DEMO MANUAL DC2085 LTC2000, LTC2000A 16-, 14-, 11-Bit, 2.5Gsps to 2.7Gsps DACs Description Demonstration circuit 2085 supports the LTC(R)2000 and LTC2000A, a high speed, high dynamic range family of DACs. It was specially designed for applications that require differential DC coupled outputs. DC2085 supports the complete family of the LTC2000 including 16, 14 and 11 bit parts. For all the variations see Table 1. The circuitry on the analog outputs is optimized for analog frequencies from DC-1.08GHz. Design files for this circuit board are available at http://www.linear.com/demo/DC2085 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Table 1. DC2085 Variants DC2085 VARIANTS PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE OUTPUT FREQUENCY DC2085A-A LTC2000-16 16-Bit 2.5Gsps DC-1000MHz DC2085A-B LTC2000-14 14-Bit 2.5Gsps DC-1000MHz DC2085A-C LTC2000-11 11-Bit 2.5Gsps DC-1000MHz DC2085A-D LTC2000A-16 16-Bit 2.7Gsps DC-1080MHz DC2085A-E LTC2000A-14 14-Bit 2.7Gsps DC-1080MHz DC2085A-F LTC2000A-11 11-Bit 2.7Gsps DC-1080MHz Performance Summary Specifications are at TA = 25C PARAMETER CONDITIONS MIN TYP MAX Supply Voltage - DC2085 This supply must provide up to 800mA 4.8 5.0 5.2 Sampling Frequency (Sample Clock Frequency) UNITS V 300 2500 or 2700 MHz 0 15 dBm Differential Input Voltage Range 0.2 0.6 V Common Mode Voltage Range 0.4 1.8 V Sample Clock Level (Single-Ended) Use a 50 Source LVDS Inputs dc2085afa 1 DEMO MANUAL DC2085 Quick Start Procedure DC2085 is easy to set up to evaluate the performance of the LTC2000. Refer to Figure 1 for proper measurement equipment set-up and follow the procedure below: Setup The Altera Stratix IV GX FPGA Development Kit was supplied with the DC2085 demonstration circuit. Follow the Altera Stratix IV demo manual to install the required software and for connecting the Altera Stratix IV to the DC2085 and to a PC. 5V + SINGLE-ENDED SAMPLE CLOCK INPUT DIFFERENTIAL OUTPUTS NOMINAL OUTPUTS LOOK LIKE 50 PER SIDE TO DRIVE AN EXTERNAL BALUN, OR COMBINER JUMPERS SHOWN IN THEIR DEFAULT POSITIONS THE DC2085 CONNECTS TO THE ALTERA STRATIX IV EVALUATION BOARD VIA HSMC CONNECTORS CONNECT USB TO PC RUNNING LTDACGen SOFTWARE Figure 1. DC2085 Setup (zoom for details) 2 dc2085afa DEMO MANUAL DC2085 Quick Start Procedure Hardware Setup SMAs J2 & J3: Differential Trigger Input. Apply a signal to J2 from a 50 driver. Absorptive filters are required for data sheet performance. Use J2 and J3 if the trigger is a differential signal. J4: Sample Clock Input. Apply a clock signal to this SMA connector from a 50 driver. A 0dBm clock source should be sufficient, but for best phase noise and jitter performance, use the highest possible amplitude and slew rate, up to 15dBm. J5 & J6:Differential Output Signals. These SMAs provide access to the differential outputs of the DAC. The output impedance is designed to be 50 at each SMA, or 100 differential. Connect an external balun or combiner to these pins to drive a single-ended spectrum analyzer. Linear Technology has various coupon boards for specific frequencies and applications. More information is available at www.linear.com. J8:SYNC. This SMA is to provide access to the sync pin of the LT8614. It is not used in normal use. Turrets +5V:Positive Input Voltage for the DAC and Digital Circuits. This voltage feeds a series of regulators that supply the proper voltages for the DAC. The voltage range for this turret is 4.8V to 5.2V. Note: For close-in phase noise plots, driving this voltage is not ideal. There is a known 20kHz noise hump in the spectrum that is generated by the regulators. For the best phase noise performance, back drive the onboard regulators with the provided turrets from