G1431 Datasheet | Global Mixed-mode Technology

Global Mixed-mode Technology Inc. 2W Stereo Audio Amplifier 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) Supported - Fully differential Input - Shutdown Control Available .. - Surface-Mount Power Package 20-Pin TSSOP-P & 20-Pin TQFN 4X4 - General Description G1431 is a stereo audio power amplifier in 20pin TSSOP thermal pad package or 20-pin TQFN 4X4. It can drive 2W 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 and to enlarge the driving power, G1431 supports the Bridge-Tied Load (BTL) mode for driving the speakers. For the low current consumption applications, the SHDN mode is supported to disable G1431 when it is idle. The current consumption can be reduced to 150µA (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. Applications - Stereo Power Amplifiers for Notebooks or Desktop puters - Multimedia Monitors - Stereo Power Amplifiers for Portable Audio Systems Ordering Information ORDER MARKING NUMBER G1431F2U G1431R9U G1431 1431 TEMP. RANGE PACKAGE (Pb free) -40°C to +85°C TSSOP-20 (FD) -40°C to +85°C TQFN4X4-20 R9:TQFN4X4-20 Note: F2: TSSOP-20 (FD) U: Tape & Reel Pin Configuration ROUT+ ROUT- PVDD RIN- GND GAIN0 GAIN1 10 9 NC GND GND BYPASS LIN+ LOUT+ LINPVDD RIN+ LOUTLIN+ 1 2 3 4 5 6 7 8 9 20 19 18 17 GND SHUTDOWN ROUT+ RINVDD PVDD ROUTGND NC GND SHUTDOWN GND GND GAIN0...