TDA7235 - English Editing Encyclopedia Entry

Product Overview

Category

TDA7235 belongs to the category of integrated audio amplifier circuits.

Use

The TDA7235 is primarily used for amplifying audio signals in various electronic devices such as radios, televisions, and portable audio players.

Characteristics

• The TDA7235 is a compact and highly efficient audio amplifier circuit.
• It offers excellent sound quality with low distortion and noise levels.
• This integrated circuit (IC) operates on a wide range of power supply voltages.
• It has built-in protection features to prevent damage from short circuits and thermal overload.

Package and Essence

The TDA7235 is available in a small outline package (SOP) or dual in-line package (DIP). Its essence lies in its ability to amplify audio signals accurately and efficiently.

Packaging/Quantity

The TDA7235 is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage: 6V to 18V
• Output Power: Up to 4 Watts
• Total Harmonic Distortion: Less than 0.5%
• Operating Temperature Range: -40°C to +85°C
• Input Sensitivity: Adjustable

Detailed Pin Configuration

The TDA7235 has a total of 9 pins, each serving a specific function:

1. VCC: Power supply voltage input
2. GND: Ground reference
3. IN+: Non-inverting input for audio signal
4. IN-: Inverting input for audio signal
5. BYPASS: Bypass pin for external components
6. OUT: Amplified audio output
7. MUTE: Mute control pin
8. ST-BY: Standby control pin
9. Vref: Reference voltage output

Functional Features

• High amplification gain for improved audio signal strength.
• Built-in mute and standby modes for power-saving and convenience.
• Adjustable input sensitivity to accommodate different audio sources.
• Thermal and short-circuit protection to ensure the safety of the circuit and connected devices.

Advantages and Disadvantages

Advantages

• Compact size and high efficiency make it suitable for portable devices.
• Excellent sound quality with low distortion and noise levels.
• Wide operating voltage range allows flexibility in various applications.
• Built-in protection features enhance reliability and durability.

Disadvantages

• Limited output power compared to higher wattage amplifiers.
• Requires external components for optimal performance.
• May not be suitable for high-power audio applications.

Working Principles

The TDA7235 operates as a class AB audio amplifier, utilizing both positive and negative halves of the input audio signal waveform. It amplifies the input signal by controlling the flow of current through its internal transistors, resulting in an amplified output signal.

Detailed Application Field Plans

The TDA7235 finds application in various electronic devices, including: 1. Portable audio players 2. Radios and boomboxes 3. Televisions and home theater systems 4. Car audio systems 5. Computer speakers

Detailed and Complete Alternative Models

1. TDA7265: Similar audio amplifier IC with higher output power capability.
2. LM386: Low-power audio amplifier IC suitable for battery-powered devices.
3. TDA2030: Audio amplifier IC with higher output power and wider voltage range.

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

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