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AD8694 Fiches technique(PDF) 1 Page - Analog Devices |
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AD8694 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 20 page Low Power, 3.6 MHz, Low Noise, Rail-to- Rail Output, Operational Amplifiers ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Rev. D 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, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2009–2010 Analog Devices, Inc. All rights reserved. FEATURES Low power: 180 μA typical Very low input bias currents: 0.5 pA typical Low noise: 16 nV/√Hz typical 3.6 MHz bandwidth Offset voltage: 500 μV typical Low offset voltage drift: 4 μV/°C maximum Low distortion: 0.003% THD + N 2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply Available in very small 2 mm × 2 mm LFCSP packages APPLICATIONS Photodiode amplifiers Sensor amplifiers Portable medical and instrumentation Portable audio: MP3s, PDAs, and smartphones Communications Low-side current sense ADC drivers Active filters Sample-and-hold GENERAL DESCRIPTION The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/ ADA4692-4 are the quad rail-to-rail output, single-supply amplifiers featuring low power, wide bandwidth, and low noise. The ADA4691-2 has two independent shutdown pins, allowing further reduction in supply current. The ADA4691-4 is a quad with dual shutdown pins each controlling a pair of amplifiers and is available in the 16-lead LFCSP. The ADA4692-4 is a quad version without shutdown. These amplifiers are ideal for a wide variety of applications. Audio, filters, photodiode amplifiers, and charge amplifiers, all benefit from this combination of performance and features. Additional applications for these amplifiers include portable consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at low power. Industrial applications with high impedance sensors, such as pyroelectric and IR sensors, benefit from the high impedance and low 0.5 pA input bias, low offset drift, and enough bandwidth and response for low gain applications. The ADA4691/ADA4692 family is fully specified over the extended industrial temperature range (−40°C to +125°C). The ADA4691-2 is available in a 10-lead LFCSP and a 9-ball WLCSP. The ADA4692-2 is available in an 8-lead SOIC and 8-lead LFCSP. The ADA4691-4 is available in a 16-lead LFCSP. The ADA4692-4 is available in a 14-lead TSSOP. For pin configurations, see the Pin Configurations section. 1 0.1 0.01 0.001 10 100 1k 10k 20k FREQUENCY (Hz) ADA4692-2 VSY = ±2.5V AV = –1 TA = 25°C RL = 600Ω RL = 2kΩ Figure 1. THD + Noise vs. Frequency –80 –90 –100 –110 –120 –130 –140 100 1k 10k 100k FREQUENCY (Hz) ADA4692-2 VSY = ±2.5V VIN = 2.8V p-p AV = +1 TA = 25°C Figure 2. Channel Separation vs. Frequency Table 1. Micropower Low Power Low Power with Shutdown Standard Op Amp With Shutdown High Bandwidth Single AD8613 AD8591 AD8691 Dual AD8617 ADA4692-2 ADA4691-2 AD8592 AD8692 Quad AD8619 ADA4692-4 ADA4691-4 AD8594 AD8694 |
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