ft2145B Datasheet 3.2w Class-d Audio Power Amplifier

Manufacturer: Fangtek

Overview: ft2145B 3.2W Class-D Audio Power Amplifier with Automatic Level Control.

Datasheet Details

Part number	ft2145B
Manufacturer	Fangtek
File Size	170.88 KB
Description	3.2W Class-D Audio Power Amplifier
Datasheet	ft2145B-Fangtek.pdf

The ft2145B is a high-efficiency, filterless Class-D audio power amplifier with automatic level control (ALC).

It operates from 2.7V to 5.5V supply.

When powered with 5V supply voltage, the ft2145B is capable of delivering 3.2W into 4Ω load or 1.8W into 8Ω load with 10% THD+D.

ALC on the audio output signals, which detects the output clipping caused by the over-level input signal and automatically adjusts the voltage gain of the amplifier to eliminate the clipping while maintaining the maximally-allowed dynamic range of the audio output signals. The ALC also eliminates the output clipping due to low battery supply voltage. As a Class-D power amplifier, the ft2145B features high efficiency (up to 90%) and high PSRR (75dB at 217Hz), which make the device an ideal audio.

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