an12949a Panasonic Corporation of North America, an12949a Datasheet - Page 3

• Manufacturer Part Number: an12949a
• Description: Audio Power Ic For Note Pc
• Manufacturer: Panasonic Corporation of North America

AN12949A
AN12949A
Audio Power IC for Note PC
Overview
Features
Applications
Package
Type
AN12949A is the stereo BTL amplifier which contained the AGC circuit for clip prevention of a speaker output.
This IC performs a mode change by parallel control system. (Standby function ON/OFF change etc.)
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%)
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.
STBY function (countermeasure pop noise)
The standby terminal of the speaker amplifier is prepared by each of two terminals.
When either of two terminals becomes " Low ", 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
For the notebook personal computer
48-pin plastic quad flat package with heat slug (QFP type)
Silicon monolithic BI-CMOS IC
2.2 W (VCCSP = 5 V, RL = 4 Ω, THD = 10%)
SDF00043BEB
3