DEMO MANUAL DC2403A LT6200 Rail-to-Rail SAR ADC Driver Amplifier DESCRIPTION Demonstration circuit 2403A features the LT®6200 amplifier. The DC2403A includes two of these amplifiers and is designed to drive the inputs of the DC2290A demo board. The DC2290A features the LTC®2387 18-bit, 15Msps high speed SAR ADC. The linearity and low noise of the LT6200 make it an ideal candidate to drive the LTC2387 at frequencies up to 1MHz. See Table 1. Design files for this circuit board are available at http://www.linear.com/demo/DC2403A 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. –5V +10V FROM DIFFERENTIAL SOURCE TO DC2290A Figure 1. DC2403A Connection Diagram Table 1. DC2290A (LTC2387 Family) Driver Board INPUT FREQUENCY Up to 8kHz Up to 1MHz >1MHz DRIVE BOARD AMPLIFIER DC2402 LT6237 DC2403 LT6200 Contact Factory Contact Factory dc2403afa 1 DEMO MANUAL DC2403A QUICK START PROCEDURE Connect the DC2403A to a DC2290A using the two output SMA connectors J2, J4. Connect the +10V and –5V DC supplies to the turrets on the DC2403A. HARDWARE SETUP SIGNAL CONNECTIONS J1 +IN. This is the positive signal input. J3 –IN. This is the negative signal input. J4 –OUT. This is the negative signal output. J2 +OUT. This is the positive signal output. PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 1 6 C4, C6, C14, C16, C21, C23 CAP., TANT, 10µF, 16V, 20%, 0805 VISHAY, 298D106X0016R2T 2 2 C3, C5 CAP., X5R, 1µF, 16V, 10%, 0603 AVX, 0603YD105KAT2A 3 2 C1, C2 CAP., X5R, 22µF, 16V 10%, 1210 AVX, 1210YD226KAT2A 4 4 C7, C9, C20, C22 CAP., X5R, 0.1µF, 16V 10% 0402 AVX, 0402YD104KAT2A 5 1 C13 CAP., X7R, 0.01µF, 6.3V 10%, 0603 MURATA, GRM188R70J103KA01D 6 2 C8, C11 CAP., NPO, 1000pF, 16V, 5%, 1206 AVX, 1206YA102JAT2A 7 2 E4, E5 TEST POINT, TURRET, .064" MILL MAX, 2308-2-00-80-00-00-07-0 8 3 E1, E2, E3 TEST POINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0 9 2 J1, J3 CONN, SMA, 50Ω, EDGE-LAUNCH, FEMALE E.F. JOHNSON, 142-0701-851 10 2 J2, J4 CONN, SMA, 50Ω, EDGE-LAUNCH, MALE E.F. JOHNSON, 142-0801-811 11 2 R5, R9 RES., 24.9Ω, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF24R9V 12 2 R7, R11 RES., 15.0Ω, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF15R0V 13 1 R4 RES., 5.11kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF5111V 14 2 R1, R3 RES., 1.00kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF1001V 15 1 R2 RES., 1.05kΩ, 1/10W, 1% 0603 PANASONIC, ERJ-3EKF1051V 16 1 U2 IC, MICROPOWER REGULATOR, SO8 LINEAR TECH., LT1763CS8#PBF 17 2 U3, U4 IC, 400MHz AMPLIFIER, MS8 LINEAR TECH., LT6200CS8#PBF 18 1 U1 IC, MICROPOWER NEG. REGULATOR, SOT-23 LINEAR TECH., LT1964ES5-SD#PBF dc2403afa 2 DEMO MANUAL DC2403A SCHEMATIC DIAGRAM –5VIN IN C1 22µF C3 1µF OUT –2.5V LT1964-SD SHDN C4 10µF R2 1.05k ADJ GND R1 1k GND +10VIN IN C2 22µF C5 1µF OUT LT1763 SHDN GND +7.5V C6 10µF R4 5.11k ADJ BYP R3 1k C13 0.01µF +7.5V C9 0.1µF +IN LT6200 R5 25Ω C8 1nF R7 15Ω C16 10µF +OUT –2.5V C7 0.1µF C14 10µF +7.5V C22 0.1µF +IN LT6200 R9 25Ω C11 1nF R11 15Ω C23 10µF –OUT –2.5V C20 0.1µF C21 10µF dc2403afa 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. 3 DEMO MANUAL DC2403A 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 © 2004, Linear Technology Corporation dc2403afa 4 Linear Technology Corporation LT 1015 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 2015