PR4946SQ

• I 2 C/SPI control interface
• I 2 C/SPI programmable 3D sound effects
• I 2 Digital volume control with 32 steps of C/SPI control (54 dB to +18 dB)
• Three independent volume channels (left, right, mono)
• Eight different output modes
• LLP and microSMD surface mount packaging
• "Click" sound suppression circuit
• Thermal shutdown protection
• Low shutdown current (0.02uA,typical)
• RF anti-interference topology

illustrate

The LM4946 is an audio power amplifier capable of delivering 540mW continuous average power with a mono 8Ω bridged load (BTL) at 1% THD+N, a continuous average power per channel with a stereo 32Ω single-ended (SE) load of 35MW of audio power amplifier with 1% THD+N, or an output capacitor (OCL) in the same specification SE configuration from a 3.3V supply.

The LM4946 has three input channels: a pair of two-channel stereo signals and a third differential mono mono input. The LM4946 features a 32-step digital volume control and 8 different output modes. Digital volume control, 3D enhancement, and output mode (mono/SE/Octopus card company) are programming, I go through a double wire 2 C or three-wire SPI compatible interfaces, allowing flexibility in routing and mixing audio channels.

The LM4946 is designed for mobile phones, PDAs and other portable handheld applications. It provides high-quality output power from a surface-mount package and requires only seven external components (two add-ons in SE mode) in Octopus Card Company mode.

Key specifications:

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• mobile phone
• handheld computer