LM49200TLEVAL

LM49200, LM49200TLEVAL www.ti.com SNAS459A – MAY 2009 – REVISED APRIL 2013 LM49200 Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier Check for Samples: LM49200, LM49200TLEVAL 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 SPECIFICATIONS Supply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5V I2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5V Output power at VDD = 5V, 1% THD+N – RL = 8Ω speaker: 1.25W (typ) – RL = 32Ω headphone: 38mW (typ) Output power at VDD = 3.3V, 1% THD+N – RL = 8Ω speaker: 520W (typ) – RL = 32Ω headphone: 38mW (typ) PSRR: – VDD = 3.3V, 217Hz ripple, Mono In: 95dB (typ) Shutdown power supply current 0.02μA (typ) APPLICATIONS Portable Electronic Devices Mobile Phones PDAs DESCRIPTION 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 ...