專賣hwd,國產ic ,sanken(三肯ic)等系列ic

general description
the hwd2109 is a dual audio power amplifier capable of
delivering 105mw per channel of continuous average power
into a 16? load with 0.1% (thd+n) from a 5v power supply.
boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. since the hwd2109 does not require
bootstrap capacitors or snubber networks, it is optimally
suited for low-power portable systems.
the unity-gain stable hwd2109 can be configured by external
gain-setting resistors.
the hwd2109 features an externally controlled, active-low,
micropower consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
key specifications
n thd+n at 1khz at 105mw continuous average power
into 16? 0.1% (typ)
n thd+n at 1khz at 70mw continuous average power
into 32? 0.1% (typ)
n shutdown current 0.4µa (typ)
features
n active-low shutdown mode
n "click and pop" reduction circuitry
n low shutdown current
n llp, msop, and so surface mount packaging
n no bootstrap capacitors required
n unity-gain stable
applications
n headphone amplifier
n personal computers
n microphone preamplifier
n pda’s