1.1 Watt Audio Power Amplifier With Fade-in And Fade-out - National Semiconductor

The LM4897 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 1.1W of continuous average power to an 8 BTL load with less than 1% distortion (THD+N) from a +5VDC power supply. The LM4897 contains advanced pop and click circuitry that eliminate noises which would otherwise occur during turn-on and turn-off transitions. It also contains a fade-in/fade-out feature that eliminates unnatural sound generated by asserting/de-asserting the SHUTDOWN pin. The LM4897 is unity-gain stable and CAN be configured by external gain- setting resistors. The LM4897 features a low-power consumption global shut- down mode, which is achieved by driving the shutdown pin with Logic low. Additionally, the LM4897 features an internal thermal shutdown protection mechanism. Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4897 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary require- ments. By National Semiconductor Corporation
LM4897 's PackagesLM4897 's pdf datasheet
LM4897MM




LM4897 Pinout, Pinouts
LM4897 pinout,Pin out
This is one package pinout of LM4897,If you need more pinouts please download LM4897's pdf datasheet.

LM4897 Application circuits
LM4897 circuits
This is one application circuit of LM4897,If you need more circuits,please download LM4897's pdf datasheet.


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