LM4831

Supply Voltage ..................................................6.0V
Storage Temperature.................. −65°C to 150°C
Input Voltage.......................... −0.3V to VDD +0.3V
Power Dissipation (Note 3) ...........Internally limited
ESD Susceptibility (Note 4) ............................2500V
ESD Susceptibility (Note 5) ..............................200V
Junction Temperature ..................................150°C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.) ...................................215°C
Infrared (15 sec.).......................................... 220°C
See AN-450 "Surface Mounting and their Effects on
Product Reliability"  for other methods of soldering
surface mount devices.
Thermal Resistance
qJC (typ) .......................................................15°C/W
qJA (typ) .......................................................62°C/W


Description

The LM4831 is a monolithic integrated circuit that provides a stereo three input mixer, two stereo input analog multiplexer, a stereo line out and a dual 1W bridged audio power amplifier. In addition, a low noise microphone preamp is included on-chip. The LM4831 is ideal for multimedia computers since it incorporates an input mixer, analog multiplexer, and configurable stereo audio power amplifier, as well as a microphone preamp stage. This combination allows for all of the analog audio processing to be enclosed in a 44-pin TQFP package.

The LM4831 features an externally controlled, low-power consumption shutdown mode, as well as both headphone and docking station modes. To temporarily override the shutdown mode and allow audio signals to be amplified, the LM4831 provides four "beep" pins.