LM1875T

Product Overview

Category: Integrated Circuit (IC)
Use: Audio Power Amplifier
Characteristics: High-performance, low-distortion, audio amplifier
Package: TO-220-5
Essence: The LM1875T is a monolithic power amplifier that delivers high-quality audio amplification with low distortion and noise.
Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier.

Specifications

Power Supply Voltage: ±22V to ±35V
Output Power: 20W
Total Harmonic Distortion: 0.015% (typical)
Input Impedance: 150kΩ
Operating Temperature Range: 0°C to 70°C

Detailed Pin Configuration

The LM1875T has a total of five pins:

Pin 1: Non-Inverting Input (+IN)
Pin 2: Inverting Input (-IN)
Pin 3: Negative Power Supply (-Vs)
Pin 4: Positive Power Supply (+Vs)
Pin 5: Output (OUT)

Functional Features

High-quality audio amplification with low distortion and noise.
Wide power supply voltage range allows flexibility in various applications.
Short-circuit protection ensures the safety of the amplifier and connected devices.
Thermal shutdown protection prevents overheating and damage to the IC.

Advantages and Disadvantages

Advantages: - High-performance audio amplification. - Low distortion and noise. - Wide power supply voltage range. - Short-circuit and thermal protection.

Disadvantages: - Limited output power compared to higher wattage amplifiers. - Requires external components for proper operation.

Working Principles

The LM1875T operates as a class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speakers or headphones. The IC utilizes a combination of voltage and current amplification stages to achieve high-quality audio reproduction with low distortion.

Detailed Application Field Plans

The LM1875T is commonly used in various audio applications, including:

Home audio systems
Car audio systems
Professional audio equipment
Musical instrument amplifiers
Public address systems

Detailed and Complete Alternative Models

TDA2030A
TDA2050
TDA7294
LM3886
STA540

These alternative models offer similar functionality and can be used as substitutes for the LM1875T in audio amplifier applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací LM1875T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of LM1875T in technical solutions:

Q: What is LM1875T? A: LM1875T is a popular audio power amplifier integrated circuit (IC) that can deliver high-quality audio output.
Q: What is the maximum power output of LM1875T? A: The LM1875T can deliver up to 20 watts of continuous power into a 4-ohm load or 8 watts into an 8-ohm load.
Q: Can LM1875T be used as a standalone amplifier? A: Yes, LM1875T can be used as a standalone amplifier by connecting it to a suitable power supply, input source, and speaker.
Q: What is the recommended power supply voltage for LM1875T? A: The recommended power supply voltage for LM1875T is typically ±25V DC.
Q: Can LM1875T be used in bridged mode? A: Yes, LM1875T can be configured in bridged mode to increase the power output by combining two amplifiers.
Q: Is LM1875T suitable for driving low-impedance speakers? A: Yes, LM1875T is designed to drive speakers with impedance as low as 4 ohms, making it suitable for various speaker configurations.
Q: Does LM1875T require external heat sinks? A: Yes, LM1875T requires external heat sinks to dissipate heat generated during operation and prevent overheating.
Q: Can LM1875T be used in audio systems with tone control circuits? A: Yes, LM1875T can be integrated into audio systems with tone control circuits to adjust the frequency response according to user preferences.
Q: Is LM1875T suitable for battery-powered applications? A: No, LM1875T is not typically recommended for battery-powered applications due to its higher power consumption.
Q: Can LM1875T be used in home audio systems or DIY projects? A: Yes, LM1875T is commonly used in home audio systems, DIY audio projects, and small-scale professional audio setups.

Please note that these answers are general and may vary depending on specific circuit designs and application requirements.