a low noise supply. GND: Ground Connection. This demo board has only a single ground plane. This turret should be tied to the GND terminal of the power supply being used. SVDD3V0: Optional 3.0V Input. This pin is connected directly to the SVDD pin of the DAC. It requires a supply that can deliver up to 100mA. Driving this pin will shut down the onboard regulator. AVDD3V3: Optional 3.3V Input. This pin is connected directly to the AVDD3V3 pin of the DAC. It requires a supply that can deliver up to 200mA. Driving this pin will shut down the onboard regulator. DVDD3V3: Optional 3.3V Input. This pin is connected directly to the DVDD3V3 pin of the DAC. It requires a supply that can deliver up to 50mA. Driving this pin will shut down the onboard regulator. AVDD1V8: Optional 1.8V Input. This pin is connected directly to the AVDD1V8 pin of the DAC. It requires a supply that can deliver up to 1A. Driving this pin will shut down the onboard regulator. DVDD3V3: Optional 1.8V Input. This pin is connected directly to the DVDD1V8 pin of the DAC. It requires a supply that can deliver up to 500mA. Driving this pin will shut down the onboard regulator. VP1: This is a test point that is at the output of the onboard switching regulator. It is meant for test purposes. It can also be driven to 2.5V to shut down the output of the switching regulator. TSTP & TSTN: These pins are tied directly to the TSTP and TSTN pins of the DAC. They can be used to measure the internal temperature and timing of the LVDS inputs. FSADJ:This is an optional pin that is tied directly to the FSADJ pin of the DAC. It can be used to set the full-scale output current of the DAC. In normal operation this pin is tied to GND through 500 to set a current of 40mA at the output. REFIO: This pin is tied directly to the REFIO pin of the DAC and is used to set the reference voltage for the DAC. Normally it is internally set to 1.25V but can be overdriven with an external voltage from 1.1V to 1.4V. Jumpers The DC2085 demonstration circuit should have the following jumper settings as default positions. JP1: PD. In the RUN position this pin results in normal operation of the DAC. In the SHDN position the DAC is powered down. (Default:RUN or up) JP2:SPI and JTAG. This jumper selects how the FPGA is programmed. In the SPI position the FPGA is programmed from the onboard FTDI chip and the LTDACGen software. In dc2085afa 3 DEMO MANUAL DC2085 quick Start Procedure the JTAG position the J9 is used with a JTAG programmer to program the FPGA. (Default:SPI or down) Connectors J1: DC590. This is an optional header that can be used to program the DAC with the DC590. (Default:removed) J9:JTAG. This is an optional header that can be used to program the FPGA through a JTAG programmer. (Default: removed) J7:USB. Connect a USB cable from J7 to a computer with the LTDACGen software installed. J10 & J11: HSMC Connectors. These connectors are designed to connect to the Altera Stratix IV development board. All of the communication between the FPGA and the DAC is routed through these connectors. APPLYING POWER AND SIGNALS TO THE DC2085 DEMONSTRATION CIRCUIT If a Stratix IV demo board is used to supply data to the DC2085, the two boards should first be bolted together and a proper connection should be made. If Linear Technology provided the Stratix IV board the proper bit file is already installed in flash memory and will begin to operate when the board is powered on. If an unprogrammed FPGA board is used, refer to the appropriate documentation on how to program it. Power should be applied to the system in this order: 1. Connect the Altera board to the provided power supply. 2. Connect the USB cable to J7. 3. Apply a clock to J4. 