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LM4835MTE Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4835MTE Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 16 page LM4835 Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain General Description The LM4835 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifi- ers capable of producing 2W into 4 Ω (Note 1) with less than 1.0% THD or 2.2W into 3 Ω (Note 2) with less than 1.0% THD. Boomer® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4835 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications. The LM4835 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance. Note 1: When properly mounted to the circuit board, the LM4835MTE will deliver 2W into 4 Ω. The LM4835MT will deliver 1.1W into 8Ω. See the Appli- cation Information section for LM4835MTE usage information. Note 2: An LM4835MTE which has been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3 Ω. Key Specifications n PO at 1% THD+N into 3 Ω (LM4835MTE) 2.2W(typ) into 4 Ω (LM4835MTE) 2.0W(typ) into 8 Ω (LM4835) 1.1W(typ) n Single-ended mode - THD+N at 85mW into 32 Ω 1.0%(typ) n Shutdown current 0.7µA(typ) Features n PC98 Compliant n DC Volume Control Interface n System Beep Detect n Stereo switchable bridged/single-ended power amplifiers n Selectable internal/external gain and bass boost configurable n “Click and pop” suppression circuitry n Thermal shutdown protection circuitry Applications n Portable and Desktop Computers n Multimedia Monitors n Portable Radios, PDAs, and Portable TVs Block Diagram Connection Diagram Boomer® is a registered trademark of NationalSemiconductor Corporation. DS100139-1 FIGURE 1. LM4835 Block Diagram TSSOP Package DS100139-2 Top View Order Number LM4835MT See NS Package Number MTC28 for TSSOP Order Number LM4835MTE See NS Package Number MXA28A for Exposed DAP TSSOP March 1999 © 1999 National Semiconductor Corporation DS100139 www.national.com |
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