OPA2134Dual FET-input audio operational amplifier

OPA2134 contains two FET-input operational amplifiers optimized for low-noise, low-distortion analog signal conditioning. Each channel has independent inputs, output and external feedback while sharing its positive and negative supply rails. Its input bias current is only a few picoamperes typically at room temperature. The specified audio distortion is measured under particular gain, frequency, amplitude and load conditions; it does not describe every possible circuit. This reference follows TI revision B and the dual-channel PDIP-8 and SOIC-8 packages. The example uses ±15 V rails, one gain-of-three channel and one voltage follower. The device is not rail-to-rail, so both input and output headroom matter.