The LM3916 is an integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing an electronic version of the popular VU meter.
The LM3916 is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing an electronic VU meter. It operates from a single supply of 3 V to 25 V and includes an adjustable voltage reference, a ten‑step divider, and programmable LED current.
The document includes a general description, features, typical applications, absolute maximum ratings, electrical characteristics, performance graphs, block diagrams, functional description, pin usage, physical dimensions, and compliance notices. It also explains how to select bar or dot display mode using the Mode Select pin and provides design guidelines for cascading multiple devices.
| Supply Voltage Range | 3 V to 25 V |
|---|---|
| Output Current Programmable Range | 1 mA to 30 mA |
| Number of LEDs Driven | 10 LEDs |
| Input Voltage Range | Down to ground, up to +35 V |
| Input Over‑Voltage Tolerance | +35 V |
| Operating Temperature Range | 0 °C to +70 °C |
| Package Type | 18‑lead molded DIP (LM3916N‑1) |
The LM3916 operates from a single supply voltage of 3 V to 25 V.
It can drive ten LEDs, LCDs, or vacuum‑fluorescent displays.
Connect pin 9 to pin 3 for bar mode; leave pin 9 open for dot mode.
The input can withstand up to +35 V without damage.