LM4889ITLX/NOPB

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Part Status:	Obsolete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:	8-uSMD
Package / Case:	8-WFBGA
Base Part Number:	LM4889

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Introduction

The LM4889ITLX/NOPB is a two-channel and high-fidelity-class digital audio amplifier powered by Texas Instrument\'s power supply and integrated with a resistive thermal acoustic transducer (RTAT) as a built-in digital-to-analog converter. It is designed to meet the needs of increasingly demanding audio applications which require painless installation and a low power consumption. The LM4889ITLX/NOPB offers an excellent solution for mobile audio applications, personal mobile devices, hand-held radios and direct broadcast systems, as well as other digital audio applications which require high fidelity sound.

General Description

The LM4889ITLX/NOPB is a two-channel, high-fidelity-class amplifier with balanced differential inputs. The amplifier delivers high-end performance, often exceeding that of the best analog and digital amplifiers, while maintaining a low power consumption of 10 watts. The device features a high output power capability, with a maximum power output of 2x 15 watts into a 4 ohm. The amplifier has a high efficiency of 90%, ensuring low power consumption and a reliable, long lasting performance. The LM4889ITLX/NOPB also features a low distortion rating, with a THD+N of 0.01%.

Application Fields and Working Principle

The LM4889ITLX/NOPB is designed for use in various digital audio applications, such as mobile audio applications, personal mobile devices, hand-held radios, consumer electronics and direct broadcast systems. The built-in RTAT provides a digital-to-analog conversion for digital audio applications, allowing for a direct interface from digital to analog audio. The device also features low power consumption, low distortion and low noise outputs, making it a particularly attractive solution for the most demanding audio application requirements.The LM4889ITLX/NOPB utilizes the Texas Instruments power supply to produce the high fidelity performance, while maintaining a low power consumption. The power supply leverages the latest Class-f MOSFETs and switching technology, combined with an advanced control loop, to achieve an outstanding power efficiency of up to 90%. The amplifier is also equipped with a bypass mode, allowing the amplifier to be used with traditional power supply designs and always maintains high levels of linearity.

Conclusion

The LM4889ITLX/NOPB from Texas Instruments is a high quality digital audio amplifier designed for various audio applications. The device is equipped with a RTAT that allows a direct digital-to-analog conversion for digital audio applications, ensuring accurate and high fidelity sound. The LM4889ITLX/NOPB also features a low power consumption, low distortion and low noise outputs, making it particularly attractive for the most demanding audio applications. The amplifier utilizes the latest Class-f MOSFETs and switching technology to achieve extremely high efficiencies and low distortion, making it a great solution for various audio applications.

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