4. Connect any optional output board to J5 and J6. 5. Turn on the voltage to the Altera board. 6. Connect the 5V from a bench supply to the +5V turret on the DC2085. 7. Open the LTDACGen software and hit connect. LTDACGen should report back that it is connected to the FPGA. See Figure 2: Figure 2. LTDACGen Connected to FPGA 4 dc2085afa DEMO MANUAL DC2085 Quick Start Procedure ANALOG OUTPUT NETWORK The analog output network of the DC2085 has been designed to maximize the performance of the LTC2000. The LTC2000 drives two 50 resistors on each side to minimize the impedance it sees. This maximizes the SFDR the DAC is able to produce. If a larger signal swing is required this impedance can be increased, but the SFDR might degrade. The output also has a pi network of 50 resistors to pad the output impedance of the board up to 50 per side. This allows the demo board to drive a 50 analyzer through a balun or other combiner. Linear Technology has various coupon boards for specific frequencies and applications. More information is available at www.linear.com. SAMPLE CLOCK The sample clock to the DC2085 demonstration circuit board is marked J4. As a default it is a single-ended 50 input port. There is an onboard balun that does a singleended to differential translation. For the best noise performance, the sample input must be driven with a very low jitter signal generator source. The amplitude should be as large as possible up to 1.8V or 9dBm. SOFTWARE The software for the DC2085, LTDACGen is available at www.linear.com free of charge. It simplifies the creation of complex waveforms and loading them into the FPGA to test the DC2085. For more information about how to use the LTDACGen software, refer to the help files that come with the software. RESULTS After everything is set up and the software is connected to the DAC demo system, a sine wave can be added to the output waveform. The default frequency is 399.932861328MHz (Figure 3). By clicking Update FPGA, the data is sent to the FPGA and is then used to program the DAC. A spectrum analyzer can then be used to view the results (Figure 4). Figure 3. Default Frequency dc2085afa 5 DEMO MANUAL DC2085 quick Start Procedure Figure 4. DC2085 Results. Close-In (Top) and Wideband (Bottom) 6 dc2085afa DEMO MANUAL DC2085 Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 13 C1, C25, C26, C29, C31, CAP., X7R, 0.1F, 16V 10% 0402 C32, C33, C34, C35, C36, C37, C71, C72 AVX, 0402YC104KAT2A 2 4 C2, C3, C8, C19 CAP., NPO, 0.01F, 25V 5% 0603 TDK, C1608C0G1H103J 3 9 C4, C6, C9, C11, C14, C18, C67, C68, C69 CAP., X7R, 1F, 16V 10% 0603 AVX, 0603YC105KAT2A 4 5 C5, C7, C10, C12, C15 CAP., TANT., 47F, 16V 10% 7343 AVX, TAJD476K016RNJ 5 4 C13, C16, C27, C28 CAP., X5R, 4.7F, 16V 20% 1206 TDK, C3216X5R1C475M 6 2 C17, C40 CAP., X5R, 10F, 10V 20% 0603 AVX, 0603ZD106MA2T 7 1 C20 CAP., C0G, 4.7pF, 50V 0.25pF 0603 AVX, 06035A4R7CAT2A 8 2 C21, C24 CAP., X7R, 0.1F, 16V 10% 0603 TDK, C1608X7R1C104K 9 1 C22 CAP., X7R, 1F, 25V 10% 0603 TDK, C1608X7R1E105K 10 2 C23, C70 CAP., X7R, 47F, 10V 10% 1210 MURATA, GRM32ER71A476KE15L 11 1 C30 CAP., X5R, 3.3F, 16V 10% 0603 TDK, C1608X5R1C335K 12 2 C38, C39 CAP., COG, 27pF, 50V 5% 0402 TDK, C1005C0G1H270J 13 2 C41, C42 CAP., COG, 100pF, 25V 5% 0201 TDK, C0603C0G1E101J 14 1 C43 CAP., X5R, 0.01F, 16V 10% 0402 MURATA, GRM155R61C103KA01D 15 1 C44 CAP., X7R, 47nF, 25V 10% 0402 MURATA, GRM155R71E473KA88D 16 9 C45, C48, C49, C53, C54, CAP., X5R, 100F, 6.3V 20% 1206 C58, C61, C62, C64 TDK, C3216X5R0J107M 17 10 C46, C50, C51, C52, C55, CAP., X7S, 2.2F, 4V 20% 0306 C56, C57, C59, C60, C63 MURATA, LLL185C70G225ME01L 18 1 C47 CAP., COG, 10pF, 25V 5% 0201 MURATA, GRM0335C1E100JA01D 19 0 C65 CAP., OPT, 