圖片僅供參考
規格
| 屬性 | 價值 |
| Package / Case | LLP-8 |
| Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature | + 85 C |
| Brand | Texas Instruments |
| Product | Audio Amplifiers |
| Product Type | Audio Amplifiers |
| Subcategory | Audio ICs |
| Series | LM4673 |
| Supply Voltage - Min | 2.4 V |
| Supply Voltage - Max | 5.5 V |
| Class | Class-D |
| Output Power | 2.65 W |
| THD plus Noise | 0.03 % |
| Audio - Load Impedance | 8 Ohms |
| Packaging | Reel |
| Factory Pack Quantity:Factory Pack Quantity | 1000 |
| Shipping Restrictions | Mouser does not presently sell this product in your region. |
| Output Type | 1-Channel Mono |
| Description/Function | Speaker |
| Height | 0.8 mm |
| Input Type | Differential |
| Length | 3 mm |
| Output Signal Type | Differential |
| PSRR - Power Supply Rejection Ratio | 78 dB |
| Supply Type | Single |
| Width | 3 mm |
| CMRR - Common Mode Rejection Ratio | 70 dB |
| Operating Supply Voltage | 3 V, 5 V |
概述
Description
The LM4673SD is a high-performance audio amplifier from Texas Instruments, designed for portable and compact applications. It features a Class D architecture, offering high efficiency while delivering powerful audio output. The device can drive speakers with low distortion, making it suitable for applications like smartphones, tablets, and portable speakers.
Key specifications include a wide supply voltage range, typically from 5V to 24V, and the capability to deliver up to 3W per channel into an 8-ohm load. The LM4673SD also integrates various protection features such as thermal shutdown and short-circuit protection, ensuring reliable operation in various conditions.
With its small package size, low quiescent current, and advanced audio performance, the LM4673SD is an ideal choice for designers looking to enhance audio output in space-constrained designs while maintaining high efficiency and sound quality.
Key specifications include a wide supply voltage range, typically from 5V to 24V, and the capability to deliver up to 3W per channel into an 8-ohm load. The LM4673SD also integrates various protection features such as thermal shutdown and short-circuit protection, ensuring reliable operation in various conditions.
With its small package size, low quiescent current, and advanced audio performance, the LM4673SD is an ideal choice for designers looking to enhance audio output in space-constrained designs while maintaining high efficiency and sound quality.
Equivalent
The LM4673SD is a low-power audio amplifier. Equivalent products include the Texas Instruments LM4863, LM4881, and the Maxim MAX9744. Other alternatives are the NXP TPA2005D1 and the Infineon IRS2092. Always verify specifications and parameters to ensure compatibility for your specific application.
Features
The LM4673SD is a high-performance audio amplifier designed for portable and battery-powered applications. Key features include:
1. Class D Amplification: Provides high efficiency, resulting in reduced power consumption and extended battery life.
2. Output Power: Delivers up to 2.6W per channel into a 4Ω load with a 5V supply, making it suitable for driving small speakers.
3. Low Distortion: Offers low total harmonic distortion (THD), ensuring high-quality audio playback.
4. Integrated Protection: Includes thermal shutdown and short-circuit protection to enhance reliability.
5. Compact Package: Available in a small surface-mount package, ideal for space-constrained designs.
6. Adjustable Gain: Allows for flexible circuit design and optimization of audio performance.
7. Filterless Operation: Eliminates the need for external output filters, simplifying the design and reducing component count.
These features make the LM4673SD an excellent choice for consumer audio applications, portable speakers, and other compact audio systems.
1. Class D Amplification: Provides high efficiency, resulting in reduced power consumption and extended battery life.
2. Output Power: Delivers up to 2.6W per channel into a 4Ω load with a 5V supply, making it suitable for driving small speakers.
