LM4951TL/NOPB
Product Overview
Category
LM4951TL/NOPB belongs to the category of audio power amplifiers.
Use
It is used to amplify audio signals in various electronic devices such as mobile phones, tablets, portable media players, and other consumer electronics.
Characteristics
- High efficiency
- Low quiescent current
- Thermal shutdown protection
- Short-circuit and thermal overload protection
Package
The LM4951TL/NOPB comes in a small outline package (SOP) with 14 pins.
Essence
The essence of LM4951TL/NOPB lies in its ability to provide high-quality audio amplification in a compact and efficient package.
Packaging/Quantity
The LM4951TL/NOPB is typically packaged in reels with a quantity of 2500 units per reel.
Specifications
- Operating Voltage: 2.7V to 5.5V
- Output Power: 1.4W at 3.6V, 10% THD+N into 8Ω
- Quiescent Current: 4mA
- Shutdown Current: <1µA
- Package Type: SOP-14
Detailed Pin Configuration
- SHUTDOWN
- BYPASS
- GAIN
- VDD
- OUT-
- OUT+
- GND
- GND
- GND
- GND
- GND
- GND
- GND
- VSS
Functional Features
- Shutdown mode for power saving
- Bypass pin for direct input connection
- Adjustable gain control
- Differential inputs for noise rejection
Advantages and Disadvantages
Advantages
- High efficiency and low quiescent current
- Thermal shutdown and overload protection
- Small form factor and easy to integrate
Disadvantages
- Limited output power compared to higher wattage amplifiers
- Requires external components for full functionality
Working Principles
The LM4951TL/NOPB operates by amplifying the input audio signal using an internal amplifier circuit. It utilizes differential inputs for improved noise rejection and provides thermal and short-circuit protection to ensure reliable operation.
Detailed Application Field Plans
The LM4951TL/NOPB is well-suited for use in portable electronic devices where space and power efficiency are crucial. Its application fields include: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Wearable devices
Detailed and Complete Alternative Models
Some alternative models to LM4951TL/NOPB include: - TPA2012D2 from Texas Instruments - MAX98306 from Maxim Integrated - PAM8403 from Diodes Incorporated
In conclusion, the LM4951TL/NOPB is a versatile audio power amplifier suitable for a wide range of portable electronic devices, offering high efficiency and reliable performance in a compact package.
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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LM4951TL/NOPB i tekniska lösningar
What is the LM4951TL/NOPB?
- The LM4951TL/NOPB is a mono, bridge-tied load (BTL) audio power amplifier with DC volume control.
What is the typical application of the LM4951TL/NOPB?
- The LM4951TL/NOPB is commonly used in portable audio devices, such as smartphones, tablets, and portable speakers.
What is the maximum output power of the LM4951TL/NOPB?
- The LM4951TL/NOPB can deliver up to 1.1W of continuous average power into an 8Ω BTL load with 1% THD+N.
What is the supply voltage range for the LM4951TL/NOPB?
- The LM4951TL/NOPB operates from a single 2.7V to 5.5V supply.
Does the LM4951TL/NOPB require external coupling capacitors?
- No, the LM4951TL/NOPB does not require external coupling capacitors, which simplifies the design and reduces component count.
What is the typical quiescent current of the LM4951TL/NOPB?
- The typical quiescent current of the LM4951TL/NOPB is 2.5mA at a 3.6V supply.
Can the LM4951TL/NOPB operate in shutdown mode?
- Yes, the LM4951TL/NOPB features a low-power consumption shutdown mode, which is activated by pulling the SD pin low.
What is the recommended layout for the LM4951TL/NOPB?
- A proper layout with adequate ground and power traces, as well as proper decoupling capacitors, is essential for optimal performance.
What are the key features of the LM4951TL/NOPB?
- The LM4951TL/NOPB features a low-noise floor, click-and-pop suppression, and thermal shutdown protection, among other features.
Is there a reference design available for the LM4951TL/NOPB?
- Yes, Texas Instruments provides a reference design and application notes to assist with the implementation of the LM4951TL/NOPB in technical solutions.