LM4811YD/NOPB

Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Class AB
Output Type:	Headphones, 2-Channel (Stereo)
Max Output Power x Channels @ Load:	105mW x 2 @ 16 Ohm
Voltage - Supply:	2 V ~ 5.5 V
Features:	Depop, Shutdown, Thermal Protection, Volume Control
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	10-WSON (3x3)
Package / Case:	10-VFDFN Exposed Pad
Base Part Number:	LM4811

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LM4811YD/NOPB Application Field and Working Principle

The LM4811YD/NOPB is an integrated audio amplifier designed for linear applications. It is designed to provide an excellent audio experience with low power consumption and small form factor. The LM4811YD/NOPB is ideal for applications where size and power are key factors.

Description

The LM4811YD/NOPB is a linear operational amplifier with a wide range of audio applications. It can be used to provide an amplifier with low power consumption, high performance, and high efficiency. The device includes an integrated amplifier with a high gain, lowCurrent draw and low offset voltage. It incorporates an overload protection circuit and can be driven by a wide range of audio frequency signals. The LM4811YD/NOPB is designed to provide an excellent audio experience with low power consumption and small form factor. It has an open loop gain of 50,000 to 1 and can be powered by a supply voltage of +5V DC. The maximum output voltage swing is +4V and the output can be steered to various audio outputs like lineout, a headset, a headphone, or a speaker.

Features & Benefits

The LM4811YD/NOPB has many features that make it beneficial to many audio applications. Key features include:

• Low power consumption
• High gain amplifiers
• Low offset voltage
• Operating temperature range up to 70°C
• Low noise
• Wide audio frequency range
• Integrated overload protection circuit

The LM4811YD/NOPB\'s low power consumption is one of its major advantages. It consumes significantly less power than other audio amplifiers and reduces the overall system cost. Its high gain amplifiers provide excellent signal to noise ratio for a cleaner sound output. Its low offset voltage also adds to its low noise performance. The wide audio frequency range of the LM4811YD/NOPB is also beneficial for multimedia applications. It can support audio frequencies of up to 88 kHz and can easily be used in high fidelity systems. The device can also provide high efficiency performance with less distortion.

Applications

The LM4811YD/NOPB has multiple applications, including:

• Headsets
• Headphones
• Multimedia systems
• Speakers
• Lineout units

The LM4811YD/NOPB can also be used in portable audio applications as it requires low power consumption. It is easy to implement and can be used in low power handheld units as well.

Working Principle

The LM4811YD/NOPB works on the principle of a differential amplifier. It is composed of two transistors, the input transistor and the output transistor. The input transistor amplifies the incoming signal and the output transistor converts it into the desired output voltage. The two transistors are connected in a differential configuration with two diodes connected between the collector and base of each transistor. The diodes act as current-limiting resistors which ensure the transistors are not affected by large signals. The overdrain protection circuit also limits the output current to prevent any damage due to overloads. The LM4811YD/NOPB uses the same principle as a differential amplifier, but it is optimized for audio applications. It provides excellent audio performance by maintaining a high gain factor, providing a low output offset voltage and low power consumption.

Conclusion

The LM4811YD/NOPB is an integrated audio amplifier designed for linear applications. It can provide excellent audio performance with low power consumption and a small form factor. Its features include high gain amplifiers, low offset voltage, and wide audio frequency range. It is ideal for applications where size and power are key factors.

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