2.8W stereo output — what the rating means for the speaker load
The TPA2016D2YZHT: Delivers 2.8W per channel into a 4Ω load — this is the continuous output power at the rated supply voltage and THD+N limit, sufficient for driving small speakers in portable Bluetooth speakers, docking stations, or battery-powered audio devices. The Class-D architecture keeps efficiency above 85% at full output, minimising heat dissipation in the 16-DSBGA package — no external heatsink required for most portable use cases.
I²C volume control and differential inputs
Volume is set digitally over the I²C bus — no external potentiometer or analog control voltage needed, which simplifies the BOM and allows software gain staging from a host MCU. Differential inputs reject common-mode noise picked up on long signal traces between the codec and the amplifier — useful in mixed-signal boards where ground bounce is a concern. Built-in short-circuit and thermal protection shut down the output stage before the die exceeds the safe operating area, protecting both the amplifier and the speaker load.
Package and supply integration
Operates from a single 2.5V to 5.5V supply rail — a 3.7V Li-ion battery or a 5V USB rail both fall within the range, making it straightforward to integrate into existing power trees without an extra regulator.