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AD8133ACP-REEL Fiches technique(PDF) 1 Page - Analog Devices |
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AD8133ACP-REEL Fiches technique(HTML) 1 Page - Analog Devices |
1 / 16 page Triple Differential Driver With Output Pull-Down AD8133 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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES Triple high speed fully differential driver 225 MHz −3 dB large signal bandwidth Easily drives 1.4 V p-p video signal into source-terminated 100 Ω UTP cable 1600 V/µs slew rate Fixed internal gain of 2 Internal common-mode feedback network Output balance error −60 dB @ 50 MHz Differential input and output Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Output pull-down feature for line isolation Low distortion: 64 dB SFDR @ 10 MHz on 5 V supply, RL, dm = 200 Ω Low offset: 4 mV typical output referred on 5 V supply Low power: 26 mA @ 5 V for three drivers Wide supply voltage range: +5 V to ±5 V Available in space-saving packaging: 4 mm × 4 mm LFCSP APPLICATIONS KVM (keyboard-video-mouse) networking UTP (unshielded twisted pair) driving Differential signal multiplexing GENERAL DESCRIPTION The AD8133 is a major advancement beyond using discrete op amps for driving differential RGB signals over twisted pair cable. The AD8133 is a triple, low cost differential or single- ended input to differential output driver, and each amplifier has a fixed gain of 2 to compensate for the attenuation of line ter- mination resistors. The AD8133 is specifically designed for RGB signals but can be used for any type of analog signals or high speed data transmission. The AD8133 is capable of driving either Cate- gory 5 unshielded twisted pair (UTP) cable or differential printed circuit board transmission lines with minimal signal degradation. The outputs of the AD8133 can be set to a low voltage state to be used with series diodes for line isolation, allowing easy dif- ferential multiplexing over the same twisted pair cable. The AD8133 driver can be used in conjunction with the AD8129 and AD8130 differential receivers. FUNCTIONAL BLOCK DIAGRAM AD8133 OPD 1 VS– 2 –IN A 3 +IN A 4 VS– 5 VOCMC VS+ –IN C +IN C VS– 18 17 16 15 14 –OUT A 6 –OUT C 13 24 23 22 21 20 19 7 8 9 10 11 12 A B C Figure 1. FREQUENCY (MHz) 0 –20 –10 –40 –30 –60 –50 –80 –70 –100 –90 1 10 100 500 VS = +5V VS = ±5V ∆V OUT, dm = 2V p-p ∆V OUT, cm/∆VOUT, dm Figure 2. Output Balance vs. Frequency Manufactured on Analog Devices’ next generation XFCB bipo- lar process, the AD8133 has a large signal bandwidth of 225 MHz and a slew rate of 1600 V/µs. The AD8133 has an internal common-mode feedback feature that provides output amplitude and phase matching that is balanced to −60 dB at 50 MHz, suppressing harmonics and minimizing radiated elec- tromagnetic interference (EMI). The output common-mode level is easily adjustable by applying a voltage to the VOCM input pin. The VOCM input can also be used to transmit signals on the output common-mode voltages. The AD8133 is available in a 24-lead LFCSP package and can operate over the temperature range of −40°C to +85°C. |
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