Audio ICs Speaker / headphone switch power amplifier BA5210FS The BA5210FS is a power amplifier with a built-in monaural speaker / stereo headphone switch. The speaker drive is BTL for large output, and when the headphones are connected, the “center-amp” design means that coupling is not required. This significantly reduces the number of external components required, and makes this IC ideal for compact sets that have high component density. Mute and standby functions are provided, and direct microprocessor control is possible. Applications Notebook computers, electronic books, portable CD players, video cameras with built-in monitors, LCD TVs, radios, and electronic instruments Features 1) Built-in BTL / stereo switch circuit. 2) Mute function. 3) Standby function. Block diagram 510 4) Few external components required. 5) Low current dissipation and good sound quality. Audio ICs BA5210FS FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 511 Audio ICs Pin descriptions 512 BA5210FS Audio ICs BA5210FS 513 Audio ICs BA5210FS FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 3.3V RL = 8Ω, f= 1kHz and Rg = 600Ω) 514 Audio ICs BA5210FS Measurement circuit Application example 515 Audio ICs Operation notes A characteristic of this IC is that if it is used with a supply voltage that is less than the recommended value (2.5V), the OUT-R offset increases. When using the IC with a BTL 8Ω load, if the voltage drops, the supply current will increase accompanied by an increase in power supply impedance, which can lead to low-frequency blocking oscillation. For this reason, we recommend that you use a low-voltage detection circuit that puts the IC in the standby state when the voltage drops below 2.5V. Electrical characteristics curves 516 BA5210FS Audio ICs BA5210FS External dimensions (Units: mm) 517