OPA1656

Product Folder Order Now Technical Documents Tools & Software Support & Community OPA1656 SBOS901A – MARCH 2019 – REVISED JULY 2019 OPA1656 Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-BrownTM Audio Operational Amplifier 1 Features 1 Ultra-low noise: – Voltage noise: 2.9 nV/√Hz at 10 kHz – Current noise: 6 fA/√Hz at 1 kHz Low distortion: – 0.000029% (–131 dB) at 1 kHz – 0.000035% (–129 dB) at 20 kHz High open-loop gain: 150 dB High output current: 100 mA Low input bias current: 10 pA Slew rate: 24 V/μs Gain bandwidth product: 53 MHz Rail-to-rail output Wide supply range: ±2.25 V to ±18 V or 4.5 V to 36 V Quiescent current: 3.9 mA per channel 2 Applications Soundbar Turntable DJ controllers, mixers, and other DJ equipment Professional audio mixer or control surface High-fidelity D/A converter Guitar effects pedal Guitar amplifier and other music instrument amplifier Professional microphones and wireless systems Headset and headphones Vibration analysis Active Baxandall Tone Control Pad Bass Input ± + 1/2 OPA1656 Treble +15 ± Output + 1/2 OPA1656 -15 3 Description The OPA1656 is a Burr-Brown™ operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. The FET-input architecture achieves a low 2.9-nV/√Hz voltage noise density and 6-fA/√Hz current noise density, allowing for very low noise performance in a wide variety of circuits. The high bandwid...