3W Ultra Low-EMI Anti-Clipping Stereo Class D Audio Power Amplifier
Description
HT6808
Ultra Low-EMI Anti-Clipping Class D Audio Amplifier
3W Ultra Low-EMI Anti-Clipping Stereo Class D Audio Power Amplifier
FEATURES
・ Anti-Clipping Function (ACF) ・ Excellent EMI Suppression Performance ・ Optimized PWM Output Stage Eliminating
Output Filter ・ Maximum Output
3.
0 W×2ch (VDD=5.
0V, RL=4Ω, THD+N=10%) 1.
9 W×2ch (VDD=5.
0V, RL=8Ω, THD+N=10%) ・ Efficiency 85% @ VDD =5.
0V, RL=4Ω, Po=1W ・ Low THD+N
0.
1%@ VDD =5.
0V, RL=4Ω, Po=1W
・ Channel separation 80dB@fIN=1kHz, Av=18dB
・ High S/N Ratio 90dB@ VDD =5.
0V, Av=18dB
・ Excellent Click-Pop Noise Reduction Function ・ MUTE Function ・ Independent Channel Power Down Function ・ Over-Current Protection Function, Thermal
Protection Function ・ Low Voltage Malfunction Prevention Function ・ Pb-Free Package, TSSOP-20, QFN-20
APPLICATIONS
・Portable Speakers, USB Speakers, FM Speakers ・MP3/MP4 ・Portable Gamers, Digital Photo Frame ・Mobile Phone, Notebook PC ・Small Size LCD TV/Monitors
GENERAL DESCRIPTION
HT6808 is an Ultra Low-EMI Anti-Clipping stereo Class D audio power amplifier IC with maximum output power of 3W, efficiency up to 90%.
HT6808 features Anti-Clipping Function (ACF) which detects output signal clip due to the over input signal and suppresses the output signal clip automatically.
Also the ACF function can adapt the output clip caused by power supply voltage down with battery.
It can significantly improves the sound quality, creating a very comfortable musical enjoyment, and to protect the speakers from overload damage.
In addition Sound quality and output power can be freely set by external resistance or capacitance of ACRC.
HT6808 also supply ACF OFF mode.
HT6808 has excellent EMI radiation suppression characteristics, well below the FCC Part15 Class B standards, simplifying system design and lowering system cost.
HT6808 has a “Pure Pulse Direct Speaker Drive Circuit” which directly drives speakers while reducing distortion of pulse output signal and reducing noise on the signal, and realizes the highe...
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