OPA4171AIPWR

1 Features• Supply range: 2.7 to 36 V, ±1.35 V to ±18 V• Low noise: 14 nV/√Hz• Low offset drift: ±0.3 μV/°C (typical)• RFI filtered inputs• Input range includes the negative supply• Input range operates to positive supply• Rail-to-rail output• Gain bandwidth: 3 MHz• Low quiescent current: 475 μA per amplifier• High common-mode rejection: 120 dB (typical)• Low-input bias current: 8 pA• Industry-standard packages:– 8-pin SOIC– 8-pin MSOP– 14-pin TSSOP• Micro packages:– Single in SOT-553– Dual in VSSOP-8

2 Applications• Tracking amplifier in power modules• Merchant power supplies• Transducer amplifiers• Bridge amplifiers• Temperature measurements• Strain gauge amplifiers• Precision integrators• Battery-powered instruments• Test equipment

3 DescriptionThe OPA171, OPA2171, and OPA4171 (OPAx171)are a family of 36-V, single-supply, low-noiseoperational amplifiers with the ability to operate onsupplies ranging from 2.7 V (±1.35 V) to 36 V (±18V). These devices are available in micro-packagesand offer low offset, drift, and bandwidth with lowquiescent current. The single, dual, and quadversions all have identical specifications for maximumdesign flexibility.Unlike most operational amplifiers, which arespecified at only one supply voltage, the OPAx171family is specified from 2.7 to 36 V. Input r role="presentation">beyond the supply rails do not cause se reversal.The OPAx171 family is stable with capacitive loadsup to 300 pF. The input can operate 100 mV belowthe negative rail and within 2 V of the top rail duringnormal operation. These devices can operate with fullrail-to-rail input 100 mV beyond the top rail, but withreduced performance within 2 V of the top rail.The OPAx171 series of operational amplifiers arespecified from –40°C to +125°C.