LM4916 Datasheet | National Semiconductor

Description The unity gain stable LM4916 is both a mono differential output (for bridge-tied loads or BTL) audio power amplifier and a Single Ended (SE) stereo headphone amplifier. Operating on a single 1.5V supply, the mono BTL mode delivers 85m W into an 8Ω load at 1% THD+N. In Single Ended stereo headphone mode, the amplifier delivers 14m W per channel into a 16Ω load at 1% THD+N. With the LM4916 packaged in the MM and LLP packages, the customer benefits include low profile and small size. These packages minimize PCB area and maximizes output power. The LM4916 features circuitry that reduces output transients ("clicks" and "pops") during device turn-on and turn-off, an externally controlled, low-power consumption, active-low shutdown mode, and thermal shutdown. Boomer audio power amplifiers are designed specifically to use few external ponents and provide high quality output power in a surface mount package. Key Specifications n n n n n n n Mono-BTL output power (RL = 8Ω, VDD = 1.5V, THD+N = 1%) 85m W (typ) Stereo Headphone output power (RL = 16Ω, VDD = 1.5V, THD+N = 1%) 14m W (typ) Micropower shutdown current 0.02µA (typ) Supply voltage operating range 0.9V < VDD < 2.5V PSRR 1k Hz, VDD = 1.5V 66d B (typ) Features n Single-cell 0.9V to 2.5V battery operation n BTL mode for mono speaker n Single ended headphone operation with coupling capacitors n Unity-gain stable n "Click and pop" suppression circuitry n Active low micropower shutdown n Low current, active-low mute mode n Thermal shutdown protection circuitry Applications n Portable one-cell audio products n Portable one-cell electronic devices Typical Application FIGURE 1. Block Diagram Boomer ® is a registered trademark of National Semiconductor Corporation. © 2003 National Semiconductor Corporation DS200487 .national. Connection Diagrams MSOP Package MSOP Marking 200487F9 - Plant Code X - Date Code T - Die Traceability G - Boomer Family A9 - LM4916MM Top View Order Number...