LM49200 - Texas Instruments

LM49200 Stereo Class AB Audio Subsystem

The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω. The LM49200 has three input channels. A pair of single-ended input.

Features

1
•2 Differential Mono Input and Stereo SingleEnded Input
• 32-Step Digital Volume Control (-80 to +18dB)
• Three Independent Volume Channels (Left, Right, Mono)
• Separate Headphone Volume Control
• Flexible Output for Speaker and Headphone Output
• True Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and Cost
• Receiver Pass-Through Capability
• Soft Enable Function
• RF Immunity Topology
• “Click and Pop” Suppression Circuitry
• Thermal Shutdown Protection
• Micro-Power Shutdown
• I2C Control Interface
• Available in Space-Saving DSBGA Package KEY SPECI.