LM3915
The LM3915 is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs, or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display. The LM3915 is specifically designed to accommodate audio level and power monitoring, instrument monitoring, and other applications requiring a logarithmic response. By monitoring voltage levels, it can indicate power, VU-metering, or any other application requiring an analog display from a few millivolts to several volts.
Key Features:
- Drives LEDs, LCDs, or vacuum fluorescent displays
- Logarithmic 3 dB/step display
- Adjustable reference voltage
- Adjustable LED brightness
- Internal voltage reference from 1.2V to 12V
- Wide supply voltage range: 3V to 25V
- Low power consumption
- Current drive to LEDs: 30 mA without external transistors
- Cascadable for more displays
- Display: 10-segment LED, LCD, or vacuum fluorescent display
- Reference Voltage: Adjustable from 1.2V to 12V
- Supply Voltage Range: 3V to 25V
- LED Drive Current: 30 mA (per LED)
- Operating Temperature Range: 0°C to +70°C
- Package: DIP-18, SO-18
- Audio level indicators
- Power meter displays
- Battery level indicators
- Instrument monitoring
- VU-metering
- Industrial process control