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| EL6262C - Product Brief EL6262C - Product Brief Quad 20MHz & Quad, 70MHz, Switched Gain Pre-Amp Features * Autozero of output offset to <10mV * 3 selectable gains; 8K, 15K, 40K * Space saving QSOP-24 package * Differential Sum & Sum-Bar outputs * Single 5V supply General Description The EL6262C consists of 4 20MHz trans-impedance amplifiers and 4 70MHz trans-impedance amplifiers. The four 70MHz amplifier outputs also are averaged to provide differential 70MHz outputs. The EL6262C is designed to amplify the photo diode currents for CD, DVD, or other photo diode pick-up applications. Two TTL/CMOS compatible inputs select the gain for all eight amplifiers. The gain settings are 8K, 15K, and 40K for all channels. The sum and sumbar outputs are 11K, 20K, and 45K single ended. Gain matching is typically 3%, channel to channel. An autozero input brought high after power up reduces the output offsets to less than 10mV. The E, F, G, and H channel bandwidths are 20MHz for all gains and reasonable input and output loads. The A, B, C, D, S, and S channels have bandwidths of 70MHz, 46MHz, and 32MHz at low, middle, and high gains respectively after driving 25cm of flex circuit. Each amplifier output can typically sink or source up to 5mA and their outputs can swing 1VP-P at full bandwidth. Outline # MDP0040 Applications * * * * * * DVD RAM, RW, and ROM CD RW, R and ROM MO drives Optical Pickup pre-amplifier Servo positioning systems High speed instrumentation Ordering Information Part No EL6262CU Temp. Range 0C to +70C Package 24-Lead QSOP The EL6262C operates from a single +5V supply and is available in QSOP-24 package. It is specified for operation from -0C to 70C. Connection Diagram GAIN 0 SELECT 1 GAIN 1 SELECT 2 REF INPUT 3 A INPUT 4 B INPUT 5 C INPUT 6 D INPUT 7 0V (VSS) 8 E INPUT 9 F INPUT 10 G INPUT 11 H INPUT 12 24 AZ INPUT 23 SUM OUTPUT 22 SUM OUTPUT 21 A OUTPUT 20 B OUTPUT 19 C OUTPUT 18 D OUTPUT 17 +5V (VDD) 16 E OUTPUT 15 F OUTPUT 14 G OUTPUT 13 H OUTPUT June 8, 2000 Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a "controlled document". Current revisions, if any, to these specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation. (c) 2001 Elantec Semiconductor, Inc. EL6262C - Product Brief EL6262C - Product Brief Quad 20MHz & Quad, 70MHz, Switched Gain Pre-Amp General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. WARNING - Life Support Policy Elantec, Inc. products are not authorized for and should not be used within Life Support Systems without the specific written consent of Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used in accordance with instructions provided can be reasonably expected to result in significant personal injury or death. Users contemplating application of Elantec, Inc. Products in Life Support Systems are requested to contact Elantec, Inc. factory headquarters to establish suitable terms & conditions for these applications. Elantec, Inc.'s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages. Printed in U.S.A. Elantec Semiconductor, Inc. June 8, 2000 675 Trade Zone Blvd. Milpitas, CA 95035 Telephone: (408) 945-1323 (888) ELANTEC Fax: (408) 945-9305 European Office: +44-118-977-6020 Japan Technical Center: +81-45-682-5820 2 |
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