LM4990MM/NOPB

The LM4990MM/NOPB is a high-performance audio power amplifier specifically designed for use in mobile phones and other portable communication devices. With the ability to deliver 1.25 watts of continuous average power to an 8Ω BTL load and 2 watts of continuous average power to a 4Ω BTL load, this amplifier ensures high-quality output with minimal distortion. Its capability to operate from a 5V DC power supply makes it ideal for low voltage applications where power consumption is a critical factor

主な特長

• Available in Space-Saving Packages: WSON, Exposed-DAP MSOP-PowerPAD, VSSOP, and DSBGA
• Ultra Low Current Shutdown Mode
• Improved Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
• 2.2 - 5.5V Operation
• No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
• Unity-Gain Stable
• External Gain Configuration Capability
• User Selectable Shutdown High or Low Logic Level

• Improved PSRR at 217Hz & 1KHz: 62dB
• Power Output at 5.0V, 1% THD+N,
  • 4Ω (NGZ and DGQ only): 2W (Typ)
• Power Output at 5.0V, 1% THD+N, 8Ω: 1.25W (Typ)
• Power Output at 3.0V, 1% THD+N, 4Ω: 600mW (Typ)
• Power Output at 3.0V, 1% THD+N, 8Ω: 425mW (Typ)
• Shutdown Current: 0.1µA (Typ)

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