TPA2005D1 1.5W 250Khz class-D Mono Audio Amplifier Breakout Board
Now available from PMD Way is this compact TPA2005D1 250Khz class-D Mono Audio Amplifier Breakout Board - a tiny audio amplifier built around the Texas Instruments TPA2005D1.
As a class-D amplifier it is an efficient way to drive an 8 Ohm speaker up to 1.4W. The fully-differential inputs are safe for floating audio signals such as from our MP3 Shield, and can also be connected to ground-referenced signals as well.
A shutdown input is provided to save power when the amplifier is not being used, and a solder jumper and header are provided to connect a volume-control potentiometer (not included).
Note: The amplifier’s class-D design outputs a 250kHz PWM-like signal that is restored to an analog voltage in the speaker’s coil.
This is what makes the amplifier so efficient, but because of the switching frequency, you should keep the amplifier as close to the speaker as possible to minimize possible interference.