Dot/Bar Display Driver The LM3916N-1 is a monolithic integrated circuit manufactured by National Semiconductor (NSC). It is designed as a dot/bar display driver for analog signals. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** National Semiconductor (NSC)
- **Type:** LED Display Driver
- **Function:** Dot/Bar Display Driver
- **Input Voltage Range:** 3V to 25V
- **Output Current:** Adjustable (up to 30mA per LED)
- **Number of Outputs:** 10 (for driving LEDs)
- **Reference Voltage:** Adjustable (internal or external)
- **Operating Temperature Range:** 0°C to +70°C
- **Package:** 18-Pin DIP (Dual In-Line Package)
### **Descriptions:**
- The LM3916N-1 is a logarithmic display driver, making it suitable for applications like VU meters, audio level indicators, and signal strength displays.
- It can drive up to 10 LEDs in either dot mode (single LED lit) or bar mode (multiple LEDs lit progressively).
- The logarithmic scaling (3dB per step) is ideal for audio and other applications requiring a non-linear response.
- It includes an internal voltage reference and adjustable current limiting for the LEDs.
### **Features:**
- **Logarithmic Scaling:** 3dB per step for accurate signal level representation.
- **Dot/Bar Mode Selectable:** User-configurable via a single pin.
- **Wide Supply Voltage Range:** Operates from 3V to 25V.
- **Low Standby Current:** Minimal power consumption when not driving LEDs.
- **Internal Voltage Reference:** Eliminates the need for external components in basic setups.
- **LED Brightness Control:** Adjustable via an external resistor.
This information is based solely on the manufacturer's datasheet and technical documentation.
