Audio op-amp with 145 mA output — headphone drive without a buffer
It delivers 32 MHz gain-bandwidth product and a 10 V/µs slew rate, with each channel rated for 145 mA output current. This combination makes it a direct-drive candidate for headphone amplifiers and active filter stages in professional audio, automotive infotainment, and industrial signal conditioning where the load impedance drops below 32 Ω.
32 MHz GBW and 10 V/µs slew rate — loop gain for low distortion
A 32 MHz gain-bandwidth product provides enough open-loop gain at 20 kHz to keep harmonic distortion below the audible threshold in most line-level and headphone circuits. The 10 V/µs slew rate is sufficient for a 3 Vrms output swing at 20 kHz without slew-rate limiting, yet it avoids the excess noise and stability sensitivity of faster amplifiers.
145 mA output per channel — direct headphone drive
Each of the two channels can source or sink 145 mA. That is enough to drive 32 Ω headphones to over 600 mW per channel, or 16 Ω loads to about 330 mW, without an external buffer stage. The 24-WQFN package with exposed pad helps pull heat out of the die when driving low-impedance loads continuously — the thermal pad should be soldered to a PCB copper plane. Supply current is 2.6 mA per channel, which keeps the total quiescent draw under 6 mA even with both amplifiers active.
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