LM48821TL/NOPB

Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Class AB
Output Type:	Headphones, 2-Channel (Stereo)
Max Output Power x Channels @ Load:	93mW x 1 @ 16 Ohm
Voltage - Supply:	2 V ~ 4 V
Features:	Depop, Differential Inputs, I²C, Mute, Shutdown, Volume Control
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	16-uSMD
Package / Case:	16-WFBGA
Base Part Number:	LM48821

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LM48821TL/NOPB Application Field and Working Principle

The LM48821TL/NOPB is a versatile, low-power, low-noise, zero-drift operational amplifier designed specifically for audio applications. It is a high-gain, low-level amplifier, which means that it amplifies small signals with very little noise. It is perfect for applications such as audio mixing, voice recognition, and noise cancellation.The LM48821TL/NOPB is a dual-channel, bipolar-input amplifier with a positive and negative rail of 3.3V and 1.65V, respectively. Its output impedance is 50 Ω, and its maximum output voltage is 7Vp-p. Its unity gain bandwidth is 2MHz, making it suitable for applications such as headphone amplifiers, audio filters, and high-pass filters. Its low-noise performance makes it an excellent choice for infrared receivers, microphone preamplifiers, and small signal conditioning systems.The LM48821TL/NOPB is a current-feedback type integrated circuit, which means that the output voltage is proportional to the current through the output. This allows the amplifier to have a wide bandwidth and low distortion. Additionally, the current feedback topology enables the amplifier to respond quickly to input signals, since the voltage gain is proportional to the current feedback loop. This makes the amplifier suitable for applications where fast transient response is required, such as audio mixers and active filters.The LM48821TL/NOPB is designed to provide high-fidelity audio amplification with minimal distortion. Its operating frequency range is from DC to 100kHz. It has a low-input bias current, which is necessary for high-fidelity amplification. It also has a low-input noise voltage, which means that the background noise level is reduced and distortion is minimized.The LM48821TL/NOPB also has a high input impedance, which is essential for accurate and efficient operation. This allows for better voltage transfer, as well as providing for effective shielding of the amplifier from external signals. It has a low output impedance, which ensures that the amplifier can provide sufficient output current for high-power applications.The LM48821TL/NOPB is also designed with advanced thermal protection and over current protection. These features ensure that the amplifier is protected from overloads and that it is able to dissipate heat more efficiently. The LM48821TL/NOPB also features built-in temperature sensors that can detect temperature variations and automatically adjust the output current as necessary.In conclusion, the LM48821TL/NOPB is a high-performance operational amplifier for audio applications. It offers low-noise performance, wide bandwidth, and a high input impedance. It also has advanced thermal and current protection capabilities. This makes it an ideal choice for applications such as audio mixers, active filters, and infrared receivers.

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