TS4998

TS4998 2 x 1W differential input stereo audio amplifier Features ■ ■ ■ QFN16 4x4mm Operating range from VCC= 2.7V to 5.5V 1W output power per channel @ VCC=5V, THD+N=1%, RL=8Ω Ultra low standby consumption: 10nA typ. @ 217Hz with grounded inputs High SNR: 106dB(A) typ. Fast startup time: 45ms typ. Pop&click-free circuit Dedicated standby pin per channel Lead-free QFN16 4x4mm package Pin connections (top view) ■ 80dB PSRR www.DataSheet4U.com ■ ■ ■ ■ ■ Applications ■ ■ ■ ■ Cellular mobile phones Notebook and PDA computers LCD monitors and TVs Portable audio devices Description The TS4998 is designed for top-class stereo audio applications. Thanks to its compact and power-dissipation efficient QFN16 package with exposed pad, it suits a variety of applications. With a BTL configuration, this audio power amplifier is capable of delivering 1W per channel of continuous RMS output power into an 8Ω load @ 5V. Each output channel (left and right), also has its own external controlled standby mode pin to reduce the supply current to less than 10nA per channel. The device also features an internal thermal shutdown protection. The gain of each channel can be configured by external gain setting resistors. December 2007 Rev 1 1/33 www.st.com 33 Contents TS4998 Contents 1 2 3 4 Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical ...