Description
LM3914 | LM3915 Dot/Bar Display Driver
- LM3914: Linear voltage scale (good for general voltage measurements).
- LM3915: Logarithmic voltage scale (good for audio level indicators).
Dot/Bar Display Driver ICs in the LMxxxx series are designed to provide a straightforward solution for driving LED displays, enabling easy visualization of analog input voltages using dot or bar graphs. These ICs are commonly used in battery level indicators, audio level meters, and other applications that require a visual representation of varying signals. Here's an overview of the product line and key characteristics of these ICs:
General Features:
- Dot/Bar Mode Selection: These ICs can be configured to operate in either dot mode (lighting a single LED) or bar mode (lighting up all LEDs up to the measured signal level). A mode selection pin enables switching between these two modes.
- LED Driver Capability: The ICs can drive up to 10 LEDs, providing a clear, readable output in response to input signal changes.
- Adjustable Reference Voltage: Many LMxxxx drivers allow for adjusting the reference voltage to suit specific applications, giving users flexibility to set the input range and scale.
- Low Power Consumption: These drivers typically consume low power, making them ideal for use in battery-powered or portable devices.
- Minimal External Components: They require minimal external components for setup, which simplifies circuit design and reduces overall cost.