| Fangtek Introduces ft4888 2.1W Stereo Class AB Audio Power Amplifier with Headphone Amplifier and Surrounding Effect。 |
| The ft4888 is a 2.1W bridge-connected dual audio amplifier. When supplied with 5V voltage, the ft4888 can deliver 2.1W to a 4Ω load or 2.4W to 3Ω load with the THD+N rate lower than 1.0%。 |
| The ft4888 provides high quality dual-channel output while requiring few external components and consuming very little PCB space. With two device selection inputs (HP_LOGIC and HP_SENSE) of different logic level thresholds respectively, the ft4888 can connect to a pair of speakers or to a stereo headphone. The HP_SENSE logic connects to the headphone jack to detect if headphone is present. The other logic, HP_LOGIC, is determined by standard logic level standards.
The ft4888 also features an optional 3D surrounding design which can help widen the perceived soundstage from a stereo audio signal to improve stereo channel sounding effect。 |
| The ft4888’s power-saving feature is another plus tailored for handheld device. When the power-saving mechanism is activated, only 0.04μA current is running on the ft4888. Other features including thermal shutdown protection and “click and pops” reduction during power-up ensure the system safety and reliability。 |
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| Features： |
| ·Dual channel audio amplifier design |
| ·User-configurable headphone select scheme |
| ·3D effect enhancement |
| ·Micro power shutdown mode |
| ·Thermal shutdown protection |
| ·Improved “click and pop” suppression circuitry |
| ·QFN-24 package |
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