0402 OPTION 20 1 C66 CAP., NP0, 1pF, 25V .25pF 0402 AVX, 04023A1R0CAT2A 21 2 C73, C74 CAP., X7R, 4.7F, 50V 10% 1206 MURATA, GRM31CR71H475KA12L 22 1 C75 CAP., X7R, 10F, 50V 10% 1210 MURATA, GRM32ER71H106KA12L 23 2 C76, C77 CAP., X5R, 1F, 50V 10% 0603 MURATA, GRM188R61H105KAALD 24 1 D1 DIODE, TVS, 70V,SMA DIODES INC./ ZETEX, SMAT70A-13-F 25 1 D2 DIODE, TVS, 24V,SMA DIODES INC./ ZETEX, SMAJ24A-13-F 26 1 D3 LED, RED, WATERCLEAR, 0805 WURTH, 150080RS75000 27 10 E1, E2, E3, E5-E11 TEST POINT, TURRET, .061, PBF MILL-MAX, 2308-2-00-80-00-00-07-0 28 2 E4, E12 TEST POINT, TURRET, .094, PBF MILL-MAX, 2501-2-00-80-00-00-07-0 29 2 JP1, JP2 HEADER, 3 PIN, .079 SULLINS, NRPN031PAEN-RC 30 1 J1 HEADER, 2x7 DUAL ROW MOLEX 87831-1420 31 3 J2, J3, J8 CON., SMA JACK, STRAIGHT, THRU-HOLE AMPHENOL CONNEX, 132134 32 1 J4 CON., SMA PCB TOP MOUNT AEP, 9650-1113-005 33 2 J5, J6 CON., SMA 50 EDGE-LAUNCH EMERSON, 142-0701-851 34 1 J7 CONNECTOR, USB TYPE B, RIGHT ANGLE PCB MOUNT FCI, 61729-0010BLF 35 1 J9 HEADER, 2X5, 0.100 SAMTEC, TSW-105-07-L-D 36 2 J10, J11 CONNECTOR, HSMC SAMTEC, ASP-122952-01 dc2085afa 7 DEMO MANUAL DC2085 Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 37 6 L1, L2, L3, L4, L6, L7 FERRITE BEAD, 33 AT 100mHz, 1206 MURATA, BLM31PG330SN1L 38 1 L5 INDUCTOR, 2.2H, 20% HIGH CURRENT, SMT VISHAY, IHLP2020BZER2R2M11 39 1 L8 INDUCTOR, CERAMIC CHIP, 1nH, 5%, 0402 COILCRAFT, 0402CS-1N0XJLU 40 1 L9 FERRITE BEAD, 30 AT 100mHz, 0805 TDK, MPZ2012S300A 41 1 L10 INDUCTOR, 6.8H, 20% HIGH CURRENT, SMT VISHAY, IHLP2020BZER6R8M11 42 2 MTG5, MTG6 STANDOFF, NYLON 0.5" KEYSTONE, 8833 (SNAP ON) 43 2 Q1, Q2 TRANSISTOR, N-CH. POWER MOSFET, SOIC 8L FAIRCHILD, FDS8870 44 6 R1, R2, R3, R13, R17, R30 RES., CHIP, 1k, 1/16W, 5% 0402 VISHAY, CRCW04021K00JNED 45 1 R4 RES., CHIP, 4.7k, 1/16W, 5% 0402 YAGEO, RC0402JR-074K7L 46 4 R5, R14-R16 RES., CHIP, 10k, 1/16W, 5% 0402 YAGEO, RC0402JR-0710KL 47 2 R6, R8 RES., CHIP, 2k, 1/16W, 5% 0402 VISHAY, CRCW04022K00JNED 48 0 R7, R10, R23, R24, R25, RES., CHIP, OPT, 0402 R27, R28, R36, R37, R38, R39, R43, R62, R63 OPTION 49 1 R9 RES., CHIP, 39, 1/16W, 1% 0402 VISHAY, CRCW040239R0FKED 50 1 R11 RES., CHIP, 0 JUMPER, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 51 1 R12 RES., CHIP, 12k, 1/16W, 5% 0402 VISHAY, CRCW040212K0JNED 52 1 R18 RES., CHIP, 2.2k, 1/16W, 5% 0402 VISHAY, CRCW04022K20JNED 53 2 R19, R20 RES., CHIP, 3.24k, 1/16W, 1% 0402 VISHAY, CRCW04023K24FKED 54 1 R21 RES., CHIP, 1k, 1/16W, 1% 0402 YAGEO, RC0402FR-071KL 55 1 R22 RES., CHIP, 7.15k, 1/16W, 1% 0402 VISHAY, CRCW04027K15FKED 56 2 R26, R29 RES., CHIP, 49.9, 1/6W, 1% 0201 VISHAY, CRCW020149R9FNED 57 7 R31-R35, R41, R42 RES., CHIP, 10, 1/16W, 1% 0402 VISHAY, CRCW040210R0FKED 58 10 R40, R44, R46, R47, R48, R57, R58, R59, R60, R61 RES., CHIP, 50, HIGH FREQ., 1/20W, 0.1% 0402 VISHAY, FC0402E50R0BST1 59 1 R45 RES., CHIP, 499, 1/16W, 1% 0402 VISHAY, CRCW0402499RFKED 60 1 R49 RES., CHIP, 41.2k, 1/10W, 1% 0603 VISHAY, CRCW060341K2FKEA 61 1 R50 RES., CHIP, 309k, 1/10W, 1% 0603 VISHAY, CRCW0603309KFKEA 62 1 R51 RES., CHIP, 243k, 1/10W, 1% 0603 VISHAY, CRCW0603243KFKEA 63 1 R52 RES., CHIP, 50, 1/8W, 5% 0603 VISHAY, FC0603E50R0JST1 64 1 R53 RES., CHIP, 560, 1/10W, 5% 0603 VISHAY, CRCW0603560RJNEA 65 1 R54 RES., CHIP, 10k, 1/10W, 1% 0603 VISHAY, CRCW060310K0FKEA 66 2 R55, R56 RES., CHIP, 20, 1/16W, 1% 0402 VISHAY, CRCW040220R0FKED 67 1 T1 TRANSFORMER, BALUN ANAREN, B0430J50100AHF 68 1 U2 IC, USB TO MULTIPURPOSE UART/FIFO, TQFP FTDI, FT2232HL 69 1 U3 IC, QUAD MUX/DEMUX, TSSOP-16 FAIRCHILD, FST3257MTCX 70 1 U4 IC, EEPROM 1kBIT 3MHZ, 8TSSOP MICROCHIP, 93LC46C-I/ST 71 1 U5 IC, MICROPOWER REGULATOR, SO-8 LINEAR TECHNOLOGY, LT1763CS8-3#PBF 72 2 U6, U7 IC, MICROPOWER REGULATOR, SO-8 