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AD9631AR-REEL7 Datasheet(PDF) 1 Page - Analog Devices |
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AD9631AR-REEL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page AD9631/AD9632 Ultralow Distortion, Wide Bandwidth Voltage Feedback Op Amps a REV. C 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 Wide Bandwidth AD9631, G = +1 AD9632, G = +2 Small Signal 320 MHz 250 MHz Large Signal (4 V p-p) 175 MHz 180 MHz Ultralow Distortion (SFDR), Low Noise –113 dBc Typ @ 1 MHz –95 dBc Typ @ 5 MHz –72 dBc Typ @ 20 MHz 46 dBm Third Order Intercept @ 25 MHz 7.0 nV/ ÷Hz Spectral Noise Density High Speed Slew Rate 1300 V/ s Settling 16 ns to 0.01%, 2 V Step 3 V to 5 V Supply Operation 17 mA Supply Current APPLICATIONS ADC Input Driver Differential Amplifiers IF/RF Amplifiers Pulse Amplifiers Professional Video DAC Current to Voltage Baseband and Video Communications Pin Diode Receivers Active Filters/Integrators/Log Amps PIN CONFIGURATION 8-Lead PDIP (N) and SOIC (R) Packages 1 2 3 4 NC –INPUT +INPUT –VS TOP VIEW 8 7 6 5 NC +VS OUTPUT NC AD9631/ AD9632 NC = NO CONNECT A proprietary design architecture has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. The AD9631 and AD9632 exhibit exceptionally fast and accurate pulse response (16 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and ultralow distortion. The AD9631 achieves –72 dBc at 20 MHz, and 320 MHz small signal and 175 MHz large signal bandwidths. These characteristics position the AD9631/AD9632 ideally for driving flash as well as high resolution ADCs. Additionally, the balanced high impedance inputs of the voltage feedback archi- tecture allow maximum flexibility when designing active filters. The AD9631/AD9632 are offered in the industrial (–40 C to +85 C) temperature range. They are available in PDIP and SOIC. FREQUENCY – Hz –30 10k 100k 1M 10M 100M –50 –70 –90 –110 –130 SECOND HARMONIC THIRD HARMONIC VS = 5V RL = 500 VO = 2V p-p Figure 1. AD9631 Harmonic Distortion vs. Frequency, G = +1 GENERAL DESCRIPTION The AD9631 and AD9632 are very high speed and wide band- width amplifiers. They are an improved performance alternative to the AD9621 and AD9622. The AD9631 is unity gain stable. The AD9632 is stable at gains of 2 or greater. Using a voltage feedback architecture, the AD9631/AD9632’s exceptional settling time, bandwidth, and low distortion meet the requirements of many applications that previously depended on current feedback amplifiers. Its classical op amp structure works much more predictably in many designs. |
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