Datasheet LM4663MT - National Semiconductor AMP STEREO CLASS D 2 W, SMD, 4663 — Ficha de datos

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Manufacturer: National Semiconductor

Description: AMP STEREO CLASS D 2 W, SMD, 4663

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Docket:
LM4663 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier
May 2000
LM4663 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier
General Description
The LM4663 is a fully integrated single supply, high efficiency Class D audio power amplifier solution.

The LM4663 utilizes a continuous time delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators. The LM4663 also features a stereo headphone amplifier that delivers 80mW into a 32 headset with less than 0.5% THD. The LM4663 has two stereo inputs that can be selected to drive either the headphone amplifier or the Class D amplifier. All amplifiers are protected with thermal shutdown. In standby mode, the LM4663 draws an extremely low 2µA supply current. With a 4 load, the IC's efficiency for a 250mW power level is 69%, reaching 83% at a power level of 2W. The IC features click and pop reduction circuitry that minimizes audible poppi

Specifications:

• Amplifier Type: Power
• Bandwidth: 18 kHz
• Base Number: 4663
• IC Generic Number: 4663
• Logic Function Number: 4663
• Mounting Type: SMD
• Number of Amplifiers: 2
• Number of Pins: 24
• Operating Temperature Range: -40°C to +85°C
• Output Power: 2.0 kW
• Package / Case: TSSOP
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage + Nom: 5 V