A high-fidelity headphones amplifier for current output audio DACs reference design

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>
• 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