OPA1655 - Texas Instruments

OPA1655 Audio Operational Amplifier

The OPA1655 and OPA1656 (OPA165x) are BurrBrown™ op amps 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 band.

Features

• 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
• Professional microphones and wireless systems
• Professional audio mixer/control surface
• Guitar amplifier and other music instrument amplifier
• .