LME49600TSBD Datasheet PDF - TI

●Overview

●The LME49600 is a high performance, low distortion high fidelity 250mA audio buffer. Whereas there are many uses for the LME49600, this application report describes a headphone amplifier circuit and associated demonstration board. Designed for use inside an operational amplifier’s feedback loop, it increases output current, improves capacitive load drive, and eliminates thermal feedback.

●The LME49600 offers a pin-selectable bandwidth: a low current, 110MHz bandwidth mode that consumes 8mA and a wide 180 MHz bandwidth mode that consumes 15mA. In both modes the LME49600 has a nominal 2000V/μs slew rate. Bandwidth is easily adjusted by either leaving the BW pin unconnected, connecting a resistor between the BW pin and the VEE pin or connecting the BW pin directly to the VEE pin.

●The LME49600 is fully protected through internal current limit and thermal shutdown.

●To help the user investigate and evaluate the LME49600"s performance and capabilities, a fully populated demonstration board was created. Please contact the Audio Products Group for availability. This board is shown in Figure 1. Connected to an external power supply (±2.5V to ±17V) and a signal source. The LME49600 demonstration board easily demonstrates the amplifier"s features.