MAX978ESE+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: High-performance, low-power, single-supply audio amplifier
• Package: 16-pin narrow SOIC (Small Outline Integrated Circuit)
• Essence: Provides high-quality audio amplification in a compact form factor
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: 1.4W (typical) into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise: 0.1% (typical) at 1kHz, 1.2W output power
• Shutdown Current: 0.1μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX978ESE+T has a total of 16 pins, which are assigned as follows:

1. VDD: Positive Supply Voltage
2. IN+: Non-Inverting Input
3. IN-: Inverting Input
4. GND: Ground
5. SHDN: Shutdown Control Input
6. OUT: Output
7. NC: No Connection
8. NC: No Connection
9. NC: No Connection
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. VSS: Negative Supply Voltage

Functional Features

• Single-supply operation simplifies design and reduces component count
• Low quiescent current extends battery life in portable applications
• Excellent audio quality with low distortion and noise
• Shutdown mode for power-saving when not in use
• Thermal shutdown protection prevents overheating

Advantages and Disadvantages

Advantages: - High-quality audio amplification - Low power consumption - Compact form factor - Shutdown mode for power-saving

Disadvantages: - Limited output power compared to higher wattage amplifiers - Restricted pin configuration options due to fixed pin assignment

Working Principles

The MAX978ESE+T is a single-supply audio amplifier that operates on a voltage range of 2.7V to 5.5V. It utilizes a class AB amplifier architecture to provide high-quality audio amplification. The amplifier accepts audio input signals through the non-inverting (IN+) and inverting (IN-) inputs, and amplifies them to drive an external speaker or load connected to the output pin (OUT). The shutdown control input (SHDN) allows the amplifier to enter a low-power state when not in use, reducing overall power consumption.

Detailed Application Field Plans

The MAX978ESE+T is commonly used in various applications, including:

1. Portable audio devices: Provides audio amplification for smartphones, tablets, portable media players, etc.
2. Home audio systems: Amplifies audio signals for speakers in home theater systems, stereo receivers, etc.
3. Automotive audio systems: Enhances audio output in car audio systems, amplifying signals for speakers or subwoofers.
4. Industrial equipment: Used in audio amplification circuits for public address systems, intercoms, and other industrial audio applications.

Alternative Models

For those seeking alternative options, the following models are worth considering:

1. TPA3116D2: A high-performance Class D audio amplifier with similar power output capabilities.
2. LM386: A low-power audio amplifier suitable for battery-powered applications.
3. TDA7294: A high-power audio amplifier designed for demanding audio systems.

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

In conclusion, the MAX978ESE+T is a high-performance, low-power audio amplifier that provides excellent audio quality in a compact form factor. Its single-supply operation and shutdown mode make it ideal for portable and battery-powered applications. With its wide range of applications and availability of alternative models, the MAX978ESE+T offers flexibility and versatility in audio amplification solutions.