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AD8187 데이터시트(PDF) 1 Page - Analog Devices |
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AD8187 데이터시트(HTML) 1 Page - Analog Devices |
1 / 20 page REV. A a AD8186/AD8187 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers 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 companies. 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 © 2003 Analog Devices, Inc. All rights reserved. FEATURES Fully Buffered Inputs and Outputs Fast Channel-to-Channel Switching: 4 ns Single-Supply Operation (5 V) High Speed: 480 MHz Bandwidth (–3 dB) 2 V p-p >1600 V/ s (G = +1) >1500 V/ s (G = +2) Fast Settling Time of 7 ns to 0.1% Low Current: 19 mA/20 mA Excellent Video Specifications (RL = 150 ) 0.05% Differential Gain Error 0.05 Differential Phase Error Low Glitch All Hostile Crosstalk –84 dB @ 5 MHz –52 dB @ 100 MHz High Off Isolation of –95 dB @ 5 MHz Low Cost Fast, High Impedance Disable Feature for Connecting Multiple Outputs Logic-Shifted Outputs APPLICATIONS Switching RGB in LCD and Plasma Displays RGB Video Switchers and Routers FUNCTIONAL BLOCK DIAGRAM IN0A DGND VREF OUT 0 OUT 1 OUT 2 IN1A IN2A IN2B IN1B IN0B VCC VEE VEE VEE VCC OE SEL A/ B VEE VCC VCC VCC VEE DVCC LOGIC 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 AD8186/AD8187 0 1 2 SELECT ENABLE Table I. Truth Table SEL A/ B OE OUT 00 High Z 10 High Z 11 IN A 01 IN B GENERAL DESCRIPTION The AD8186 (G = +1) and AD8187 (G = +2) are high speed, single-supply, triple 2-to-1 multiplexers. They offer –3 dB large signal bandwidth of over 480 MHz along with a slew rate in excess of 1500 V/ µs. With better than –80 dB of all hostile crosstalk and –95 dB OFF isolation, they are suited for many high speed appli- cations. The differential gain and differential phase error of 0.05% and 0.05 °, along with 0.1 dB flatness to 85 MHz, make the AD8186 and AD8187 ideal for professional and component video multiplexing. They offer 4 ns switching time, making them an excellent choice for switching video signals while consuming less than 20 mA on a single 5 V supply (100 mW). Both devices have a high speed disable feature that sets the outputs into a high impedance state. This allows the building of larger input arrays while minimizing OFF channel output loading. The devices are offered in a 24-lead TSSOP package. TIME (ns) 05 10 6.0 5.5 2.5 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 3.0 –0.5 –1.0 3.5 4.0 2.0 1.5 1.0 INPUT OUTPUT 15 20 5.0 25 Figure 1. AD8187 Video Amplitude Pulse Response, VOUT = 1.4 V p-p, RL = 150 Ω |
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