LINEAR TECHNOLOGY, LT1763CS8-3.3#PBF 73 1 U8 IC, BUCK REGULATOR, QFN LINEAR TECHNOLOGY, LT8614IUDC#PBF 74 1 U9 IC, VOLTAGE REFERENCE, MSOP LINEAR TECHNOLOGY, LTC6655CHMS8-2.048#PBF 8 dc2085afa DEMO MANUAL DC2085 Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 75 2 U10, U11 I.C., LOW DROPOUT REGULATOR, 3x3mm, DFN LINEAR TECHNOLOGY, LT3080EDD#PBF 76 1 U12 I.C., 80V IDEAL DIODE, DFN-6L LINEAR TECHNOLOGY, LTC4359HDCB-#TRPBF 77 2 XJP1, XJP2 SHUNT, 2mm SAMTEC, 2SN-BK-G 78 1 Y1 CRYSTAL, 12.0 MHz, SMT ABRACON, ABMM2-12.000MHZ-E2-T GENERAL BOM DC2085A IC, 16-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-16 GENERAL BOM DC2085A IC, 14-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-14 GENERAL BOM DC2085A IC, 11-BIT 2.5Gsps DAC LINEAR TECHNOLOGY, LTC2000IY-11 GENERAL BOM DC2085A IC, 16-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-16 GENERAL BOM DC2085A IC, 14-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-14 GENERAL BOM DC2085A IC, 11-BIT 2.7Gsps DAC LINEAR TECHNOLOGY, LTC2000AIY-11 DC2085A-A Required Circuit Components 1 1 2 1 U1 DC2085A-B Required Circuit Components 1 1 2 1 U1 DC2085A-C Required Circuit Components 1 1 2 1 U1 DC2085A-D Required Circuit Components 1 1 2 1 U1 DC2085A-E Required Circuit Components 1 1 2 1 U1 DC2085A-F Required Circuit Components 1 1 2 1 U1 dc2085afa 9 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. A B C D GND GND GND GPIO EEVCC EESDA EESCL EEGND 1 1 CK J4 1 TRIG P J3 TRIG N J2 DCKIN DCKIP (FROM PAGE 4) DC590 J1 VCCIO CS SCK/SCL MOSI/SDA MISO 3 8 13 14 10 9 11 12 6 4 7 5 2 J10 J9 SVDD3V0 DCKIP DCKIN 5 DIGITAL INPUTS [DA0..DA15] AND [DB0..DB15] FROM PAGE 4 DAP1 L8 1nH C66 1pF NP0 1 TRIGGER_P TRIGGER_N 2 C65 OPT 0402 (T0 PAGE 4) C47 10pF 0201 COG DAP9 1 DAP10 VUNREG DAP0 DAN0 S7 S8 DAN0 DAP0 DBN0 DBP0 S9 S10 DAP2 DAN1 DAP1 R9 R10 DBN1 DBP1 DBN0 DBP0 DAN1 DAP3 DBN1 DBP1 DBP2 DBN2 Q9 Q10 DAN2 DAP2 R7 R8 DAN2 DAP4 DBN2 DBP2 DBP3 DBN3 P9 P10 DAN3 DAP3 Q7 Q8 DAN3 DAP5 DBN3 DBP3 DBP4 DBN4 N9 N10 DAN4 DAP4 P7 P8 DAN4 DAP6 DBN4 DBP4 DBP5 DBN5 M9 M10 DAN5 DAP5 N7 N8 DAN5 DAP7 DBN5 DBP5 DBP6 DBN6 L9 L10 DAN6 DAP6 M7 M8 DAN6 DAP8 DBN6 DBP6 L7 L8 DAN7 DAN7 DAP7 DBP7 DBN7 K9 K10 DBN7 DBP7 K7 K8 DAN8 H7 H8 DAN8 DAP8 DBN8 DBP8 H9 H10 DBN8 DBP8 DAN9 G7 G8 U1* DAN9 DAP9 T1 3 GND IN GND E11 4 5 6 4 C42 100pF 0201 COG 0.01uF 0402 X5R C43 C41 100pF 0201 COG TSTP TSTN E10 ANAREN XINGER 2 1 DBN9 DBP9 G9 G10 DAP11 DAN10 DAP10 F9 F10 DBN10 DBP10 DBN9 DBP9 DAN10 DAP12 DBN10 DBP10 F7 F8 DAN11 DAN11 DAP11 DBP11 DBN11 E9 E10 DBN11 DBP11 E7 E8 DAN12 DAP13 DAN13 DAN12 DAP12 DBN12 DBP12 DBN13 DBP13 D9 D10 DBN12 DBP12 D7 D8 DAP14 DAN13 DAP13 C9 C10 DBN13 DBP13 C7 C8 DAN14 DAP15 DAN15 DAN14 DAP14 B7 B8 DAN15 DAP15 A9 A10 DBN14 DBP14 A7 A8 4 R26 49.9 0201 1% R29 49.9 0201 1% R4 R3 DBN15 DBP15 B9 B10 DBN14 DBP14 DBN15 DBP15 S1 S2 S5 S4 S3 SVDD3V0 PD CS SCK SDI SD0 TSTP TSTN S6 SVDD CKP CKN 10 DCKOP DCKON IOUTN IOUTP FSADJ REFIO R45 499 E8 J8 J7 J1 H1 M2 M1 FSADJ E9 3 2 1 RUN DCKON DCKOP R48 50 0402 R47 50 0402 3 (T0 PAGE 4) R24 OPT 0402 R23 OPT 0402 PD_ALT SHDN (TO PAGE 4) C40 10uF R42 R41 REFIO 10 10 PD SVDD3V0 JP1 3 R25 OPT 0402 R43 OPT 0402 R28 OPT 0402 R60 50 0402 R58 50 0402 R57 50 0402 R27 OPT 0402 R59 50 0402 R44 50 0402 R62 OPT 0402 LTC2000AIY-11 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE LTC2000AIY-14 APPROVALS SCALE = NONE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. M. HAWKINS VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. C. MAYOTT CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. LTC2000AIY-16 -F LTC2000IY-11 -E LTC2000IY-14 -D -C -A -B U1 LTC2000IY-16 ASSY *ASSEMBLY TABLE 2. REFER TO PAGE 4 FOR LTC2000 POWER CONNECTIONS. 