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AD815 Fiches technique(PDF) 1 Page - Analog Devices |
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AD815 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 16 page FUNCTIONAL BLOCK DIAGRAM TOP VIEW (Not to Scale) AD815 13 16 15 14 24 23 22 21 20 19 18 17 12 11 10 9 8 1 2 3 4 7 6 5 NC = NO CONNECT NC NC NC NC NC NC NC NC +IN1 –IN1 –IN2 +IN2 OUT1 –VS OUT2 +VS *HEAT TABS ARE CONNECTED TO THE POSITIVE SUPPLY. THERMAL HEAT TABS +VS* THERMAL HEAT TABS +VS* REV. C a High Output Current Differential Driver AD815 GENERAL DESCRIPTION The AD815 consists of two high speed amplifiers capable of supplying a minimum of 500 mA. They are typically configured as a differential driver enabling an output signal of 40 V p-p on ±15 V supplies. This can be increased further with the use of a coupling transformer with a greater than 1:1 turns ratio. The low harmonic distortion of –66 dB @ 1 MHz into 200 Ω FEATURES Flexible Configuration Differential Input and Output Driver or Two Single-Ended Drivers Industrial Temperature Range High Output Power Thermally Enhanced SOIC 400 mA Minimum Output Drive/Amp, RL = 10 Low Distortion –66 dB @ 1 MHz THD, RL = 200 , VOUT = 40 V p-p 0.05% and 0.45 Differential Gain and Phase, RL = 25 (6 Back-Terminated Video Loads) High Speed 120 MHz Bandwidth (–3 dB) 900 V/ s Differential Slew Rate 70 ns Settling Time to 0.1% Thermal Shutdown APPLICATIONS ADSL, HDSL, and VDSL Line Interface Driver Coil or Transformer Driver CRT Convergence and Astigmatism Adjustment Video Distribution Amp Twisted Pair Cable Driver FREQUENCY – Hz –40 –50 –110 100 10M 1k 10k 100k 1M –60 –70 –80 –90 –100 VS = 15V G = +10 VOUT = 40V p-p RL = 50 (DIFFERENTIAL) RL = 200 (DIFFERENTIAL) Figure 1. Total Harmonic Distortion vs. Frequency AMP1 +15V –15V RL 120 110 499 VOUT = 40Vp-p VIN = 4Vp-p 1/2 AD815 1/2 AD815 G = +10 100 100 AMP2 VD = 40Vp-p 1:2 TRANSFORMER R1 = 15 R2 = 15 499 Figure 2. Subscriber Line Differential Driver combined with the wide bandwidth and high current drive make the differential driver ideal for communication applications such as subscriber line interfaces for ADSL, HDSL and VDSL. The AD815 differential slew rate of 900 V/ µs and high load drive are suitable for fast dynamic control of coils or transformers, and the video performance of 0.05% and 0.45 ° differential gain and phase into a load of 25 Ω enable up to 12 back-terminated loads to be driven. The 24-lead SOIC (RB) is capable of driving 26 dBm for full rate ADSL with proper heat sinking. 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. 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: 781/461-3113 © 2005 Analog Devices, Inc. All rights reserved. |
Numéro de pièce similaire - AD815_15 |
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Description similaire - AD815_15 |
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