General Description

APA2120/1 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged audio power amplifiers capable of producing 2.7W(2.0W) into 3Ω 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.

Features

• Low operating current with 14mA

• Improved depop circuitry to eliminate turn-on and turn off transients in outputs

• High PSRR

• 32 steps volume adjustable by DC voltage with hysteresis

• 2W per channel output power into 4Ω 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 (50µA)

• Short Circuit Protection

• Power off depop circuit integration

• TSSOP-24 with or without thermal pad package

Applications

• NoteBook PC

• LCD Monitor or TV