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AD8137YCPZ-REEL Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD8137YCPZ-REEL Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 24 page Low Cost, Low Power 12-Bit Differential ADC Driver AD8137 Rev. B 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. Specifications subject to change without notice. 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 owners. 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 © 2005 Analog Devices, Inc. All rights reserved. FEATURES Fully differential Extremely low power with power-down feature 2.6 mA quiescent supply current @ 5 V 450 µA in power-down mode @ 5 V High speed 110 MHz large signal 3 dB bandwidth @ G = 1 450 V/µs slew rate 12-bit SFDR performance @ 500 kHz Fast settling time: 100 ns to 0.02% Low input offset voltage: ±2.6 mV max Low input offset current: 0.45 µA max Differential input and output Differential-to-differential or single-ended-to-differential operation Rail-to-rail output Adjustable output common-mode voltage Externally adjustable gain Wide supply voltage range: 2.7 V to 12 V Available in small SOIC package APPLICATIONS 12-bit ADC drivers Portable instrumentation Battery-powered applications Single-ended-to-differential converters Differential active filters Video amplifiers Level shifters FUNCTIONAL BLOCK DIAGRAM –IN 1 VOCM 2 VS+ 3 +OUT 4 +IN 8 PD 7 VS– 6 –OUT 5 AD8137 Figure 1. RG = 1kΩ VO, dm = 0.1V p-p FREQUENCY (MHz) 3 2 1 0 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0.1 1 10 100 1000 G = 5 G = 10 G = 1 G = 2 Figure 2. Small Signal Response for Various Gains GENERAL DESCRIPTON The AD8137 is a low cost differential driver with a rail-to-rail output that is ideal for driving 12-bit ADCs in systems that are sensitive to power and cost. The AD8137 is easy to apply, and its internal common-mode feedback architecture allows its output common-mode voltage to be controlled by the voltage applied to one pin. The internal feedback loop also provides inherently balanced outputs as well as suppression of even-order harmonic distortion products. Fully differential and single-ended-to- differential gain configurations are easily realized by the AD8137. External feedback networks consisting of four resistors determine the amplifier’s closed-loop gain. The power-down feature is beneficial in critical low power applications. The AD8137 is manufactured on Analog Devices’ proprietary second generation XFCB process, enabling it to achieve high levels of performance with very low power consumption. The AD8137 is available in the small 8-lead SOIC package and 3 mm × 3 mm LFCSP. It is rated to operate over the extended industrial temperature range of −40°C to +125°C. |
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