LM4891LDX

Series:	Boomer®
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Class AB
Output Type:	1-Channel (Mono)
Max Output Power x Channels @ Load:	1W x 1 @ 8 Ohm
Voltage - Supply:	2.2 V ~ 5.5 V
Features:	Depop, Shutdown, Thermal Protection
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Supplier Device Package:	10-WSON (3x4)
Package / Case:	10-WFDFN Exposed Pad
Base Part Number:	LM4891

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LM4891LDX is a high performance dual channel audio amplifier. It is designed to meet the requirements for efficient and reliable audio systems. It is suitable for both professional and consumer applications. The LM4891LDX is a linear, two-channel amplifier with a wide power range up to 21W RMS per channel. The primary function of this amplifier is to provide an efficient, low distortion, audio signal to drive speakers. It has a gain of 40dB and a maximum output power of 21W RMS. It also has high input impedance, low thermal drift, low noise, and fast start up time.The LM4891LDX utilizes a bipolar input stage, a complimentary metal oxide semiconductor (CMOS) emitter-follower output stage, and an audio preamplifier to provide reliable high-fidelity sound reproduction. On the input side, the bipolar input stage provides bipolar symmetry, low bias drift, and low noise. On the output side, the complimentary metal oxide semiconductor (CMOS) emitter-follower output stage is used to provide an efficient path and low distortion. The audio preamplifier is designed to provide reliable, high-fidelity sound reproduction by increasing the gain and providing low distortion.Additionally, the LM4891LDX comes with a constant current source (CCS) output protection circuit. This circuit is designed to protect against over-current conditions and short circuits. The CCS provides a regulated current and eliminates the need for additional output current protection components.The LM4891LDX is suitable for many audio applications, including portable audio products, car audio systems, and consumer audio products. It is especially suited for use in portable audio products such as portable speakers and headphones, as its low-power capabilities allow for more efficient operation. The LM4891LDX can also be used in car audio systems, as it is capable of delivering high-fidelity sound with no distortion.Overall, the LM4891LDX is a high performance, low distortion, audio amplifier designed for use in audio applications. Its wide power range, low thermal drift, and low noise make it suitable for use in both professional and consumer audio systems. Its protection circuit helps to protect the amplifier from over-current conditions and short circuits. With its vast array of features, this amplifier is an ideal choice for use in today\'s audio systems.

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