SG Micro Corp

SGM4810 Dual 158mW Headphone Amplifier with Active High Shutdown Mode

GENERAL DESCRIPTION

The SGM4810 is a dual audio power amplifier capable of delivering 158mW per channel of continuous average power with typically 0.1% distortion (THD+N) when it drives a 16Ω speaker from a 5.0V power supply. It is designed to maximize audio performance in portable applications such as mobile phone. The portable application requires audio power amplifier has minimum of external components and can operate from a single 2.5V to 5.5V power supply.

SGM4810 features an externally controlled, active-high, micro-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

The SGM4810 does not require bootstrap capacitorsor snubber networks. It is optimally suited for low power portable systems.

For maximum flexibility, the SGM4810 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor).

The SGM4810 is available in Green MSOP-8 package. It operates over an ambient temperature range of -40 to +85.


PIN CONFIGURATIONS


FEATURES

• Active-High Shutdown Mode
• 158mW into 16Ω Load from 5V Power Supply at
    THD+N = 0.1% (Typical, per Channel)
• 87mW into 32Ω Load from 5V Power Supply at
    THD+N = 0.1% (Typical, per Channel)
• Unity Gain Stable
• 2.5V to 5.5V Operation
• Shutdown Pin is Compatible with 1.8V Logic
• Shutdown Current: 0.5μA (TYP)
• Pop/Click Reduction Circuitry
• -40 to +85 Operating Temperature Range
• Available in Green MSOP-8 Package

APPLICATIONS

Portable Systems

Headphone Amplifier
Microphone Preamplifier
Notebook Computers
Mobile Phone
PDAs
GPS


ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM4810YMS/TR Production MSOP-8 8 Y -40℃ to +85℃ Samples

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