LM4890ITL/NOPB

Product Overview

Category:

LM4890ITL/NOPB belongs to the category of audio power amplifiers.

Use:

It is used to amplify audio signals and drive speakers in various electronic devices such as mobile phones, tablets, and portable media players.

Characteristics:

LM4890ITL/NOPB is known for its high efficiency, low distortion, and compact size. It is designed to deliver high-quality audio output while consuming minimal power.

Package:

The LM4890ITL/NOPB comes in a small outline package (SOP) which makes it suitable for space-constrained applications.

Essence:

The essence of LM4890ITL/NOPB lies in its ability to provide clear and powerful audio amplification in a compact form factor.

Packaging/Quantity:

It is typically available in reels with a quantity of 2500 units per reel.

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: 1.1W at 5V, 10% THD+N, 8Ω Load
• Shutdown Current: 0.6μA (typical)
• Total Harmonic Distortion + Noise (THD+N): 0.2% (typical)

Detailed Pin Configuration

The LM4890ITL/NOPB has a total of 14 pins. The detailed pin configuration is as follows: 1. Shutdown (SD) 2. Input Bypass (INBYP) 3. Input Signal (IN+) 4. Input Signal (IN-) 5. Gain Select (GAIN) 6. Bypass Capacitor (CBYP) 7. Output (OUT+) 8. Output (OUT-) 9. Bootstrap (BST) 10. Ground (GND) 11. VDD 12. Gain Select (GAIN) 13. Gain Select (GAIN) 14. Shutdown (SD)

Functional Features

• Low Quiescent Current: Ensures minimal power consumption when the amplifier is idle.
• Short-Circuit and Thermal Protection: Safeguards the amplifier and connected components from damage in case of faults.
• Integrated Gain Select Control: Allows for flexibility in adjusting the gain according to the application's requirements.

Advantages and Disadvantages

Advantages

• Compact size
• High efficiency
• Low distortion
• Integrated protection features

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Not suitable for high-power audio applications

Working Principles

The LM4890ITL/NOPB operates by amplifying the input audio signal using an internal class AB amplifier architecture. When an audio signal is applied to the input, the amplifier processes and amplifies it to drive the connected speaker or load.

Detailed Application Field Plans

LM4890ITL/NOPB is well-suited for use in portable electronic devices such as: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Wearable audio devices

Detailed and Complete Alternative Models

Some alternative models to LM4890ITL/NOPB include: - LM4863: A similar audio power amplifier with higher output power capabilities. - TPA2012: An audio amplifier with integrated boost converter for higher efficiency.

In conclusion, LM4890ITL/NOPB offers a compact and efficient solution for audio amplification in portable electronic devices, with its low power consumption and integrated protection features making it a popular choice for various applications.

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