SG Micro Corp

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


PIN CONFIGURATIONS


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 Green TQFN-4×4-24L Package

APPLICATIONS

Cell Phones, PDAs, MP4s, PMPs
Portable and Desktop Computers
Desktops Audio System
Multimedia Monitors


ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM4888YTQF24G/TR Production TQFN-4×4-24L 24 Y -40℃ to +85℃ Samples

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