D1 7 D2 9 D3 12 D4 VOUT 4 VREF 2 IN EN GND 1 15 8 1 GND J4 SYNC 6 10 13 3 DVDD L2 BEAD + R8 1R5 C3 10F TP4 TP5 TP6 DVDD AVDD VDD 2 S1A U9 5 S2A ADG774 11 S3A 14 S4A 16 J3 DGND J1 DGND DIN DGND C4 10F SCLK C5 + 22pF 0603 S1B J7-2 DGND S2B LK6 A B S3B DVDD J7-1 S4B USB_5V 5 7 6 VDD 8 GND U1 AD5660BRM 1 VOUT 4 VREF 2 C6 0.1F LK1 TP13 TP14 VFB AVDD J6-2 AGND AVDD J6-1 3 SYNC DIN SCLK TP7 J8 C2 22pF 0603 LK5 B A LK9 TP10 VREF J5 C14 0.1F LK7 LK4 A B DAC_VOUT LK3 TP2 TP12 R2 0 C8 10F TP1 R1 + TP11 ADC_CS ADC_SDATA SCLK C1 200pF J2 3 2 C10 1F AVDD + C12 0.1F C11 10F U3 1 4 SCLK VDD 5 3 VIN SDATA 6 CS GND AD7476_ADC 2 AVDD C9 10nF TP8 TP9 OP_SEL TEMP GND 4 +VIN U4 AD780 VOUT LK8 8 6 C13 0.1F TP3 DAC_VOUT EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB 05540-006 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB 05540-007 Figure 5. Component Placement Drawing Figure 6. Component Side PCB Drawing Rev. 0 | Page 7 of 12 05540-008 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB Figure 7. Solder Side PCB Drawing Rev. 0 | Page 8 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB ORDERING INFORMATION COMPONENT LISTING Table 3. Qty 1 1 1 1 1 1 1 1 1 Reference Designator U1 U5 U3 U4 U6 U7 U8 U9 Y1 1 C1 6 4 1 1 19 1 1 1 6 1 2 5 4 1 2 C3, C4, C7, C8, C11, C24 C6, C12, C13, C14 C9 C10 C2, C5, C15 to C23, C28, C30, C32 to C37 C25 D2 J10 J1 to J5, J8 L2 J6, J7 LK1, LK3, LK7 to LK9 LK2, LK4 to LK6 R1 R2 R9 R3, R4 R5, R7 R18 R6 R8 TP1 to TP20 2 2 1 1 1 19 Description AD56xxBRM--MSOP-8 AD56xxBRJ--SOT-23-8 AD7476ART (ADC) AD780 24LC01 ADP3303AR-3.3 CY7C68013-CSP ADG774BRQ 24 MHz crystal 200 pF (0603 package) 10 F tantalum cap (TAJ-A package) 0.1 F multilayer ceramic cap 10 nF (0603 package) 1 F (0805 package) 22 pF (0603 package) 2.2 F (0603 package) LED USB Mini B Gold 50 SMB jack Bead Power connectors Header (2 x 1 pin) Header (3 x 1 pin) R1 (not inserted) 0 (0805 package) 0 (0603 package) 22 k (0603 package) 100 k (0603 package) 10 k (0603 package) 1 k (0603 package) 1.5 Testpoint T Supplier/Number Analog Devices, Inc. Analog Devices, Inc. Analog Devices, Inc. Analog Devices, Inc. Digikey 24LC64-I/SN-ND Analog Devices, Inc. CY7C68013-56LFC Analog Devices, Inc. FEC 569-872 FEC 422-6811 FEC 197-130 FEC 422-6859 FEC 422-6938 FEC 318-8899 FEC 722-005 Digikey 490-1552-1-ND FEC 359-9681 FEC 476-8309 FEC 310-682 FEC 581-094 FEC 151-785 FEC 511-705 FEC 512-047 FEC 772-239 FEC 772-227 FEC 911-276 FEC 911-471 FEC 911-975 FEC 911-239 FEC 758-267 FEC 240-333 ORDERING GUIDE Model EVAL-AD5620EB EVAL-AD5640EB EVAL-AD5660EB EVAL-AD5662EB Description Evaluation Board Kit Evaluation Board Kit Evaluation Board Kit Evaluation Board Kit ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. 0 | Page 9 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB NOTES Rev. 0 | Page 10 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB NOTES Rev. 0 | Page 11 of 12 EVAL-AD5620EB/EVAL-AD5640EB/EVAL-AD5660EB/EVAL-AD5662EB NOTES (c)2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB05540-0-6/06(0) Rev. 0 | Page 12 of 12 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc.: EVAL-AD5660DKZ EVAL-AD5660EBZ