1. ALL RESISTORS ARE SIZE 0402, U.O.N. NOTES: R46 50 0402 R40 50 0402 R61 50 0402 R63 OPT 0402 2 Figure 5. DC2085 Demo Circuit Schematic (Sheet 1) A3 A2 5 DATE: N/A SIZE 10 1 10 1 1 IOUTNB IOUTPB TO PAGE 4 01/30/2014 1 SHEET DEMO CIRCUIT 2085A 1 3 OF 4 REV. LTC Confidential-For Customer Use Only LTC2000 HIGH SPEED DAC IC NO. LTC2000-X FAMILY DATE C. MAYOTT 01/30/2014 APPROVED 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com J5 J6 PD_ALT SDO_ALT SDO_FTDI SDI_ALT SDI_FTDI SCK_ALT SCK_FTDI CS_ALT CS_FTDI PRODUCTION DESCRIPTION REVISION HISTORY TECHNOLOGY Fax: (408)434-0507 R31 R37 OPT R33 10 R36 OPT R32 10 R38 OPT R34 R39 OPT R35 10 3 REV TITLE: SCHEMATIC - ECO A B C D DEMO MANUAL DC2085 Schematic Diagram dc2085afa A B C R18 2.2K RESET# CS CLK DATA 1 2 3 4 5 6 R14 10K SVDD3V0 USB J7 5 VBUS 4 3 2 1 DO DI CLK CS VSS ORG NC VCC C39 27pF NPO R15 10K 5 6 7 8 1 R12 12K C30 3.3uF 3 4 4 C38 27pF NPO R13 1K C29 0.1uF SVDD3V0 C26 0.1uF Y1 12.0 Mhz FTDI_1V8 SVDD3V0 93LC46C-I/ST U4 R16 10K SVDD3V0 USBDUSBD+ L6 C25 0.1uF FERRITE BEAD, 33 OHMS 2 D L7 FERRITE BEAD, 33 OHMS SVDD3V0 4 13 3 2 63 62 61 14 6 7 8 49 50 TEST OSCO OSCI EECS EECLK EEDATA RESET# REF DM DP VREGOUT VREGIN C28 4.7uF C27 4.7uF 4 9 FTDI_1V8 FT2232HL U2 RDN SPI JTAG JP2 3 2 1 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. R3 1K R5 10K 2 SCALE = NONE APP ENG. C. MAYOTT PCB DES. M. HAWKINS TDI TCK TDO TMS BD4 1 3 5 7 9 J9 DATE: N/A SIZE 9 7 SVDD3V0 1 CS_IF 12 SDO_IF SDI_IF SCK_IF 4 S 4A 3A 2A 1A CS_FTDI 15 SDO_FTDI SDI_FTDI SCK_FTDI 14 13 TMS TDO 11 10 TDI TCK 5 6 1 SHEET DEMO CIRCUIT 2085A 2 LTC2000 HIGH SPEED DAC IC NO. LTC2000-X FAMILY 01/30/2014 BD2 BD0 3 OF 4 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only OE 4B1 4B2 3B1 3B2 2B1 2B2 U3 BD3 BD1 OEN_CTRL FST3257MTCX 2 3 C1 0.1uF 1B1 1B2 1 C37 0.1uF R11 0 OHMS R10 OPT C36 0.1uF SVDD3V0 C35 0.1uF TECHNOLOGY 2 4 6 8 10 JTAG TITLE: SCHEMATIC BD5 R4 4.7K VBUS BD6 C34 0.1uF SVDD3V0 RXEN R7 OPT SIWUA_CTRL APPROVALS R17 1K R6 2K R8 2K C33 0.1uF 2 SVDD3V0 C32 0.1uF SYSCLK BC7 R2 1K SVDD3V0 R1 1K R9 39 FIFO_DATA_IN6 FIFO_DATA_IN4 FIFO_DATA_IN2 FIFO_DATA_IN0 PWRENN BC6 BC4 BC2 BC0 BD7 SUSPEND# BC5 BC3 BC1 AC7 WM TXEN FIFO_DATA_IN7 FIFO_DATA_IN5 FIFO_DATA_IN3 FIFO_DATA_IN1 CUSTOMER NOTICE 60 36 48 52 53 54 55 57 58 59 38 39 40 41 43 44 45 46 26 27 28 29 30 32 33 34 16 17 18 19 21 22 23 24 C31 0.1uF FTDI_1V8 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. PWREN# SUSPEND# BCBUS0 BCBUS1 BCBUS2 BCBUS3 BCBUS4 BCBUS5 BCBUS6 BCBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 ACBUS0 ACBUS1 ACBUS2 ACBUS3 ACBUS4 ACBUS5 ACBUS6 ACBUS7 ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 SVDD3V0 3 Figure 6. DC2085 Demo Circuit Schematic (Sheet 2) VPHY VPLL AGND 10 12 37 64 VCORE VCORE VCORE 20 31 42 56 VCCIO VCCIO VCCIO VCCIO GND GND GND GND GND GND GND GND 1 5 11 15 25 35 47 51 16 VCC GND 8 5 A B C D DEMO MANUAL DC2085 Schematic Diagram 11 dc2085afa A B C E12 D2 SMAJ24A D1 SMAT70A SYNC J8 +5V E4 1 +5V 5 C70 47uF 1210 5 SHDN 3 2 1 R30 1K 0402 C9 1.0uF C6 1.0uF C4 1.0uF 5 6 7 8 R53 560 R52 50 FERRITE BEAD, 33 OHMS L1 4 GND 1 2 2 1 4 IN 3 SOURCE LTC4359HDCB U12 C44 47nF 0402 25V Q1 FDS8870 U7 BYP SEN OUT 4 C75 10uF 1210 L10 C73 4.7uF 1206 BST GND2 GND2 2 1 R51 243K R50 309K C23 47uF 1210 PAD VOUT VOUT VOUT 2 SCALE = NONE APP ENG. C. MAYOTT PCB DES. M. HAWKINS APPROVALS U9 DATE: N/A SIZE R20 3.24K R19 3.24K 4 3 2 1 GND GND VIN SHDN E6 R22 7.15K R21 1K C15 47uF DVDD1V8 C12 47uF C17 10uF + E5 AVDD1V8 1 C19 0.01uF 1 SHEET DEMO CIRCUIT 2085A 3 LTC2000 HIGH SPEED DAC 3 OF 4 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C16 4.7uF LTC2000-X FAMILY 01/30/2014 IC NO. 5 6 7 8 + DVDD1V8 C13 4.7uF AVDD1V8 TECHNOLOGY GND OUTS OUTF GND LTC6655CHMS8-2.048 9 1 2 3 9 1 2 3 TITLE: SCHEMATIC