BA5204F - 3V / 35mW dual power amplifier
(refer to the Internal Circuit diagram) (1) Preamplifier Stage The preamplifier is comprised of the level-shift transistor Q101, a differential amplifier (Q102 and Q105), and the active load (Q103 and Q106).
The input is a PNP transistor that does not require a coupling capacitor.
(2) Pre-drive stag
Audio ICs 3V / 35mW dual power amplifier BA5204F The BA5204F is a dual-channel power amplifier designed for 3V stereo headphone tape players.
There is almost no “pop” sound generated when the power is switched on and off, so this IC is ideal for headphone applications.
Input coupling capacitors are not required, and only one filter capacitor is needed which helps reduce set size.
In addition to operating off low voltage, the IC has low distortion, making it suitable for Hi-Fi applications.
The
BA5204F Features
* 1) Rated output of 35mW (RL = 32Ω) off a 3V power supply. 2) Low “pop” noise when power is switched on and off. 3) Low quiescent current (13mA). 4) Excellent ripple rejection ratio (38dB). 5) Begins operating at 1.5V. FBlock diagram 6) 7) 8) 9) 10) Low distortion (0.05% at PO = 5mW). Good voltage
