ROHM BA5210FS

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