Headphone output and supply flexibility
The TPA6111A2DR is a Class AB stereo amplifier in an 8-SOIC package, delivering 150mW per channel into a 16Ω load — enough to drive most consumer and portable headphones to a comfortable listening level without external heatsinking. Its supply range of 2.5V to 5.5V means it runs directly from a single lithium-ion cell or a 3.3V/5V rail, simplifying the power tree in battery-powered gear or line-level audio equipment.
Protection and pop-free shutdown
Built-in short-circuit and thermal protection keep the output stage from failing if the headphone jack sees a momentary short or the ambient temperature climbs inside a sealed enclosure. The depop feature suppresses the turn-on/turn-off click that otherwise couples into the headphones — a detail that matters in portable audio where the amplifier powers up on battery insertion. A dedicated shutdown pin lets the system microcontroller cut supply current when the headphones are unplugged, preserving battery life in handheld designs.
Temperature grade and package fit
The 8-SOIC footprint (3.90mm width, 0.154" pitch) is a standard surface-mount package that reflows on a basic convection profile and fits a two-layer PCB without via fan-out.
Active production and compliance
Fully ROHS3 compliant, with no exemptions that would complicate EU or California market entry.