LME49830 Datasheet | National Semiconductor

Description The LME49830 is a high fidelity audio power amplifier input stage designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of output devices. The LME49830 is capable of driving an output stage in excess of 300 W single-ended into an 8Ω load in the presence of 10% high line headroom and 20% supply regulation. The LME49830 includes internal thermal shut down circuitry that activates when the LME49830 die temperature exceeds 150°C. The LME49830 has a mute function that mutes the input drive signal and forces the amplifier output to a quiescent state. The LME49830 has high drive current, 56m A typical, and high output voltage swing for maximum flexibility in output stage choice. With a bias voltage range up to 16V the LME49830 can be used to drive MOSFET output stages using a wide selection of MOSFETs. The LME49830 has a wide operating supply range of ±20V to ±100V, which allows lower cost, unregulated power supplies to be used. Key Specifications -  Wide operating Voltage range -  Output Voltage Noise   (BW = 30k Hz) -  PSRR (DC) -  Slew Rate -  THD+N (f = 1k Hz) ±20V to ±100V 44μV (typ) 105d B (typ) 39V/μs (typ) 0.0006% (typ) Features - High output current and voltage for use with MOSFET - - - - - - output stages Very high voltage range: ±20V - ±100V Scalable output power Minimum external ponents External pensation Thermal shutdown of input stage Mute control Applications - - - - AV receivers Audiophile power amps Pro Audio High voltage industrial applications Overture® is a registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation .national. Typical Application .. FIGURE 1. Typical Audio Amplifier Application Circuit .national. Connection Diagram Plastic Package (Note 8) .. Top View Order Number LME49830TB See NS Package Number TB15A N = National logo U = Fabrication plant...