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          帕智電子(上海)有限公司

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          SGM4888

          Dual 2.1W Audio Power Amplifier Plus Stereo Headphone & 3D Enhancement
           
          Dual 2.1W Audio Power Amplifier Plus Stereo Headphone & 3D Enhancement
          GENERAL DESCRIPTION

          The SGM4888 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W into a 4Ω load or 2.5W into a 3Ω load with typically 1% THD+N.

          The SGM4888 has two separate HP (headphone) enable inputs, each having different logic level thresholds. Either HP enable input activates the single-ended headphone mode and disables the BTL output mode. The HP Sense input is for use with a normal stereo headphone jack. The remaining input, HP Logic, accepts standard logic level thresholds.

          To simplify audio system design, the SGM4888 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

          The SGM4888 features a low power consumption shutdown mode and thermal shutdown protection. It also utilizes circuitry to reduce “pop/click” during device turn-on.

          The SGM4888 is available in a Green TQFN-4×4-24L package. It operates over an ambient temperature range of -40 to +85.

          PIN CONFIGURATIONS

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          FEATURES
          • PO at 1% THD+N, VCC = 5V

             RL = 3Ω 2.5W (TYP)

             RL = 4Ω 2.1W (TYP)

             RL = 8Ω 1.3W (TYP)

          • Low Shutdown Current 0.02μA

          • Operation Supply Voltage 2.8V to 5.5V

          • PSRR at 217Hz 80dB (TYP)

          • 3D Enhancement

          • Selectable Headphone Enable Modes

          • Stereo Headphone Amplifier Mode

          • Improved “Pop/Click” Suppression Circuitry

          • Thermal Shutdown Protection Circuitry

          • -40 to +85 Operating Temperature Range

          • Available in a Green TQFN-4×4-24L Package

          APPLICATIONS

          Cell Phones, PDAs, MP4s, PMPs

          Portable and Desktop Computers

          Desktops Audio System

          Multimedia Monitors

          ORDERING INFORMATION
          Part NumberStatusPackagePinsPb-FreeTemp Range
          SGM4888YTQF24G/TRProductionTQFN-4×4-24L24Y-40℃ to +85℃

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