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AD8189 Datenblatt(PDF) 1 Page - Analog Devices |
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AD8189 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 24 page 350 MHz Single-Supply (5 V) Triple 2:1 Multiplexers AD8188/AD8189 FEATURES Fully buffered inputs and outputs Fast channel-to-channel switching: 4 ns Single-supply operation (5 V) High speed 350 MHz bandwidth (−3 dB) @ 200 mV p-p 300 MHz bandwidth (−3 dB) @ 2 V p-p Slew rate: 1000 V/μs Fast settling time: 7 ns to 0.1% Low current: 19 mA/20 mA Excellent video specifications: load resistor (RL) = 150 Ω Differential gain error: 0.05% Differential phase error: 0.05° Low glitch All hostile crosstalk −84 dB @ 5 MHz −52 dB @ 100 MHz High off isolation: −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 24 23 22 21 20 19 18 17 16 15 14 13 VCC VCC DVCC VEE OUT2 VCC OUT1 VEE OUT0 VCC SEL A/B OE 1 2 3 4 5 6 7 8 9 10 11 12 IN0A IN0B VEE IN1B VEE IN2B VEE VCC IN2A VREF IN1A DGND 0 1 2 AD8188/AD8189 ENABLE SELECT LOGIC Figure 1. GENERAL DESCRIPTION The AD8188 (G = 1) and AD8189 (G = 2) are high speed, single-supply, triple 2-to-1 multiplexers. They offer −3 dB small signal bandwidth of 350 MHz and −3 dB large signal bandwidth of 300 MHz, along with a slew rate in excess of 1000 V/μs. With −84 dB of all hostile crosstalk and −95 dB off isolation, the parts are well suited for many high speed applications. The differential gain and differential phase error of 0.05% and 0.05° respectively, along with 0.1 dB flatness to 70 MHz, make the AD8188 and AD8189 ideal for professional and component video multiplexing. The parts 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. 4.0 –1.0 6.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 5 10 15 20 25 TIME (ns) INPUT OUTPUT Figure 2. AD8189 Video Amplitude Pulse Response, VOUT = 1.4 V p-p, RL = 150 Ω Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. 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 ©2006 Analog Devices, Inc. All rights reserved. |
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