MC34119D

Product Overview

• Category: Integrated Circuit
• Use: Audio Amplifier
• Characteristics: Low Power, Wide Voltage Range, High Signal-to-Noise Ratio
• Package: Dual Inline Package (DIP)
• Essence: The MC34119D is a low power audio amplifier integrated circuit designed for use in various audio applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 3V to 16V
• Quiescent Current: 2.5mA
• Output Power: 1W
• Signal-to-Noise Ratio: 80dB
• Total Harmonic Distortion: 0.2%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC34119D has a total of 8 pins arranged as follows:

```

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| | --| VCC OUT|-- --| GND IN-|-- --| BYP IN+|-- --| AGC NC|-- --| AGC VREF|-- --| AGC GAIN|-- |___________| ```

Functional Features

• Low power consumption makes it suitable for battery-powered devices.
• Wide voltage range allows for flexibility in different power supply configurations.
• High signal-to-noise ratio ensures clear audio reproduction.
• Automatic Gain Control (AGC) feature maintains consistent volume levels even with varying input signals.

Advantages

• Compact size and DIP package make it easy to integrate into various electronic devices.
• Low quiescent current helps prolong battery life in portable applications.
• Wide operating temperature range allows for reliable performance in extreme environments.

Disadvantages

• Limited output power may not be suitable for high-power audio applications.
• Total harmonic distortion of 0.2% may introduce some level of audio distortion.

Working Principles

The MC34119D operates as an audio amplifier by amplifying the input audio signal received at the IN+ pin. The AGC feature ensures that the output volume remains consistent even when the input signal varies in amplitude. The amplified audio signal is then available at the OUT pin for further processing or driving a speaker.

Detailed Application Field Plans

The MC34119D can be used in various audio applications, including:

1. Portable audio devices such as MP3 players and smartphones.
2. Communication systems requiring audio amplification, such as intercoms and walkie-talkies.
3. Automotive audio systems for amplifying signals from radios or other audio sources.
4. Home entertainment systems for amplifying audio signals from TVs, DVD players, or gaming consoles.

Detailed and Complete Alternative Models

Some alternative models to the MC34119D include:

1. LM386: A popular audio amplifier IC with similar characteristics and package options.
2. TDA7052: Low voltage audio amplifier IC suitable for battery-powered applications.
3. MAX9814: High-performance audio amplifier IC with adjustable gain and low noise.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific application requirements.

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