data brief for further information contact your local stmicroelectronics sales office. february 2009 rev 1 1/4 4 STEVAL-CCA008V1 demonstration board for 2x1 w di fferential input stereo audio amplifier based on the ts4998 features operating range from v cc = 2.7 v to 5.5 v 1 w output power per channel @v cc =5 v,thd+n =1%, rl =8 ? ultra low standby consumption:10 na typ. 80 db psrr @ 217 hz with grounded inputs high snr: 106 db(a) typ. fast startup time: 45 ms typ. circuit free of pop and click dedicated standby pin per channel lead-free qfn16 4x4mm package description the demonstration board STEVAL-CCA008V1 is made to evaluate the ts4998 that 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 1 w per channel of continuous rms output power into an 8 ? load at 5 v. each output channel (left and right) also has its own external controlled standby mode pin to reduce the supply current to less than 10 na per channel. the device also features an internal thermal shutdown protection. the gain of each channel can be configured by external gain setting resistors. STEVAL-CCA008V1 www.st.com
circuit schematic STEVAL-CCA008V1 2/4 1 circuit schematic figure 1. schematic cin1 330nf 1 2 3 4 jp1 c b 1 u f c s 2 100nf c s 1 1 u f cn5 r1 24k r2 24k cn2 cn1 1 2 3 4 jp2 r3 24k r4 24k cn4 cn3 cn6 cn7 1 2 3 cn 8 vcc 1 2 3 cn9 vcc cin2 330nf cin3 330nf cin4 330nf vcc 1 2 4 3 13 5 6 14 12 11 9 10 8 7 bia ss tby left right li n- rin- li n+ rin+ byp ass gnd gnd lout- lout+ rout- rout+ - + + - s tbyl s tbyr vcc t s 499 8 u1 t s 499 8 - qfn16
STEVAL-CCA008V1 revision history 3 /4 2 revision history table 1. document revision history date revision changes 09-feb-2009 1 initial release.
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