C18 1.0uF L4 VCTRL VIN VIN U10 LT3080EDD PAD VOUT VOUT VOUT VP1 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 VCTRL VIN VIN LT3080EDD U11 FERRITE BEAD, 33 OHMS SVDD3V0 5 8 7 5 8 7 2 E7 CUSTOMER NOTICE 2.2V VP1 R54 10K C72 0.1uF R56 20 C14 1.0uF FERRITE BEAD, 33 OHMS C71 0.1uF R55 20 C11 1.0uF L3 +5V +5V Q2 FDS8870 4 L2 FERRITE BEAD, 33 OHMS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. C20 4.7pF L5 2.2uH C21 0.1uF 2 DVDD3V3 AVDD3V3 SVDD3V0 C77 1.0uF C69 1.0uF E3 C68 1.0uF E2 C67 1.0uF E1 3 Figure 7. DC2085 Demo Circuit Schematic (Sheet 3) C74 4.7uF 1206 20 1 9 8 22 21 3 11 10 13 C10 47uF VIN2 + C7 47uF C5 47uF SYNC/MODE SW SW TR/SS SW SW INTVCC BIAS RT FB PG GND1 GND1 VIN1 6.8uH 1 15 2 16 17 19 6 7 4 LT8614 C8 0.01uF U8 + DVDD3V3 C3 0.01uF AVDD3V3 + SVDD3V0 C2 0.01uF L9 4 2 1 4 2 1 4 2 1 FERRITE BEAD R49 41.2K C22 1.0uF C24 0.1uF C76 D3 RED 1.0uF BYP SEN OUT LT1763CS8-3.3 SHDN IN U6 BYP SEN OUT LT1763CS8-3.3 SHDN IN 4 LT1763CS8-3 SHDN IN POWER FAULT 5 8 5 8 5 8 U5 GND GND GND 3 6 7 GND GND GND 3 6 7 GND GND GND 3 6 7 D VSS 6 1 OUT 2 7 GATE PAD 2 1 14 EN/UV GND 18 5 6 7 8 3 2 1 SET 4 SET 12 4 5 A B C D DEMO MANUAL DC2085 Schematic Diagram dc2085afa A B C D 162 164 38 40 34 36 30 32 26 28 22 24 18 20 14 16 10 12 6 8 2 4 162 164 38 40 34 36 30 32 26 28 22 24 18 20 14 16 10 12 6 8 2 4 J11A ASP-122952-01 GND GND JTAG_TDO CLKOUT0 SDA JTAG_TCK XCVR_TXP0 XCVR_TXN0 XCVR_TXP1 XCVR_TXN1 XCVR_TXP2 XCVR_TXN2 XCVR_TXP3 XCVR_TXN3 XCVR_TXP4 XCVR_TXN4 XCVR_TXP5 XCVR_TXN5 XCVR_TXP6 XCVR_TXN6 GND GND JTAG_TDI CLKIN0 SCL JTAG_TMS 5 XCVR_RXPO XCVR_RXN0 XCVR_RXP1 XCVR_RXN1 XCVR_RXP2 XCVR_RXN2 XCVR_RXP3 XCVR_RXN3 XCVR_RXP4 XCVR_RXN4 XCVR_RXP5 XCVR_RXN5 XCVR_RXP6 XCVR_RXN6 GND GND JTAG_TDO CLKOUT0 SDA JTAG_TCK XCVR_TXP0 XCVR_TXN0 XCVR_TXP1 XCVR_TXN1 XCVR_TXP2 XCVR_TXN2 XCVR_TXP3 XCVR_TXN3 XCVR_TXP4 XCVR_TXN4 XCVR_TXP5 XCVR_TXN5 XCVR_TXP6 XCVR_TXN6 BANK 1 XCVR_RXP7 XCVR_TXP7 XCVR_RXN7 XCVR_TXN7 GND GND JTAG_TDI CLKIN0 SCL JTAG_TMS XCVR_RXPO XCVR_RXN0 XCVR_RXP1 XCVR_RXN1 XCVR_RXP2 XCVR_RXN2 XCVR_RXP3 XCVR_RXN3 XCVR_RXP4 XCVR_RXN4 XCVR_RXP5 XCVR_RXN5 XCVR_RXP6 XCVR_RXN6 BANK 1 XCVR_RXP7 XCVR_TXP7 XCVR_RXN7 XCVR_TXN7 ASP-122952-01 J10A GND GND GND GND GND FIFO_DATA_IN1 FIFO_DATA_IN5 FIFO_DATA_IN7 TXEN WM RXEN RDN SYSCLK 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 161 163 FIFO_DATA_IN0 CS_ALT AC7 SUSPEND# SIWUA_CTRL OEN_CTRL FIFO_DATA_IN6 FIFO_DATA_IN4 FIFO_DATA_IN3 FIFO_DATA_IN2 RESET# SDO_ALT 5 7 1 3 161 163 37 39 33 35 29 31 25 27 21 23 17 19 13 15 9 11 5 7 1 3 166 168 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 166 168 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 4 GND GND DBN0 CLK DCKOP CS DCKON 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144 146 148 150 152 154 156 158 160 170 172 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144 146 148 150 152 154 156 158 160 GND GND J11C GND GND BANK 3 LVDS_RXP8 LVDS_TXP8 LVDS_RXN8 LVDS_TXN8 12V 3V3 LVDS_RXP9 LVDS_TXP9 LVDS_RXN9 LVDS_TXN9 12V 3V3 LVDS_RXP10 LVDS_TXP10 LVDS_RXN10 LVDS_TXN10 12V 3V3 LVDS_RXP11 LVDS_TXP11 LVDS_RXN11 LVDS_TXN11 12V 3V3 LVDS_RXP12 LVDS_TXP12 LVDS_RXN12 LVDS_TXN12 12V 3V3 LVDS_RXP13 LVDS_TXP13 LVDS_RXN13 LVDS_TXN13 12V 3V3 LVDS_RXP14 LVDS_TXP14 LVDS_RXN14 LVDS_TXN14 12V 3V3 LVDS_RXP15 LVDS_TXP15 LVDS_RXN15 LVDS_TXN15 12V 3V3 LVDS_RXP16 LVDS_TXP16 LVDS_RXN16 LVDS_TXN16 12V 3V3 CLKIN2P CLKOUT2P CLKIN2N CLKOUT2N 12V 3V3 165 167 BC4 BC2 BC0 DAP1 DBP2 DAP2 DAP3 3 BD0 BD2 BD6 BC5 DBP1 DBP3 BC6 DAP0 TRIGGER_P TRIGGER_N DAN3 DBN3 DAN2 DBN2 DAN1 DBN1 DAN0 PWRENN DBP0 BD1 BD3 BD4 BD5 BD7 BC1 BC3 BC7 DATA 170 172 GND GND 169 171 DCKIN DAN7 DBN7 DAN6 DBN6 DAN5 DBN5 DAN4 DBN4 DAN15 DBN15 DAN14 DBN14 DAN13 DBN13 DAN12 DBN12 DAN11 DCKIP DAP7 DBP7 DAP6 