AN12948A Audio Power IC for Note PC

Description:

AN12948A is the stereo BTL amplifier which contained the AGC circuit for clip prevention of a speaker output and headphone amplifier within charge pump.
This IC performs a mode change by pararel control system. (Standby function ON/OFF change etc.)

Features:

•  In order to realize high efficiency of output power, it adopts CMOS power amplifier circuit .
•  Max. Power: 1.4 W (VCCSP = 5 V, RL = 8 Ω, THD = 10%)
  2.2 W (VCCSP = 5 V, RL = 4 Ω, THD = 10%)
•  The resistance and the capacitor of a detector circuit which were being used for the conventional AGC.
•  The filter circuit for the frequency response decision can be composed of the input circuit.
•  Built-in direct drive headphone amplifier within charge pump.
•  STBY function (countermeasure pop noise)
  The standby terminal of the speaker amplifier and the headphone amplifier is prepared by each of two terminals.
  When either of two terminals becomes "High", it is standby OFF.
•  AGC ON/OFF function
•  AGC ON Level select function
•  AGC attack time select function
•  AGC recovery time select function
•  Cellular phone measures
  RF noise prevention
•  Built-in over current protection

Application:

•  For the notebook personal computer

Package included:

• 1 x AN12948A Audio Power IC for Note PC