描述 Description

The TPA2011D1 is a 3.2-W high efficiency filter-free class-D audio power amplifier (class-D amp) in a 1.21?mm × 1.16 mm wafer chip scale package (DSBGA) that requires only three external components.Features like 95% efficiency, 86-dB PSRR, 1.5 mA quiescent current and improved RF immunity make the TPA2011D1 class-D amp ideal for cellular handsets. A fast start-up time of 4 ms with no audible turn-on pop makes the TPA2011D1 ideal for PDA and smart-phone applications. The TPA2011D1 allows independent gain while summing signals from separate sources, and has a low 20 μV noise floor.

特性 Features

? Powerful Mono Class-D Amplifier
? 3.24 W (4 Ω, 5 V, 10% THDN)
? 2.57 W (4 Ω, 5 V, 1% THDN)
? 1.80 W (8 Ω, 5 V, 10% THDN)
? 1.46 W (8 Ω, 5 V, 1% THDN)

? Integrated Feedback Resistor of 300 kΩ
? Integrated Image Reject Filter for DAC Noise Reduction
? Low Output Noise of 20 μV
? Low Quiescent Current of 1.5 mA
? Auto Recovering Short-Circuit Protection
? Thermal Overload Protection
? 9-Ball, 1.21mm × 1.16 mm 0.4 mm Pitch DSBGA
? APPLICATIONS
? Wireless or Cellular Handsets and PDAs
? Portable Navigation Devices
? General Portable Audio Devices

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