I am designing a widget that has to have a speaker output (low power, between 1W and 2W, 8 Ohms, low-quality) with the limitation that one end of the speaker must be grounded.
There are lots of audio amplifier ICs to choose from, but all I could find have BTL outputs (they drive both ends of the speaker). Can I use such an amplifier (for example Class-AB TPA6211A1 or Class-D PAM8012) in a single-ended output configuration? Will I only loose maximum power output?
I have regulated 3.3V and unregulated 7.2V (2x li-ion) available. The signal source is a 3.3V MCU. Its DAC can generate single-ended and differential signals. The MCU also has I2S interfaces.