1 Watt Audio Power Amplifier With Headphone Sense - National Semiconductor

The LM4892 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. Switching between bridged speaker mode and Headphone (single-ended) mode is accomplished using the Headphone sense pin. Boomer Audio Power Amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. The LM4892 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 LM4892 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with Logic low. Additionally, the LM4892 features an internal ther- mal shutdown protection mechanism. The LM4892 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions. The LM4892 is unity-gain stable and CAN be configured by external gain-setting resistors. By National Semiconductor Corporation
LM4892 's PackagesLM4892 's pdf datasheet
LM4892IBP
LM4892IBPX
LM4892M
LM4892MM
LM4892LD




LM4892 Pinout, Pinouts
LM4892 pinout,Pin out
This is one package pinout of LM4892,If you need more pinouts please download LM4892's pdf datasheet.

LM4892 Application circuits
LM4892 circuits
This is one application circuit of LM4892,If you need more circuits,please download LM4892's pdf datasheet.


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