HL3279

The HL3279 is a miniaturized receiver ICs for use in infrared remote control system receiving preamplifiers.Capable of accepting a photodiode directly,these ICs house a high gain initial amplifier,a gain control amplifier,a limiter,a band pass filter,a detection circuit,two comparator circuits,gain control circuits,integrator circuits,a waveform shaping circuit assembled on a single chip.

The HL3279 has 7 features.The first one is wide operating supply voltage 2.7V to 5.5V.The second one is maximum interference safety againest optical and electrical disturbances.The third one is no external components necessary.The fourth one is the center frequency can be varied with option PADs(32.7kHz,36.7kHz,37.9kHz,40kHz,56.7kHz).The fifth one is internal filter for a high frequency lighting fluorescent lamp.The sixth one is open collector output (open collector output a pull-up resistance).The seventh one is output active low.

The HL3279 has some absolute maximum ratings.When parameter is supply voltage,the symbol is Vcc,the min is 0,the max is 6.0,the unit is V.When parameter is output voltage,the symbol is Vout,the min is 0,the max is 6,the unit is V.When parameter is output current,the symbol is Iout,the min is 0,the max is 2.5,the unit is mA.When parameter is operating temperature,the symbol is Topr,the min is -25,the max is 85,the unit is .When parameter is storage temperature,the symbol is Tst,the min is -40,the max is 125,the unit is .