Jamaican Black Castor Oil

DescriptionThe LM3915N-1/NOPB is a monolithic IC that senses analogue voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3dB/step analogue display. One pin changes the display from a bar graph to a moving dot display. LED current drive is regulated and programmable, eliminating the need for current limiting resistors. The whole display system can operate from a single supply as low as 3V or as high as 25V. The IC contains an adjustable voltage reference and an accurate ten-step voltage divider. The high-impedance input buffer accepts signals down to ground and up to within 1.5V of the positive supply. Further, it needs no protection against inputs of ±35V. The input buffer drives 10 individual comparators referenced to the precision divider. Accuracy is typically better than 1db.3dB/Step, 30dB RangeDrives LEDs, LCDs or Vacuum FluorescentsBar or Dot Display Mode Externally Selectable by UserExpandable to Displays of 90dBInternal Voltage Reference from 1.2 to 12VInputs Operate Down to GroundOutput Current Programmable from 1 to 30mAInput Withstands ±35V without Damage or False OutputsOutputs are Current Regulated, Open CollectorsDirectly Drives TTL or CMOSInternal 10-step Divider is Floating and can be Referenced to a Wide Range of VoltagesGreen Product, No Sb/BrDocument:Datasheet