LM4894ITLX

LM4894ITLX Description

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LM4894ITLX Datasheet (PDF)

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LM4894ITLX Features

• Fully differential amplification
• Available in space-saving packages micro SMD, MSOP, and LLP
• Ultra low current shutdown mode
• Can drive capacitive loads up to 500pF
• 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
• Unity-gain stable
• External gain configuration capability
• Shutdown high or low selectivity
• High CMRR

LM4894ITLX Description

The LM4894 is a fully differential 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 8 BTL load with less than 1% distortion (THD+N) from a 5V_DC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4894 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM4894 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown select pin to be driven in a likewise manner to enable Shutdown. Additionally, the LM4894 features an internal thermal shutdown protection mechanism.

The LM4894 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4894 is unity-gain stable and can be configured by external gain-setting resistors.

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