M51903L

The M51903L is a semiconductor integrated circuit consisting of a circuit designed for use in level meters.It is capable of driving 5 LEDs to create a bar-type display.In accordance with the input level,the uppermost LED brightness varies to form a linear indicator,making this device ideal for use in signal meters and VU meters.A low-voltage reference power supply is built in,so that the only external components required are LEDs,resistors and capacitors.

The M51903L has 6 features.The first one is bar-type display of input level using 5 LEDs.The second one is the uppermost LED brightness varies linearly with respect to the input level resulting in a high-resolution display with no radiation.The third one is by changing the external resistance values,the LED brightness can be adjusted is Io = 15mA(max).The fourth one is operates over a wide range of supply voltages is Vcc = 4 to 18V.The fifth one is built-in reference supply.The sixth one is high input impedance is IIN = 100nA(typ.).The M51903L has a application,it's signal meters,VU meters,tuning meters,and other general display spplications.The M51903L have two recommended operating conditions.The first one is supply voltage range is 4 to 18V.The second one is rated supply voltage is 10V.

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