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ADA4084-2ARMZ Datasheet(PDF) 1 Page - Analog Devices |
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ADA4084-2ARMZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page 30 V, Low Noise, Rail-to-Rail I/O, Low Power Operational Amplifier Data Sheet ADA4084-2 Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2011–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Rail-to-rail input/output Low power: 625 µA typical Gain bandwidth product: 15.9 MHz at AV =100 typical Unity-gain crossover: 9.9 MHz typical −3 dB closed-loop bandwidth: 13.9 MHz typical at ±15 V Low offset voltage: 100 μV maximum (SOIC) Unity-gain stable High slew rate: 4.6 V/μs typical Low noise: 3.9 nV/√Hz typical at 1 kHz APPLICATIONS Battery-powered instrumentation Power supply control and protection Telecommunications DAC output amplifier ADC input buffer GENERAL DESCRIPTION The ADA4084-2 is a dual, single-supply, 10 MHz bandwidth amplifier featuring rail-to-rail inputs and outputs. It is guaran- teed to operate from 3 V to 30 V (or ±1.5 V to ±15 V). These amplifiers are well suited for single-supply applications requiring both ac and precision dc performance. The combina- tion of wide bandwidth, low noise, and precision makes the ADA4084-2 useful in a wide variety of applications, including filters and instrumentation. Other applications for these amplifiers include portable telecom- munications equipment, power supply control and protection, and use as amplifiers or buffers for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezoelectric, and resistive transducers. The ability to swing rail-to-rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios. The ADA4084-2 is specified over the industrial temperature range of −40°C to +125°C. The dual ADA4084-2 is available in the 8-lead SOIC, MSOP, and LFCSP surface-mount packages. PIN CONFIGURATION 1 2 3 4 8 7 6 5 OUT B –IN B +IN B V+ OUT A –IN A +IN A V– ADA4084-2 TOP VIEW (Not to Scale) NOTES 1. FOR THE LFSCP PACKAGE THE EXPOSED PAD MUST BE CONNECTED TO V–. Figure 1. 8-Lead MSOP (RM) 8-Lead SOIC (R) 8-Lead LFCSP (CP) The ADA4084-2 is a member of a growing series of high voltage, low noise op amps offered by Analog Devices, Inc., (see Table 1). For a more complete selection table of low input voltage noise amplifiers, see the AN-940 Application Note, Low Noise Amplifier Selection Guide for Optimal Noise Performance, available at www.analog.com. Table 1. Low Noise Op Amps Voltage Noise Single Dual Quad 1.1 nV/Hz AD8597 AD8599 1.8 nV/Hz ADA4004-1 ADA4004-2 ADA4004-4 2.8 nV/Hz RRO1 AD8675 AD8676 2.8 nV/Hz AD8671 AD8672 AD8674 3.2 nV/Hz OP27/OP37 3.9 nV/Hz RRIO2 ADA4084-2 1 Rail-to-rail output. 2 Rail-to-rail input/output. |
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