is a stereo Audio Power Amplifier
in a 24-pin TSSOP thermally enhanced package capable of delivering 2 W of continuous RMS power per channel into 3-? loads. This device minimizes the number of external components needed, simplifying the design, and freeing up board space for other features. When driving 1 W into 8-? Speakers
has less than 0.8% THD+N across its specified frequency range. Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise in the Speakers
Amplifier gain is internally configured and controlled by way of two terminals (GAIN0 and GAIN1). BTL gain settings of ?2, ?6, ?12, and ?24 V/V are provided, while SE gain is always configured as ?1 V/V for headphone drive. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal Speakers
are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0112
into SE mode when the SE/BTL input is activated, and this reduces the gain to ?1 V/V. The TPA0112
consumes only 6 mA of supply current during normal operation. A miserly shutdown mode reduces the supply current to less than 150 ?A. The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of approximately 35?C/W are readily realized in multilayer PCB applications. This allows the TPA0112
to operate at full power into 8-? loads at an ambient temperature of 85?C.