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ADA4177-2ARZ-R7 Datasheet(PDF) 1 Page - Analog Devices |
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ADA4177-2ARZ-R7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 31 page OVP and EMI Protected, Precision, Low Noise and Bias Current Op Amps Data Sheet ADA4177-1/ADA4177-2/ADA4177-4 FEATURES Low offset voltage: 60 µV maximum at 25°C (8-lead and 14-lead SOIC) Low offset voltage drift: 1 µV/°C maximum (8-lead and 14-lead SOIC) Low input bias current: 1 nA maximum at 25°C Low voltage noise density: 8 nV/√Hz typical at 1 kHz Large signal voltage gain (A VO): 100 dB minimum over full supply voltage and operating temperature Input overvoltage protection to 32 V above and below the supply voltage rail Integrated EMI filter 70 dB typical rejection at 1000 MHz 90 dB typical rejection at 2400 MHz Rail-to-rail output swing Low supply current: 500 µA typical per amplifier Wide bandwidth Gain bandwidth product (A V = +100): 3.5 MHz typical Unity-gain crossover (A V = +1): 3.5 MHz typical −3 dB bandwidth (A V = +1): 6 MHz typical Dual-supply operation Specified at ±5 V to ±15 V, operates over ±2.5 V to ±18 V Unity-gain stable No phase reversal APPLICATIONS Wireless base station control circuits Optical network control circuits Instrumentation Sensors and controls Thermocouples, resistor thermal detectors (RTDs), strain gages, shunt current measurements Precision filters GENERAL DESCRIPTION The ADA4177-1 single channel, ADA4177-2 dual channel, and ADA4177-4 quad channel amplifiers feature low offset voltage (2 µV typical) and drift (1 µV/°C maximum), low input bias current, low noise, and low current consumption (500 µA typical). Outputs are stable with capacitive loads of more than 1000 pF with no external compensation. The inputs of the ADA4177-1, ADA4177-2, and ADA4177-4 set a new standard in precision amplifier robustness, providing input protection against signal excursions 32 V beyond either supply, as well as 70 dB of rejection for electromagnetic interference (EMI) at 1000 MHz. PIN CONNECTION DIAGRAM Figure 1. ADA4177-2 Applications for this amplifier include sensor signal conditioning (such as thermocouples, RTDs, and strain gages), process control front-end amplifiers, and precision diode power measurement in optical and wireless transmission systems. The ADA4177-2 and ADA4177-4 operate over the −40°C to +125°C industrial temperature range. The ADA4177-1 and the ADA4177-2 are available in an 8-lead SOIC package and an 8-lead MSOP package. The ADA4177-4 is available in a 14-lead TSSOP and a 14-lead SOIC package. Figure 2. Overvoltage Current Limiting, Voltage Follower Configuration Table 1. Evolution of Protected Input Op Amps by Generation1 Gen. 1, OVP (10 V) Gen. 2, OVP (25 V) Gen. 3, OVP (32 V) Gen. 4 EMI Filters Gen. 5, OVP (32 V) + EMI OP191 ADA4091-2 ADA4096-2 AD8657 ADA4177-1 OP291 ADA4091-4 ADA4096-4 AD8659 ADA4177-2 OP491 ADA4092-4 AD8546 ADA4177-4 AD8548 ADA4661-2 ADA4666-2 1 Gen. stands for Generation. OUT A 1 –IN A 2 +IN A 3 V– 4 V+ 8 OUT B 7 –IN B 6 +IN B 5 ADA4177-2 TOP VIEW (Not to Scale) 12 –10 –8 –6 –4 –2 0 2 4 6 8 10 VIN (V) –50 50 30 10 –10 –30 VSY = ±15V 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 ©2014–2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
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