SG Micro Corp

SGM4915 Dual 145mW Headphone Amplifier with Active Low Shutdown Mode

GENERAL DESCRIPTION

The SGM4915 is a dual audio power amplifier capable of delivering 145mW per channel of continuous average power with less than 0.1% distortionTHDwhen 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 amplifierhas minimum of external components and can operate from a single 2.5V to 5.5V power supply.

SGM4915 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

SGM4915 does not require bootstrap capacitors or snubber networks. It is optimally suited for low-power portable systems.

For maximum flexibility, the SGM4915 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor).

The SGM4915 is available in Green TDFN-2×2-8L package. It operates over an ambient temperature range of -40 to +85.


PIN CONFIGURATIONS


FEATURES

• Active-Low Shutdown Mode
• 145mW into 16Ω Load from 5V Power Supply at
    THD+N = 0.1% Typical (per Channel)
• 85mW into 32Ω Load from 5V Power Supply at
    THD+N = 0.1% Typical (per Channel)
• Unity Gain Stable
• Shutdown Current: 0.02μA (TYP)
• 2.5V to 5.5V Operation
• Shutdown Pin is Compatible with 1.8V Logic
 Click and Pop Reduction Circuitry
• -40
 to +85 Operating Temperature Range
• Green TDFN-2×2-8L 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
SGM4915YDE8G/TR Production TDFN-2×2-8L 8 Y -40℃ to +85℃ Samples

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