Texas Instruments: SoundPlus™ High-Performance, Low THD+N, Bipolar-Input Audio Operational Amplifier

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2.8 nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz, while driving a 32 Ω load at 100 mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable audio applications.

Features

  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise: –119 dB THD+N (142 mW / Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product: 32 MHz (G = +1000)
  • High Slew Rate: 10 V/µs
  • High Capacitive-Load Drive Capability: > 600 pF

Applications

  • High-Fidelity (HiFi) Headphone Drivers
  • Professional Audio Equipment
  • Analog and Digital Mixing Consoles
  • Audio Test and Measurement
  • High-End Blu-ray™ Players
  • High-End Audio and Video (A/V) Receivers

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