1 Watt Audio Power Amplifier - National Semiconductor

The LM4890 is an Audio Power Amplifier primarily designed for demanding applications in mobile phones and other por- table Communication device applications. It is capable of delivering 1 watt of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4890 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage appli- cations where minimal power consumption is a primary re- quirement. The LM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with Logic low. Additionally, the LM4890 features an internal ther- mal shutdown protection mechanism. The LM4890 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions. The LM4890 is unity-gain stable and CAN be configured by external gain-setting resistors. By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM4890M/NOPB Texas Instruments 1 Watt Audio Power Amplifier 8-SOIC -40 to 85
LM4890MM/NOPB Texas Instruments 1 Watt Audio Power Amplifier 8-VSSOP -40 to 85
LM4890LDX/NOPB Texas Instruments 1 Watt Audio Power Amplifier 10-WSON -40 to 85
LM4890MMX/NOPB Texas Instruments 1 Watt Audio Power Amplifier 8-VSSOP -40 to 85
LM4890MX/NOPB Texas Instruments 1 Watt Audio Power Amplifier 8-SOIC -40 to 85
LM4890 's PackagesLM4890 's pdf datasheet
LM4890IBP
LM4890IBPX
LM4890IBL
LM4890IBLX
LM4890LD
LM4890MM
LM4890M
LM4890ITL
LM4890ITLX




LM4890 Pinout, Pinouts
LM4890 pinout,Pin out
This is one package pinout of LM4890,If you need more pinouts please download LM4890's pdf datasheet.

LM4890 Application circuits
LM4890 circuits
This is one application circuit of LM4890,If you need more circuits,please download LM4890's pdf datasheet.


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