LM3914VX

LM3914VX is a ten-channel LED display driver in the LM3914 family. It converts an analog input into a visual LED level indicator by driving 10 current-sinking LED outputs. It can operate in dot mode (one LED on) or bar mode (all LEDs up to the detected level) via a MODE control. A single external resistor sets the current for all LEDs, and the device provides a built-in 10-point reference ladder and comparators for level sensing. It runs from about 3 to 25 V and can source/sink a few milliamps per channel, with LED current largely independent of the supply. REF OUT/REF ADJ pins allow adjusting the reference, and the LED array is typically connected to a supply rail with the IC sinking current through each LED.
Common uses: VU meters, battery or level indicators, audio level meters, and panel indicators.
LM3914VX denotes a variant of the LM3914 (e.g., different package or temperature range); check the exact datasheet for package, temp range, and electrical limits for your part.

Equivalent / cross-reference for LM3914VX:
- LM3914 (TI/National)
- LM3914N-1 / LM3914N (DIP-18)
- LM3915 (audio level/LED driver, same 10-channel family)
- LM3916 (audio VU-meter driver)
- NJM3914 (New Japan Radio, pin-compatible)
Note: exact electricals may differ; check datasheets for reference/scaling differences.

Here are the key features of the LM3914VX:
- 10-channel LED driver with current-sink outputs (low-side) for 10 LEDs.
- External resistor (Rset) sets LED current: I_LED = 1.25V / Rset (typical range ~1 mA to ~30 mA per LED).
- BAR/DOT mode selectable via MODE pin (bar lights all up to the level; dot lights only the active one).
- Internal 1.25 V reference and 10-segment voltage ladder for linear display.
- Input range 0 to V+; scales with supply without brightness loss.
- Wide operating supply: typically 3 V to 25 V (max around 30 V in some versions).
- Outputs can sink up to ~30 mA per LED; suitable for direct LED drive.
- Simple external components and pin-compatible with common LM3914 setups.
- Applications: VU meters, audio level meters, battery indicators, level monitoring.
Note: Exact voltage/current specs can vary by package and revision; check the datasheet for the VX variant you have.

- Pin count: 18 pins (DIP-18 / SO-18; VX indicates a specific package variant).
- Function: LM3914VX is a 10-segment LED display driver. It provides 10 current-sinking outputs (D1–D10) to drive LEDs from V+. It converts an analog input (SIG) into a bar or dot LED display (MODE selects bar or dot). The LED current is set by an external resistor between REF OUT and REF ADJ. It includes a reference ladder and supports an adjustable full-scale range; supply up to about 25 V.

- Manufacturer: Texas Instruments (TI).
- Company type: A multinational American semiconductor company that designs and manufactures a broad range of integrated circuits, especially analog and mixed-signal devices.

LM3914VX is a 10‑segment LED display driver with current‑regulated outputs. It maps an analog input to a LED bar or dot display and can drive up to 10 LEDs directly.
Common applications:
- Audio level meters (VU meters) and audio level indicators
- Battery/power-supply level indicators
- DC voltage/current panel meters in test equipment
- Instrumentation and process monitoring displays
- LED indicators in consumer electronics and dashboards
Key features enabling these: wide supply range (≈3–25 V), adjustable LED current via a resistor, bar/dot mode selection, and no external multiplexing.

LM3914VX is an 18-pin IC, available in DIP-18 (through-hole) and SOIC-18 (surface-mount) variants.