SGM4918 Datasheet | SG Micro

SGM4918 80m W, Capless, Stereo Headphone Amplifier with Shutdown GENERAL DESCRIPTION The SGM4918 stereo headphone amplifier is designed for portable equipment where board space is at a premium. The SGM4918 uses capless architecture to produce a ground-referenced output from a single power supply, eliminating the need for large DC-blocking capacitors for output, saving cost, board space, and ponent height. Additionally, for SGM4918B, the gain is set internally (-2V/V), further reducing ponent count. For SGM4918A, the gain can be adjusted by external feedback resistors. The SGM4918 delivers up to 80m W per channel into a 32Ω load and has low 0.03% THD+N. A -78d B power supply rejection ratio (PSRR) at 217Hz allows this device to operate from noisy digital supplies without an additional linear regulator. prehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown. The SGM4918 operates from a single 2.7V to 5.1V supply, consumes only 5.8m A...