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AN6884 LED Driver IC

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The AN6884 is a monolithic integrated circuit driving 5-LED and is capable of logarithmic (dB) bar graph display for input signal. Operating voltage range for AN6884 is 3.5 V to 16 V and current output is 15 mA.

 

Pin Configuration

Pin No.

Pin Name

Description

1 to 4 & 6

LED1, LED2….LED4 & LED 5

The 5 LEDs which has to be controlled is connected to these pins

5

GND

Ground Pin

7

AMP. Output

Amplifier Output Pin

8

AMP. Input

Amplifier Input Pin

9

Vcc

Power Supply Pin

 

Features

  • Operating Voltage Range: 3.5 V to 16 V
  • Constant Current Output: 15 mA
  • Built-in High Gain Amplifier: 26 dB
  • Low Noise when LED ON
  • Analog Controlled LED Driver IC with Logarithmic output

 

Note: Complete Technical Details can be found at the AN6884 datasheet given at the end of this page.

 

AN6884 Equivalent: NTE 1561

Alternative LED driver ICs: LM3914, CD4511, MAX7219, CD4054

 

Brief Note on AN6884

The AN6884 is an audio controlled LED driver IC. It can control maximum of 5 LEDs according to the audio signal input voltage. For an audio signal, voltage value changes with change in amplitude of the signal. By controlling the LED according to amplitude of audio signal we can visualize the audio signal. Operating voltage range for AN6884 is 3.5 V to 16 V.

Since the LEDs can be controlled without any flickering and flawlessly with equal brightness this ICs is commonly used in visual alarms and other metering/monitoring applications.

 

How to Use AN6884?

AN6884 IC doesn’t need a microcontroller and programming to control the LEDs, thus it can be easily operated with very little additional components. A sample application circuit for controlling 5 LEDs using AN6884 is given below.

How to Use AN6884

 

As you can see we only require 5 LEDs and three resistors as additional component to use this IC. The IC can operate between 3.5 V to 16V. Based on the audio signal voltage, the reference voltage has to be set in the circuit using the 10k variable resistor. The IC also allows the designer to set the required current that should flow through LED. Both the LED current and the reference voltage can be set with the resistor R and variable resistor VR.

 

Applications

  • Audio visualization circuits
  • Crude Battery level indicators
  • Low cost monitor devices
  • Digital gauges
  • Electronic displays
  • Fade bars

 

2D Model of AN6884 (9-SIP)

2D Model of AN6884

Component Datasheet

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