Datasheet LM4664ITL - National Semiconductor AMP, FILTERLESS CLASS-D 1.1 W, 4664 — Ficha de datos

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Manufacturer: National Semiconductor

Description: AMP, FILTERLESS CLASS-D 1.1 W, 4664

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Docket:
LM4664 Filterless High Efficiency 1.1W Switching Audio Amplifier
March 2004
LM4664 Filterless High Efficiency 1.1W Switching Audio Amplifier
General Description
The LM4664 is a fully integrated single-supply high efficiency switching audio amplifier.

It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces parts count, simplifies circuit design, and reduces board area. The LM4664 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators. The LM4664 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 3V supply, it is capable of driving 8 transducer loads at a continuous average output of 425mW with less than 1%THD+N. Its flexible power supply requirements allow operation from 2.7V to 5.5V. The LM4664 has high efficiency with an 8 transducer l

Specifications:

• Amplifier Type: Power
• Base Number: 4664
• IC Generic Number: 4664
• Load Impedance Min: 8 Ohm
• Mounting Type: SMD
• Number of Amplifiers: 1
• Number of Channels: 1
• Number of Pins: 9
• Operating Temperature Range: -40°C to +85°C
• Output Power: 1.1 W
• Package / Case: Bump Micro SMD
• Power Rating RMS: 1.1 W
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage + Nom: 6 V
• Supply Voltage Range: 2.7 V to 5.5 V

RoHS: Yes