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The OPA134 series are ultra-low distorTIon, low noiseoperaTIonal amplifiers fully specified for audio applicaTIons.A true FET input stage was incorporated toprovide superior sound quality and speed for excepTIonalaudio performance. This in combination withhigh output drive capability and excellent dc performanceallows use in a wide variety of demandingapplications. In addition, the OPA134’s wide outputswing, to within 1V of the rails, allows increasedheadroom making it ideal for use in any audio circuit.OPA134 op amps are easy to use and free from phaseinversion and overload problems often found in commonFET-input op amps. They can be operated from±2.5V to ±18V power supplies. Input cascode circuitryprovides excellent common-mode rejection andmaintains low input bias current over its wide inputvoltage range, minimizing distortion. OPA134 seriesop amps are unity-gain stable and provide excellentdynamic behavior over a wide range of load conditions,including high load capacitance. The dual andquad versions feature completely independent circuitryfor lowest crosstalk and freedom from interaction,even when overdriven or overloaded.Single and dual versions are available in 8-pin DIPand SO-8 surface-mount packages in standard configurations.The quad is available in 14-pin DIP andSO-14 surface mount packages. All are specified for–40°C to +85°C operation. A