DBP6 DAP5 DBP5 DAP4 DBP4 DAP15 DBP15 DAP14 DBP14 DAP13 DBP13 DAP12 DBP12 DAP11 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CUSTOMER NOTICE GND GND 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 169 171 101 103 105 107 109 111 113 115 117 119 121 123 125 127 129 131 133 135 137 139 141 143 145 147 149 151 153 155 157 159 2 Figure 8. DC2085 Demo Circuit Schematic (Sheet 4) GND GND D0 D2 3V3 LVDS_TXP0 LVDS_TXN0 3V3 LVDS_TXP1 LVDS_TXN1 3V3 LVDS_TXP2 LVDS_TXN2 3V3 LVDS_TXP3 LVDS_TXN3 3V3 LVDS_TXP4 LVDS_TXN4 3V3 LVDS_TXP5 LVDS_TXN5 3V3 LVDS_TXP6 LVDS_TXN6 3V3 LVDS_TXP7 LVDS_TXN7 3V3 CLKOUT1P CLKOUT1N 3V3 BANK 3 LVDS_RXP8 LVDS_TXP8 LVDS_RXN8 LVDS_TXN8 12V 3V3 LVDS_RXP9 LVDS_TXP9 LVDS_RXN9 LVDS_TXN9 12V 3V3 LVDS_RXP10 LVDS_TXP10 LVDS_RXN10 LVDS_TXN10 12V 3V3 LVDS_RXP11 LVDS_TXP11 LVDS_RXN11 LVDS_TXN11 12V 3V3 LVDS_RXP12 LVDS_TXP12 LVDS_RXN12 LVDS_TXN12 12V 3V3 LVDS_RXP13 LVDS_TXP13 LVDS_RXN13 LVDS_TXN13 12V 3V3 LVDS_RXP14 LVDS_TXP14 LVDS_RXN14 LVDS_TXN14 12V 3V3 LVDS_RXP15 LVDS_TXP15 LVDS_RXN15 LVDS_TXN15 12V 3V3 LVDS_RXP16 LVDS_TXP16 LVDS_RXN16 LVDS_TXN16 12V 3V3 CLKIN2P CLKOUT2P CLKIN2N CLKOUT2N 12V 3V3 PD_ALT DBP11 DAP10 DBP10 DAP9 DBP9 DAP8 DBP8 SDI_ALT ASP-122952-01 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 165 167 DBN11 DAN10 DBN10 DAN9 DBN9 DAN8 DBN8 SCK_ALT ASP-122952-01 J10C BANK 2 J11B GND GND 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 3 ASP-122952-01 D1 D3 12V LVDS_RXP0 LVDS_RXN0 12V LVDS_RXP1 LVDS_RXN1 12V LVDS_RXP2 LVDS_RXN2 12V LVDS_RXP3 LVDS_RXN3 12V LVDS_RXP4 LVDS_RXN4 12V LVDS_RXP5 LVDS_RXN5 12V LVDS_RXP6 LVDS_RXN6 12V LVDS_RXP7 LVDS_RXN7 12V CLKIN1P CLKIN1N 12V GND GND BANK 2 D1 D0 D3 D2 12V 3V3 LVDS_RXP0 LVDS_TXP0 LVDS_RXN0 LVDS_TXN0 12V 3V3 LVDS_RXP1 LVDS_TXP1 LVDS_RXN1 LVDS_TXN1 12V 3V3 LVDS_RXP2 LVDS_TXP2 LVDS_RXN2 LVDS_TXN2 12V 3V3 LVDS_RXP3 LVDS_TXP3 LVDS_RXN3 LVDS_TXN3 12V 3V3 LVDS_RXP4 LVDS_TXP4 LVDS_RXN4 LVDS_TXN4 12V 3V3 LVDS_RXP5 LVDS_TXP5 LVDS_RXN5 LVDS_TXN5 12V 3V3 LVDS_RXP6 LVDS_TXP6 LVDS_RXN6 LVDS_TXN6 12V 3V3 LVDS_RXP7 LVDS_TXP7 LVDS_RXN7 LVDS_TXN7 12V 3V3 CLKIN1P CLKOUT1P CLKIN1N CLKOUT1N 12V 3V3 J10B ASP-122952-01 HSMC CONNECTORS - MEZZANINE SIDE 4 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND DVDD33 DVDD33 DVDD33 DVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 SCALE = NONE APP ENG. C. MAYOTT AVDD3V3 AVDD33 AVDD1V8 AVDD18 U1 AVDD18 AVDD18 AVDD18 AVDD18 AVDD18 AVDD18 AVDD18 AVDD18 AVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 C59 2.2uF C55 2.2uF C50 2.2uF DATE: N/A SIZE C61 100uF 1 SHEET DEMO CIRCUIT 2085A LTC2000-X FAMILY C64 100uF DVDD3V3 C62 100uF 4 3 OF 4 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C63 2.2uF C45 100uF SVDD3V0 C46 2.2uF LTC2000 HIGH SPEED DAC TECHNOLOGY C58 100uF 01/30/2014 IC NO. C53 100uF AVDD3V3 C54 100uF DVDD1V8 C48 100uF AVDD1V8 C49 100uF C1 C2 C3 C4 D1 D2 D3 E1 E2 A5 B5 C5 D4 D5 E3 E4 E5 DVDD1V8 DVDD18 LTC2000 POWER BYPASS CAPACITORS LTC2000 POWER CONNECTIONS TITLE: SCHEMATIC C60 2.2uF C56 2.2uF C51 2.2uF PCB DES. M. HAWKINS APPROVALS C57 2.2uF C52 2.2uF M5 N5 P5 Q5 M4 N4 P1 P2 P3 P4 Q1 Q2 Q3 Q4 DVDD33 DVDD3V3 NET CONNECTIONS FOR LTC2000 POWER PINS TO PCB POWER NETS 1 R6 R5 R2 R1 Q6 P6 N6 N3 N2 N1 M6 M3 L6 L5 L4 L3 L2 L1 K6 K5 K4 K3 K2 K1 J6 J5 J4 J3 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND A1 A4 A6 B1 B2 B3 B4 B6 C6 D6 E6 F1 F2 F3 F4 F5 F6 G1 G2 G3 G4 G5 G6 H2 H3 H4 H5 H6 J2 5 A B C D DEMO MANUAL DC2085 Schematic Diagram 13 dc2085afa DEMO MANUAL DC2085 DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright (c) 2004, Linear Technology Corporation 14 Linear Technology Corporation dc2085afa LT 0615 REV A * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com LINEAR TECHNOLOGY CORPORATION 2014