LM4753 Datasheet | National Semiconductor

Description The LM4753 is a stereo audio amplifier capable of delivering 10W/channel at 10% distortion into a 8Ω load. The power amp has an internally set gain of 30 d B. A 0V- 5V DC controlled volume block provides 80 d B of attenuation from input to line-out. Line outputs are available after the volume control for signal routing. The amplifier has a smooth transition fade-in/out mute and a power conserving standby function which are controlled through TTL or CMOS logic. Both functions provide over 75 d B of attenuation. The LM4753 maintains an excellent Signal-to-Noise ratio of greater than 70 d B with a low noise floor less than 2 m V. The IC also maintains above 50 d B of channel separation. The LM4753 is available in a 15-lead non-isolated plastic package and is designed for use in TV applications requiring single supply operation. Key Specifications n n n n n n n Output power into 8Ω at 10% THD 10W Maximum operating voltage 28V Power output stage Noise floor 2 m V Line output Noise floor 55 µV 0V- 5V DC controlled volume attenuation 80 d B Mute attenuation 75 d B Standby-mode supply current 7 m A Features n n n n Quiet fade-in/out mute function Stereo variable line-out pins AC output short circuit protection Thermal shutdown protection Applications n Stereo TVs n ponent stereo n pact stereo Typical Application DS100043-1 FIGURE 1. Typical Audio Amplifier Application Circuit © 1999 National Semiconductor Corporation DS100043 .national. Connection Diagram Plastic Package DS100043-2 Top View Order Number See NS Package Number TA15A for Staggered Lead Non-Isolated Package .national. Absolute Maximum Ratings (Notes 3, 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Output Current Power Dissipation (Note 5) ESD Susceptibility (Note 6) ESD Susceptibility (Note 7) Junction Temperature 32V Internally Limited 22W 2000V 250V...