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HT8697
9.5W Anti-Clipping Stereo Class D Audio Amplifier
HT8696,7 is a filter-less stereo Class D audio power amplifier IC with maximum output power of 2×9.5W at VDD = 8.5V, THD+N = 10%, RL = 4Ω. HT8697 can also work in Class AB mode with maximum instantaneous output power of  2×9.0W at VDD = 8.5V, THD+N = 10%, RL = 4Ω.HT8696,7 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. It also supplies ACF OFF mode.HT8696,7 has a filter-less modulation circuit which directly drives speakers while realizes low distortion and low noise characteristics. Thanks to filter-less, circuit design with fewer external parts can be made in portable applications.HT8697 are free to change modes between Class AB and Class D. While in Class AB mode, EMI is not concerned as a problem as Class D mode.HT8696,7 has the independent Shutdown function which can minimize the power consumption at standby function. As for protection function, over current protection function for speaker output terminals, over temperature protection function, and low supply voltage malfunction preventing function are also prepared.
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FEATURE
  • Anti-Clipping Function (ACF)
  • Filter-less Modulation, Eliminating Output Filter
  • Output Power

    2×9.5W@ Class D, 2×9.0W@Class AB
    (VDD=8.5V, RL=4Ω, THD+N=10%,)
    2×6.7W@ Class D or Class AB
    (VDD=7.2V, RL=4Ω, THD+N=10%)
  • Over Current Protection, Thermal Protection, Low voltage malfunction prevention function included
  • Pb-Free Packages, SOP16L-PP(HT8696), TSSOP20L-PP(HT8697)
APPLICATIONS

  • Outdoor Speakers         
  • MP4/GPS


  • Bluetooth Speakers        
  • Portable Speakers
  • 2.1 Channel Speakers 
  • Megaphone
  • iphone/ipod/ipod docking    
  • LCD TV/Monitor
  • Tablet PC/Note Book     
  • Portable Gamers

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TERMINAL FUNCTION *1 

HT8697Terminal No.NameI/OFunction
1PVDDLPowerPower supply for Left Channel
2OUTL-OLeft channel negative output terminal (BTL-)
3PGNDLGroundPower and analog ground for Left channel
4OUTL+OLeft channel positive output (BTL+)
5INL+ALeft channel positive input terminal (differential +)
6INL-ALeft channel negative input terminal (differential -)
7AVDDRPowerAnalog power supply for Right Channel
8PVDDRPowerPower supply for Right Channel
9OUTR-ORight channel negative output terminal (BTL-)
10PGNDRGroundPower and analog ground for Right channel
11OUTR+ORight channel positive output terminal (BTL+)
12INR+ARight channel positive input terminal (differential +)
13INR-ARight channel negative input terminal (differential -)
14ABDRIClass AB and Class D switch terminal
15CTRLIShutdown and ACF control terminal
16AVDDLPowerAnalog power supply for Left Channel
*1      I: Input terminal   O: Output terminal   A: Analog terminal
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