TSM3914

The TSM3914 are functional replacements for a variety of conventional meters.Each combines a 10-element LED array and a monolithic integrated circuit display driver.Successive LEDs light as the analog input voltage level increases past prescaled threshold points.It provides a linear analog display,with internal threshold points linearly scaled.A logarithmic display is provided by the TSM3915 with threshold points set on 3 dB intervals.The driver circuit contains an adjustable voltage reference which precisely sets LED thresholds.Current drives to the LEDs are regulated and programmable,eliminating the need for resistors.The entire display can operate from supply voltages as low as 3V and as high as 24V.

The TSM3914 can be used in power meter in stereo systems,S meter in Ham and CB radios,VU meter in tape recorders,process control meters and replacement for edge meters.The absolute maximum raings can be summarized as:(1)power dissipation-driver:500 mW;(2)V+ voltage:24V;(3)Vled voltage: 24V;(4)input signal overvoltage:+/-35V;(5)voltage on resistor string:-100mV to V+;(6)reference load current:10 mA;(7)operating temperature range:0 to +70;(8)storage temperature range:-20 to +70;(9)lead temperature range(soldering,5 seconds):230.If you want to know more information such as the electrical characteristics about TSM3914, please download the datasheet in www.seekic.com and www.chinaicmart.com .