STEVAL-CCA008V1 STMicroelectronics

TS4998 2 x 1W differential input stereo audio amplifier Features QFN16 4x4mm Operating range from V = 2.7V to 5.5V CC 1W output power per channel V =5V, CC THD+N=1%, R =8 L Ultra low standby consumption: 10nA typ. 80dB PSRR 217Hz with grounded inputs High SNR: 106dB(A) typ. Fast startup time: 45ms typ. Pop&click-free circuit Dedicated standby pin per channel Pin connections (top view) Lead-free QFN16 4x4mm package 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 8 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 Obsolete Product(s) - Obsolete Product(s)Contents TS4998 Contents 1 Typical application schematics 3 2 Absolute maximum ratings . 4 3 Electrical characteristics . 5 4 Application information . 20 4.1 General description . 20 4.2 Differential configuration principle 20 4.3 Gain in typical application schematic 20 4.4 Common mode feedback loop limitations . 21 4.5 Low frequency response . 22 4.6 Power dissipation and efficiency . 23 4.7 Footprint recommendation 25 4.8 Decoupling of the circuit 25 4.9 Standby control and wake-up time t WU 26 4.10 Shutdown time . 26 4.11 Pop performance . 27 4.12 Single-ended input configuration . 27 4.13 Notes on PSRR measurement . 28 5 QFN16 package information 29 6 Ordering information . 31 7 Revision history . 32 2/33 Obsolete Product(s) - Obsolete Product(s)