3. Low Distortion: Offers low total harmonic distortion (THD), ensuring high-quality audio playback.
4. Integrated Protection: Includes thermal shutdown and short-circuit protection to enhance reliability.
5. Compact Package: Available in a small surface-mount package, ideal for space-constrained designs.
6. Adjustable Gain: Allows for flexible circuit design and optimization of audio performance.
7. Filterless Operation: Eliminates the need for external output filters, simplifying the design and reducing component count.
These features make the LM4673SD an excellent choice for consumer audio applications, portable speakers, and other compact audio systems.
Pinout
The LM4673SD is a low-power, high-performance audio amplifier with a pin count of 20. It is designed for driving speakers in portable audio applications.
Pin Functions:
1. Power Supply Pins: VDD (Power supply), VSS (Ground).
2. Input Pins: IN+ and IN- for differential audio input.
3. Output Pins: OUT+ and OUT- for speaker output.
4. Control Pins:
- SHDN (Shutdown mode)
- MUTE (Audio mute control)
5. Feedback Resistors: FB+ and FB- for setting gain.
6. Compensation Pins: COMP for stability and bandwidth adjustment.
7. Bypass Pins: Bypass capacitor connections for power supply filtering.
8. Thermal Protection: Thermal pad for heat dissipation.
9. Miscellaneous: Various pins for configuration and stability requirements.
The LM4673SD is suitable for applications requiring efficient audio amplification with minimal power consumption.
Pin Functions:
1. Power Supply Pins: VDD (Power supply), VSS (Ground).
2. Input Pins: IN+ and IN- for differential audio input.
3. Output Pins: OUT+ and OUT- for speaker output.
4. Control Pins:
- SHDN (Shutdown mode)
- MUTE (Audio mute control)
5. Feedback Resistors: FB+ and FB- for setting gain.
6. Compensation Pins: COMP for stability and bandwidth adjustment.
7. Bypass Pins: Bypass capacitor connections for power supply filtering.
8. Thermal Protection: Thermal pad for heat dissipation.
9. Miscellaneous: Various pins for configuration and stability requirements.
The LM4673SD is suitable for applications requiring efficient audio amplification with minimal power consumption.
Manufacturer
The LM4673SD is manufactured by Texas Instruments (TI), a leading American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is particularly well-known for its analog and embedded processing products, which are widely used in a range of applications, including industrial, automotive, consumer electronics, and communications equipment.
Texas Instruments is recognized for its innovation in the semiconductor industry and its commitment to advancing technology. The company’s products are pivotal in enabling the development of new technologies and improving existing ones across multiple sectors. TI operates globally, providing extensive support and resources for engineers and manufacturers, making it a key player in the electronics market.
Texas Instruments is recognized for its innovation in the semiconductor industry and its commitment to advancing technology. The company’s products are pivotal in enabling the development of new technologies and improving existing ones across multiple sectors. TI operates globally, providing extensive support and resources for engineers and manufacturers, making it a key player in the electronics market.
Application
The LM4673SD is a high-performance audio amplifier primarily used in portable devices, such as smartphones, tablets, and laptops. Its application areas include:
1. Portable Audio Systems: Enhancing sound quality in compact devices.
2. Consumer Electronics: Integration into TVs, gaming consoles, and home audio systems.
3. Automotive Audio: Improving audio systems in vehicles.
4. Wireless Speakers: Providing efficient amplification in battery-powered speakers.
5. DIY Audio Projects: Used by hobbyists for custom audio solutions.
Its low power consumption and compact size make it ideal for battery-operated applications.
1. Portable Audio Systems: Enhancing sound quality in compact devices.
2. Consumer Electronics: Integration into TVs, gaming consoles, and home audio systems.
3. Automotive Audio: Improving audio systems in vehicles.
4. Wireless Speakers: Providing efficient amplification in battery-powered speakers.
5. DIY Audio Projects: Used by hobbyists for custom audio solutions.
Its low power consumption and compact size make it ideal for battery-operated applications.
Package
The LM4673SD is packaged in a VQFN (Very Thin Quad Flat No-lead) format, specifically a 16-pin VQFN package. It features a compact, thermally efficient design suitable for space-constrained applications.
