General Description
APA2120/1 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged audio power amplifiers is capable of producing 2.7W(2. 0W) into 3W with less than 10% (1.0%)THD+N. The attenuator range of the volume control in APA2120/1 is from 20dB (DC_Vol=0V) to -80dB (DC_Vol=3.54V) with 32 steps. The advantage of internal gain setting can be less components and PCB area. Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in APA2120/1 and reduce pops and clicks noise during power up or shutdown mode operation.

FEATUREs
• Low Operating Current with 14mA
• Improved Depop Circuitry to Eliminate Turn-on and Turn-off Transients in Outputs
• HighPSRR
• 32 Steps Volume Adjustable by DC Voltage with Hysteresis
• 2W Per Channel Output Power into 4W Load at 5V, BTL Mode
• Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL Pin
• Low Current Consumption in Shutdown Mode (50mA)
• Short Circuit Protection
• Power off Depop Circuit Integration
• TSSOP-24P with or without Thermal Pad Package
• Lead Free and Green Devices Available (RoHS Compliant)

APPLICATIONs
• NoteBook PC
• LCD Monitor or TV