DEMO MANUAL DC1593A LTC2635: Quad12-Bit I2C VOUT DAC with Internal Reference DESCRIPTION Demonstration circuit DC1593A features the LTC2635 Quad 12-bit DAC. This device has an integrated, high accuracy, low-drift reference. It has a rail-to-rail output buffer and is guaranteed monotonic. This DAC communicates through a simple I2C compatible interface. Design files for this circuit board are available. Call the LTC factory. 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. ANALOG OUTPUTS TO DC590 DEMOBOARD TYPE LTC2635 VARIATION POWER-UP FULL SCALE (INT. REFERENCE MODE) A LMI Mid-Scale 2.5V B LMO High Impedance 2.5V C LZ Zero 2.5V D HMI Mid-Scale 4.096V E HZ Zero 4.096V dc1593af 1 DEMO MANUAL DC1593A QUICK START PROCEDURE Connect DC1593A to a DC590 USB serial controller using the supplied 14 conductor ribbon cable. Connect DC590 to a host PC with a standard USB A/B cable. Run the evaluation software supplied with DC590 or download it from www.linear.com. The correct control panel will be loaded automatically. Additional software documentation is available from the Help menu item, as features may be added periodically. dc1593af 2 DEMO MANUAL DC1593A QUICK START PROCEDURE HARDWARE SET-UP Analog Connections DAC outputs - The four DAC outputs from the LTC2635 are brought out to turrets labeled VOUTA through VOUTD. These may be connected to external instruments or other circuitry. NOTE: DAC outputs are not in alphabetical order on the circuit board. VREF - The Ref turret is connected directly to the reference terminals of the LTC2635. When the integrated reference is being used, the reference voltage may be monitored at this point. An external reference may also be applied to this turret after changing the setting in the QuikEval software, to external. Grounding and Power Connections Power (VCC) - Normally DC1593A is powered by the DC590 controller. VCC can be supplied to this turret, however the power supply on DC590 must be disabled! Refer to DC590 Quick Start Guide for more details on this mode of operation. Grounding - Ground turrets as well as two grounding strips are provided. dc1593af 3 DEMO MANUAL DC1593A PARTS LIST DC1593A ITEM QUANTITY REFERENCE-DESCRIPTION DESCRIPTION MANUFACTURER'S PART NUMBER REQUIRED CIRCUIT COMPONENTS: 1 3 C1, C2, C4 CAP., CHIP X7R 0.1F 16V AVX, 0603YC104MAT1A 0603 2 1 C3 CAP., CHIP X5R 10F 6.3V TDK., C2012X5R0J106M 3 11 E1 TO E11 TURRET, TESTPOINT 0.064" MILL-MAX, 2308-2 4 4 JP1 TO JP4 HEADER, 3Pin 1 Row 0.079CC SAMTEC, TMM-103-02-L-S 5 4 FOR (JP1 TO JP4) SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G 6 1 J1 HEADER, VERTICAL DUAL 2X7 0.079CC MOLEX, 87831-1420 7 2 R4, R5 RES., CHIP 4.99K 1% VISHAY, CRCW06034K99FNEA 8 3 R1, R2, R3 RES., CHIP 10K 5% VISHAY, CRCW060310K0JNEA 9 1 U2 I.C., SERIAL EEPROM, TSSOP-8 MICROCHIP, 24LC025-I/ST 10 1 (FOR INVENTORY ONLY) CABLE ASSY., 8" STRIP LINEAR RIBBON CABLE CA-2440 11 1 STENCIL STENCIL 1593A DESCRIPTION MANUFACTURER'S PART NUMBER DC1593A-A ITEM QUANTITY REFERENCE-DESCRIPTION 1 1 DC1563A GENERAL BOM 9 1 U1 I.C., QUAD 16-BIT, I2C DAC LINEAR