This TI Precision Verified Design circuit converts the differential current output of audio DACs to a single-ended voltage capable of driving low impedance headphones. This design is capable of meeting the high-fidelity performance levels currently being popularized in cell phones and portable audio players.
Features
- TI Precision Designs: Verified Design
- Includes theory, component selection, TINA-TI simulation, PCB schematic & layout, bill of materials, and measured results
- <.01dB variation (20Hz-20kHz)
- <5 Degrees Phase variation (20Hz-20kHz)
- Max Output Power: 55mW (32 ohms, THD+N: 0.00035%)
Parts Include:
OPA1612 SoundPlus™ Audio Operational Amplifier with 1.1nV/√Hz Noise, Low THD and Precision
OPA1622 SoundPlus™ Audio Operational Amplifier with High Performance, Low THD+N and Bipolar Input
Learn more by downloading the reference design below
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