LM4961LQ/NOPB
Product Overview
Category: Audio Amplifier
Use: The LM4961LQ/NOPB is a mono, bridge-tied load (BTL) audio power amplifier designed for use in portable electronic devices.
Characteristics: It features low quiescent current, low shutdown current, and minimal external component count.
Package: QFN-24
Essence: The LM4961LQ/NOPB is essential for providing high-quality audio amplification in compact, battery-powered devices.
Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.
Specifications
- Output Power: 1.1W at 3Ω and 5V
- Quiescent Current: 2.5mA
- Shutdown Current: 0.01μA
- Supply Voltage Range: 2.7V to 5.5V
- Total Harmonic Distortion + Noise (THD+N): 0.1% at 1kHz, 0.6W into 8Ω
- SNR: 95dB
Detailed Pin Configuration
The LM4961LQ/NOPB has a total of 24 pins, including VDD, GND, input, and output pins. For the detailed pin configuration, please refer to the datasheet provided by the manufacturer.
Functional Features
- Low Quiescent Current
- Shutdown Function
- Thermal Shutdown Protection
- Short-Circuit and Thermal Protection
- Unity-Gain Stable
Advantages and Disadvantages
Advantages: - Low power consumption - Small external component count - Thermal and short-circuit protection
Disadvantages: - Limited output power compared to some higher-power amplifiers - Requires careful PCB layout due to its high-frequency operation
Working Principles
The LM4961LQ/NOPB operates as a BTL amplifier, which allows it to drive small speakers directly without the need for an output coupling capacitor. It utilizes a low quiescent current and shutdown function to minimize power consumption when not in use.
Detailed Application Field Plans
The LM4961LQ/NOPB is suitable for various portable electronic devices such as smartphones, tablets, portable media players, and handheld gaming devices. Its low power consumption and small form factor make it ideal for applications where space and battery life are critical.
Detailed and Complete Alternative Models
- TPA2012D2 from Texas Instruments
- MAX98306 from Maxim Integrated
- NJU7089 from New Japan Radio
This completes the entry for LM4961LQ/NOPB according to the English editing encyclopedia structure format.
技術ソリューションにおける LM4961LQ/NOPB の適用に関連する 10 件の一般的な質問と回答をリストします。
What is the LM4961LQ/NOPB?
- The LM4961LQ/NOPB is a mono, bridge-tied load (BTL) audio power amplifier with integrated DC volume control.
What is the typical application of the LM4961LQ/NOPB?
- It is commonly used in portable audio devices, such as smartphones, tablets, and portable speakers, to drive a single speaker or transducer.
What is the maximum output power of the LM4961LQ/NOPB?
- The LM4961LQ/NOPB can deliver up to 1.6W of continuous average power into an 8Ω BTL load with less than 1% THD+N.
What is the supply voltage range for the LM4961LQ/NOPB?
- The LM4961LQ/NOPB operates from a single 2.5V to 5.5V supply, making it suitable for battery-powered applications.
Does the LM4961LQ/NOPB have thermal shutdown protection?
- Yes, the LM4961LQ/NOPB includes thermal shutdown protection to prevent damage from excessive heat.
Can the LM4961LQ/NOPB be used in stereo applications?
- No, the LM4961LQ/NOPB is designed for mono applications only.
What is the typical quiescent current of the LM4961LQ/NOPB?
- The typical quiescent current is 2.5mA, making it suitable for low-power applications.
Does the LM4961LQ/NOPB require external coupling capacitors?
- No, the LM4961LQ/NOPB does not require external coupling capacitors, which simplifies the design and reduces component count.
Is the LM4961LQ/NOPB compatible with digital volume control?
- Yes, the LM4961LQ/NOPB features an integrated DC volume control that can be controlled digitally.
What are the key features of the LM4961LQ/NOPB?
- Some key features include integrated DC volume control, low quiescent current, thermal shutdown protection, and compatibility with small, low-cost external components.