TECH., LTC2635CUD-LMI12 12 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1593A DESCRIPTION MANUFACTURER'S PART NUMBER DC1593A-B ITEM QUANTITY REFERENCE-DESCRIPTION 1 1 DC1563A 2 1 U1 3 1 GENERAL BOM I.C., QUAD 16-BIT, I2C DAC LINEAR TECH., LTC2635CUD-LMO12 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1593A DESCRIPTION MANUFACTURER'S PART NUMBER DC1593A-C ITEM QUANTITY REFERENCE-DESCRIPTION 1 1 DC1563A GENERAL BOM 2 1 U1 I.C., QUAD 16-BIT, I2C DAC LINEAR TECH., LTC2635CUD-LZ12 3 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1593A DESCRIPTION MANUFACTURER'S PART NUMBER DC1593A-D ITEM QUANTITY REFERENCE-DESCRIPTION 1 1 DC1563A GENERAL BOM 2 1 U1 I.C., QUAD 16-BIT, I2C DAC LINEAR TECH., LTC2635CUD-HMI12 3 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1593A DESCRIPTION MANUFACTURER'S PART NUMBER DC1593A-E ITEM QUANTITY REFERENCE-DESCRIPTION 1 1 DC1563A GENERAL BOM 2 1 U1 I.C., QUAD 16-BIT, I2C DAC LINEAR TECH., LTC2635CUD-HZ12 3 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1593A dc1593af 4 NC EEGND EESCL EESDA EEVCC MISO SDA/MOSI SCK/SCL CS 5V VUNREG J1 HD2X7 WP 5 6 7 8 SDA SCL WP VCC A2 A1 A0 +5V VSS U2 24LC025 4 3 2 1 JP1 CA0 R2 10K +5V R3 10K 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. LTC2635CUD-HMI12 LTC2635CUD-HZ12 DC1593A-D DC1593A-E 2 LTC2635CUD-LZ12 LTC2635CUD-LMO12 DC1593A-C LTC2635CUD-LMI12 DC1593A-B 3 4 7+,6&,5&8,7,635235,(7$5<72/,1($57(&+12/2*<$1' 6833/,(')2586(:,7+/,1($57(&+12/2*<3$576 1 DC1593A-A +5V 3 7 9 4 8 5 LDAC CA2 CA1 CA0 SDA SCL C1 0.1uF 0 JP3 CA2 += /(2& 5 6&$/( 121( $33(1* 3&%'(6 $33529$/6 JP2 CA1 5 +5V 6 '$7( 1$ 6,=( '(6&5,37,21 E7 E8 11 12 REFLO LDAC GND VOUTD VOUTC VOUTB VOUTA GND REF '$7( 7/20/10 7 8 6+((7 1 LTC2635CUD DEMO CIRCUIT 1593A 2) 1 5(9 0F&DUWK\%OYG 0LOSLWDV&$ 3KRQH ZZZOLQHDUFRP )D[ /7&&RQILGHQWLDO)RU&XVWRPHU8VH2QO\ E11 E10 E9 E6 2 E4 E1 LEO C. E5 TECHNOLOGY 8 $33529(' 1 PRODUCTION Tuesday, July 20, 2010 ,&12 6 7 5(9,6,21+,6725< QUAD, 12-BIT, I2C DAC WITH 10PPM/DEGREE CELCIUS REFERENCE 7,7/( 6&+(0$7,& JP4 REFLO U1* VOUTD VOUTC VOUTB VOUTA C2 0.1uF 1 5(9 Exposed Pad Solder Side C3 10uF 6.3V BB (&2 GND 1 VSS R6 4.99K R1 10K 1 &86720(5127,&( R5 4.99K VCC 0 /,1($57(&+12/2*<+$60$'($%(67())25772'(6,*1$ &,5&8,77+$70((76&86720(56833/,('63(&,),&$7,216 +2:(9(5,75(0$,167+(&86720(5 65(63216,%,/,7<72 9(5,)<3523(5$1'5(/,$%/(23(5$7,21,17+($&78$/ $33/,&$7,21&20321(1768%67,787,21$1'35,17(' &,5&8,7%2$5'/$<2870$<6,*1,),&$17/<$))(&7&,5&8,7 3(5)250$1&(255(/,$%,/,7<&217$&7/,1($5 7(&+12/2*<$33/,&$7,216(1*,1((5,1*)25$66,67$1&( U1 R4 4.99K E3 +5V 1 * C4 0.1uF SDA SCL +5V GND 0 ASSY 14 12 11 9 10 5 7 4 6 2 1 E2 4 EXT. D C B A 2. INSTALL SHUNTS AS SHOWN ALL CAPACITORS ARE IN MICROFARADS 0603 1. ALL RESISTORS ARE IN OHMS 0603 GND 3 GND 8 GND 13 3 1 2 3 16 2 1 2 3 10 REF 1 1 2 3 GND 17 VCC GND 14 REFLO 13 1 2 3 NC 6 NC 15 NOTE: UNLESS OTHERWISE SPECIFIED D C B A DEMO MANUAL DC1593A SCHEMATIC DIAGRAM dc1593af 5 DEMO MANUAL DC1593A 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 dc1593af 6 Linear Technology Corporation LT 0810 * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2010