HomedatasheetLM4890LD

LM4890LD Datasheet

Boomer? Audio Power Amplifier Series 1 Watt Audio Power Amplifier
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Description

General Description
The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC
power supply.

Key Specifications
PSRR at 217Hz, VDD = 5V (Fig. 1) 62dB(typ.)
Power Output at 5.0V & 1% THD 1W(typ.)
Power Output at 3.3V & 1% THD 400mW(typ.)
Shutdown Current 0.1µA(typ.)

Features
Available in space-saving packages: micro SMD, MSOP, SOIC, and LLP
Ultra low current shutdown mode
BTL output can drive capacitive loads
Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
2.2 - 5.5V operation
No output coupling capacitors, snubber networks or bootstrap capacitors required
Thermal shutdown protection
Unity-gain stable
External gain configuration capability

Applications
Mobile Phones
PDAs
Portable electronic devices

Features

Parameters

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Manufacturer information

NATIONAL ->TEXAS INSTRUMENTS
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