Part LM49101
Description Mono Class AB Audio Subsystem
Manufacturer National Semiconductor
Size 867.89 KB
National Semiconductor
LM49101

Overview

The LM49101 is a fully integrated audio subsystem with a mono power amplifier capable of delivering 540mW of continuous average power into an 8Ω BTL speaker load with 1% THD+N using a 3.3V supply. The LM49101 includes a separate stereo headphone amplifier that can deliver 44mW per channel into 32Ω loads using a 2.75V supply.

  • Output Power VDDLS = 3.3V, VDDHP = 2.75V 1% THD+N RL = 8Ω speaker RL = 32Ω headphone 540W (typ) 40mW (typ)
  • PSRR: VDD = 3.3V, 217Hz ripple, Mono In
  • Shutdown power supply current 90dB (typ) 0.01μA (typ) Features * * * * * * * * * * * * * *
  • Differential mono input and stereo single-ended input Separate earpiece (receiver) differential input Analog switch for a separate earpiece path 32-step digital vol