NXP TDA7052A

TDA7052A 概要

The TDA7052A are versatile audio components that offer a range of features to enhance audio playback in various applications. These mono BTL (Bridge-Tied Load) output amplifiers are equipped with DC volume control, making them particularly suitable for a wide range of electronic devices, from televisions and monitors to portable recorders and radios.

Specification

• Supply voltage range: 4.5V to 18V
• Low quiescent current: 4mA
• Output power: 1.2W at 8 Ohms and 0.7W at 16 Ohms
• Low distortion: 0.2% at 1kHz and 0.5W
• Thermal protection
• Short-circuit proof
• Pin compatible with TDA7052

特徴

DC Volume Control: The built-in DC volume control allows for precise adjustment of audio volume levels without introducing noise or distortion, ensuring a smooth and clean listening experience.

Short-Circuit Proof: The amplifiers are designed to withstand short-circuit conditions at the output, protecting the amplifier and connected components from potential damage.

Mute Mode: The mute mode functionality allows for instant audio muting when required. This can be useful for scenarios where quick and temporary silencing of audio output is necessary.

Good Overall Stability: The amplifiers exhibit good stability across different operating conditions, ensuring consistent and reliable audio performance under varying load and temperature conditions.

Low HF Radiation: The design of the TDA7052A/AT amplifiers minimizes high-frequency radiation, which can reduce electromagnetic interference (EMI) and maintain clean audio signals without interfering with nearby electronic components.

Thermal Protection: Thermal protection mechanisms are integrated to prevent the amplifier from overheating. This safeguard enhances the longevity of the amplifier and ensures it continues to function reliably.

Low Power Consumption: The amplifiers' low power consumption is advantageous for energy-efficient operation, extending battery life in portable devices and reducing power usage in other applications.

No Switch-On and Off Clicks: The amplifiers are designed to eliminate audible clicks or pops during power on and power off transitions, contributing to a seamless and professional audio experience.

Few External Components: The design of the TDA7052A/AT amplifiers minimizes the need for additional external components, simplifying the circuit design and reducing the overall component count in the application.

ESD Protection: All pins of the amplifiers are electrostatic discharge (ESD) protected. This safeguards the amplifier from damage or malfunction caused by static electricity buildup or sudden discharges.

TDA7052A Advantages

Versatile Mono Bridge-Tied Load Amplifier with DC Volume Control
The TDA7052A offers versatility as a mono Bridge-Tied Load (BTL) amplifier with integrated DC volume control. This combination of features provides flexibility in designing audio systems for various applications.

Bridge-Tied Load Configuration for Enhanced Efficiency
Utilizing the Bridge-Tied Load configuration, the TDA7052A achieves higher efficiency in driving loads such as loudspeakers or headphones. This configuration improves power utilization and minimizes distortion, enhancing overall audio performance.

Seamless DC Volume Control for Improved User Experience
Featuring built-in DC volume control, the TDA7052A ensures a smooth and hassle-free adjustment of audio output levels. This feature is particularly valuable in applications like televisions, monitors, and radios, where users require precise and artifact-free volume adjustments.

Integrated Missing Current Limiter for Safety and Reliability
The TDA7052A distinguishes itself with an integrated Missing Current Limiter (MCL), a protective mechanism that activates when the current difference between output terminals exceeds a predefined threshold. This advanced safeguard enhances the amplifier's safety and reliability, especially in scenarios involving compromised or short-circuited loads.

Dual Purpose of the Missing Current Limiter
The MCL in the TDA7052A serves a dual purpose. Firstly, it prevents excessive current flow through the amplifier, mitigating potential overheating and damage risks to the IC and connected components. Secondly, it safeguards against load disconnections or malfunctions, safeguarding both the amplifier and the connected speakers or headphones.

Ideal for Headphone Applications with Single-Ended Output
The TDA7052A's MCL, set at 100mA, makes it an optimal choice for single-ended headphone applications. This level of current protection ensures that the amplifier intervenes before significant damage can occur in case of short circuits or other issues. This feature enhances its suitability for personal audio devices, prioritizing user safety and equipment protection.

応用

Portable Battery-Powered Devices: TDA7052A is commonly used in portable devices that operate on batteries. These include radios, tape recorders, and toys. Its low power consumption and compact size make it suitable for such applications.

Low Voltage Audio Systems: The amplifier's design makes it appropriate for low voltage audio systems, where it can provide sufficient audio amplification without requiring high supply voltages.

Personal Computers: TDA7052A can be employed in personal computers and other small electronic devices where audio amplification is needed, such as small desktop speakers.

Intercom Systems: Due to its simplicity and low power requirements, TDA7052A finds use in intercom systems, allowing for clear audio communication in various settings.

TV Sound Systems: In applications like small TV sound systems or soundbars, the TDA7052A can provide the necessary amplification for improved audio quality.

Portable Recorders: TDA7052A can be utilized in portable audio recorders to amplify audio signals from microphones or other sources before recording.

Radios: The amplifier is well-suited for radios, enhancing the audio output quality of these devices.

TDA7052A Amplifier Circuit

TDA7052A Equivalent Parts

TDA7052A (Manufacturer: NXP):

Function: Audio power amplifier primarily used in low-power applications.
Features: Mono audio amplifier, low power consumption, integrated volume control, suitable for battery-powered devices.
Applications: Portable audio devices, intercom systems, small speakers.

TDA7052 (Manufacturer: NXP):

Function: Similar to TDA7052A, an audio power amplifier for low-power audio applications.
Features: Mono audio amplifier, low power consumption, simple design, compact size.
Applications: Similar to TDA7052A, suitable for battery-operated audio devices.

LM386 (Manufacturer: Texas Instruments):

Function: Low voltage audio amplifier with versatile usage.
Features: Wide supply voltage range, simple to use, adjustable gain, used for various audio applications.
Applications: Audio amplification in small devices like radios, portable speakers, guitar amplifiers.

TDA2822 (Manufacturer: STMicroelectronics):

Function: Dual audio power amplifier.
Features: Two separate amplification channels, low distortion, low crossover distortion.
Applications: Stereo audio systems, intercoms, small radio amplification.

TPA3110 (Manufacturer: Texas Instruments):

Function: Stereo Class-D audio amplifier with high efficiency.
Features: High efficiency due to Class-D operation, wide voltage range, built-in short-circuit and thermal protection.
Applications: Stereo audio amplification, home audio systems, multimedia speakers.

LM1875 (Manufacturer: Texas Instruments):

Function: High-performance audio power amplifier.
Features: High output power, low distortion, wide voltage range, suitable for hi-fi applications.
Applications: Hi-fi stereo systems, home theater systems, high-quality audio amplification.

NJM2073 (Manufacturer: New Japan Radio):

Function: Dual low voltage audio power amplifier.
Features: Dual amplification channels, low voltage operation, low distortion, wide voltage range.
Applications: Stereo amplification in battery-operated devices, portable audio equipment.

MAX9744 (Manufacturer: Maxim Integrated):

Function: 20W stereo Class-D audio power amplifier.
Features: High efficiency, integrated volume control, thermal and short-circuit protection.
Applications: Stereo amplification in multimedia speakers, portable audio systems, DIY audio projects.

仕様