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ADA4891-1ARZ-R7 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADA4891-1ARZ-R7 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 20 page Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers ADA4891-1/ADA4891-2 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, 62-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 All rights reserved. P.O. Box 9106, Norwood, MA 020 ©2010 Analog Devices, Inc. FEATURES Low cost High speed and fast settling −3 dB bandwidth: 240 MHz (G = +1) Slew rate: 170 V/μs Settling time to 0.1%: 28 ns Video specifications (G = +2, RL = 150 Ω) 0.1 dB gain flatness: 25 MHz Differential gain error: 0.05% Differential phase error: 0.25° Single-supply operation Wide supply range: 2.7 V to 5.5 V Output swings to within 50 mV of supply rails Low distortion: 79 dBc SFDR @ 1 MHz Linear output current: 150 mA @ −50 dBc Low power of 4.4 mA per amplifier APPLICATIONS Imaging Consumer video Active filters Coaxial cable drivers Clock buffers Photodiode preamp Contact image sensor and buffers CONNECTION DIAGRAMS A NC 1 –IN 2 +IN 3 –VS 4 NC 8 +VS 7 VOUT 6 NC 5 DA4891-1 NC = NO CONNECT Figure 1. 8-Lead SOIC (R-8) VOUT 1 +IN 3 –VS 2 +VS 5 ADA4891-1 –IN 4 Figure 2. 5-Lead SOT-23 (RJ-5) ADA4891-2 OUT1 1 –IN1 2 +IN1 3 –VS 4 +VS 8 OUT 7 –IN2 6 +IN2 5 NC = NO CONNECT Figure 3. 8-Lead SOIC (R-8) and 8-Lead MSOP (RM-8) GENERAL DESCRIPTION The ADA4891-1 (single) and ADA4891-2 (dual) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail. In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range. The ADA4891 family of amplifiers are ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications. The ADA4891-1/ADA4891-2 are available in a wide variety of packages. The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages. The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages. The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C. –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 0.1 1k 1 10 100 FREQUENCY (MHz) G = +1 RF = 0Ω G = +2 RF = 604Ω G = +5 RF = 604Ω VS = +5V RL = 150Ω VOUT = 2V p-p Figure 4. Large Signal Frequency Response vs. Gain, VS = 5 V |
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