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LM4953 Datasheet Ground-Referenced Ultra Low Noise / Ceramic Speaker Driver

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The LM4953 is an audio power amplifier designed for driving Ceramic Speaker in portable applications.

When powered by a 3.6V supply, it is capable of forcing 12.6Vpp across a 2µF + 30Ω bridge-tied-load (BTL) with less than 1% THD+N.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components.

Overview

September 2005 www.DataSheet4U.com LM4953 Ground-Referenced, Ultra Low Noise, Ceramic Speaker Driver LM4953 Ground-Referenced, Ultra Low Noise, Ceramic Speaker.

Key Features

  • a low-power consumption shutdown mode. Additionally, the LM4953 features an internal thermal shutdown protection mechanism. The LM4953 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4953 is unity-gain stable and can be configured by external gain-setting resistors. Key Specifications j Quiescent Power Supply Current (Vdd = 3V) 7mA(typ) j BTL Voltage Swing (2µF+30Ω load, 1% THD+N, Vdd = 3.6V) j Shutdown C.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LM4950 7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier
LM4951 Wide Voltage Range 1.8 Watt Audio Amplifier
LM4951A Wide Voltage Range 1.8 Watt Audio Amplifier
LM4952 3.1W Stereo-SE Audio Power Amplifier
LM4954 HIgh Voltage 3 Watt Audio Power Amplifier
LM4900 265mW at 3.3V Supply Audio Power Amplifier
LM4901 1.6 Watt Audio Power Amplifier
LM4902 265mW at 3.3V Supply Audio Power Amplifier
LM4903 1 Watt Audio Power Amplifier
LM4904 1 Watt Audio Power Amplifier