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1 / 20 page Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers Data Sheet AD8671/AD8672/AD8674 Rev. F Document Feedback InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No licenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Very low noise: 2.8 nV/√Hz, 77 nV p-p Wide bandwidth: 10 MHz Low input bias current: 12 nA max Low offset voltage: 75 μV max High open-loop gain: 120 dB min Low supply current: 3 mA typ per amplifier Dual-supply operation: ±5 V to ±15 V Unity-gain stable No phase reversal APPLICATIONS PLL filters Filters for GPS Instrumentation Sensors and controls Professional quality audio GENERAL DESCRIPTION The AD8671/AD8672/AD8674 are very high precision amplifiers featuring very low noise, very low offset voltage and drift, low input bias current, 10 MHz bandwidth, and low power consumption. Outputs are stable with capacitive loads of over 1000 pF. Supply current is less than 3 mA per amplifier at 30 V. The AD8671/AD8672/AD8674’s combination of ultralow noise, high precision, speed, and stability is unmatched. The MSOP version of the AD8671/AD8672 requires only half the board space of comparable amplifiers. Applications for these amplifiers include high quality PLL filters, precision filters, medical and analytical instrumentation, precision power supply controls, ATE, data acquisition, and precision controls as well as professional quality audio. The AD8671/AD8672 are specified over the extended industrial temperature range (−40°C to +125°C), and the AD8674 is specified over the industrial temperature range (−40°C to +85°C). The AD8671/AD8672 are available in the 8-lead SOIC and 8-lead MSOP packages. The AD8674 is available in 14-lead SOIC and 14-lead TSSOP packages. Surface-mount devices in MSOP packages are available in tape and reel only. PIN CONFIGURATIONS NC = NO CONNECT NC 1 –IN 2 +IN 3 V– 4 NC V+ OUT NC 8 7 6 5 AD8671 TOP VIEW (Not to Scale) Figure 1. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8) OUT A 1 –IN A 2 +IN A 3 V– 4 V+ OUT B –IN B +IN B 8 7 6 5 AD8672 TOP VIEW (Not to Scale) Figure 2. 8-Lead SOIC-N (R-8) and 8-Lead MSOP (RM-8) OUT A 1 –IN A 2 +IN A 3 V+ 4 +IN B 5 –IN B 6 OUT B 7 OUT D –IN D +IN D V– 14 13 12 11 +IN C –IN C OUT C 10 9 8 AD8674 TOP VIEW (Not to Scale) Figure 3. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14) The AD8671, AD8672, and AD8674 are members of a growing series of low noise op amps offered by Analog Devices, Inc. Table 1. Voltage Noise Package 0.9 nV 1.1 nV 1.8 nV 2.8 nV 3.8 nV Single AD797 AD8597 ADA4004-1 AD8675 AD8671 Dual AD8599 ADA4004-2 AD8676 AD8672 Quad ADA4004-4 AD8674 |
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