TPA032D04

The TPA032D04 is a monolithic power IC stereo audio amplifier that operates in extremely efficient Class-D operation, using the high switching speed of power DMOS transistors to replicate the analog input signal through high-frequency switching of the output stage. This allows the TPA032D04 to be configured as a bridge-tied load (BTL) amplifier capable of delivering up to 10 W of continuous average power into a 4-W  load at 0.5% THD+N from a 12-V power supply in the high-fidelity audio frequency range (20 Hz to 20 kHz). A BTL configuration eliminates the need for external coupling capacitors on the output.

Features of the TPA032D04 are:(1)extremely efficient class-D stereo operation; (2)drives L and R channels, plus stereo headphones; (3)10-W BTL output into 4 W  from 12 V; (4)32-W peak music power; (5)fully specified for 12-V operation; (6)low shutdown current; (7)class-AB headphone amplifier; (8)thermally-enhanced powerPAD(TM) surface-mount packaging; (9)thermal and under-voltage protection.

The absolute maximum ratings of the TPA032D04 can be summarized as:(1)supply voltage:14V;(2)input voltage:0.3 V to 7 V;(3)storage temperature:-65 to 260;(4)operating virtual junction temperature range:-40 to 150.Stresses beyond thoselisted under "absolute maximum ratings" may cause permanent damage to thedevice. These are stress ratings only, and functional operation of the deviceat these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-ratedconditions for extended periods may affect devicereliability.The TPA032D04 has differential inputs to minimize distortion at the input to the IC. Since these inputs nominally sit at 1.5 V, dc-blocking capacitors are required on each of the four input terminals. If the signal source is single-ended, optimal performance is achieved by treating the signal ground as a signal. In other words, reference the signal ground at the signal source, and run a trace to the dc-blocking capacitor, which should be located physically close to the TPA032D04. If this is not feasible, it is still necessary to locally ground the unused input terminal through a dc-blocking capacitor.