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AD8048 Datasheet(PDF) 1 Page - Analog Devices |
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AD8048 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page REV. 0 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a 250 MHz, General Purpose Voltage Feedback Op Amps AD8047/AD8048 The AD8047 and AD8048’s low distortion and cap load drive make the AD8047/AD8048 ideal for buffering high speed ADCs. They are suitable for 12 bit/10 MSPS or 8 bit/60 MSPS ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters. The AD8047 and AD8048 are offered in industrial (–40 °C to +85 °C) temperature ranges and are available in 8-pin plastic DIP and SOIC packages. 5ns 1V Figure 1. AD8047 Large Signal Transient Response, VO = 4 V p-p, G = +1 FEATURES Wide Bandwidth AD8047, G = +1 AD8048, G = +2 Small Signal 250 MHz 260 MHz Large Signal (2 V p-p) 130 MHz 160 MHz 5.8 mA Typical Supply Current Low Distortion, (SFDR) Low Noise –66 dBc typ @ 5 MHz –54 dBc typ @ 20 MHz 5.2 nV/ √Hz (AD8047), 3.8 nV/√Hz (AD8048) Noise Drives 50 pF Capacitive Load High Speed Slew Rate 750 V/ µs (AD8047), 1000 V/µs (AD8048) Settling 30 ns to 0.01%, 2 V Step ±3 V to ±6 V Supply Operation APPLICATIONS Low Power ADC Input Driver Differential Amplifiers IF/RF Amplifiers Pulse Amplifiers Professional Video DAC Current to Voltage Conversion Baseband and Video Communications Pin Diode Receivers Active Filters/Integrators PRODUCT DESCRIPTION The AD8047 and AD8048 are very high speed and wide band- width amplifiers. The AD8047 is unity gain stable. The AD8048 is stable at gains of two or greater. The AD8047 and AD8048, which utilize a voltage feedback architecture, meet the requirements of many applications that previously depended on current feedback amplifiers. A proprietary circuit has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. For the power (6.6 mA max) the AD8047 and AD8048 exhibit fast and accurate pulse response (30 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and low distortion. The AD8047 achieves –54 dBc distortion at 20 MHz and 250 MHz small sig- nal and 130 MHz large signal bandwidths. FUNCTIONAL BLOCK DIAGRAM 8-Pin Plastic Mini-DIP (N), Cerdip (Q) and SO (R) Packages 1 2 3 4 8 7 6 5 AD8047/48 NC –INPUT +INPUT –V S NC +V S OUTPUT NC (Top View) NC = NO CONNECT © Analog Devices, Inc., 1995 One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 |
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