G1427 Datasheet | Global Mixed-mode Technology

Global Mixed-mode Technology Inc. 2W Stereo Audio Amplifier 6d B10d B15.6d B21.6d B Selectable Gain Settings Features Internal Gain Control, Which Eliminates External Gain-Setting Resistors - Depop Circuitry Integrated - Output Power at 1% THD+N, VDD=5V --2.0W/CH (typical) into a 4Ω Load --1.2W/CH (typical) into a 8Ω Load - Bridge-Tied Load (BTL), Single-Ended (SE) - Stereo Input MUX .. - PC-Beep Input - Fully differential Input - Shutdown Control Available - Surface-Mount Power Package 24-Pin TSSOP-P - General Description G1427 is a stereo audio power amplifier in 24pin TSSOP thermal pad package. It can drive 2.0W continuous RMS power into 4Ω load per channel in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. To simplify the audio system design in the notebook application, G1427 supports the Bridge-Tied Load (BTL) mode for driving the speakers, Single-End (SE) mode for driving the headphone. For the low current consumption applications, the SHDN mode is supported to disable G1427 when it is idle. The current consumption can be reduced to 160µA (typically). Amplifier gain is internally configured and controlled by two terminals (GAIN0, GAIN1). BTL gain settings of 6d B, 10d B, 15.6d B, 21.6d B are provided, while SE gain is always configured as 4.1d B (inverting) for headphone driving. G1427 also supports two input paths, that means two different amplitude AC signals can be applied and chosen by setting HP/ LINE pin. It enhances the hardware designing flexibility. Applications - Stereo Power Amplifiers for Notebooks or Desktop puters - Multimedia Monitors - Stereo Power Amplifiers for Portable Audio Systems Ordering Information ORDER NUMBER G1427F31U Note: U:Tape & Reel (FD): Thermal Pad ORDER NUMBER (Pb free) G1427F31Uf TEMP. RANGE -40°C to +85°C PACKAGE TSSOP-24 (FD) Pin Configuration GND/HS GAIN0 GAIN1 LOUT+ LLINEIN LPHIN PVDD RIN LOUTLIN BYPASS 1 2 3 4 5 6 7 8 9...