APA2068

Features:

` Low Operating Current with 9mA
` Improved Depop Circuitry to Eliminate Turn-on and Turn-off Transients in Outputs
` High PSRR
` 32 Steps Volume Adjustable by DC Voltage with Hysteresis
` 2.6W per Channel Output Power into 4W Load at 5V,BTLMode
` Two Output Modes Allowable with BTL and SE Modes Selected by SE/BTL pin
` Low Current Consumption in Shutdown Mode (1A)
` Short Circuit Protection
` Thermal shutdown protection and over current protection circuitry
` Maximum Output Swing Clamping Function
` SOP-16-P Packages with Thermal Pad Package
` Lead Free Available (RoHS Compliant)




Application

· NoteBook PC
· LCD Monitor or TV




Specifications

Symbol	Parameter	Rating	Unit
VDD	Supply Voltage Range	-0.3 to 6	V
VIN	Input Voltage Range, SE/BTL , SHUTDOWN ,Mute	-0.3 to VDD+0.3	v
TA	Operating Ambient Temperature range	-40 to 85	°C
TJ	Maximum Junction Temperature	Intermal Limited*1	°C
TSTG	Storage Temperature Range	-65 to +150	°C
TS	Soldering Temperature , 10 seconds	260	°C
VESD	Electrostatic Discharge	-3000 to 3000*2 -200 to 200*3	V
PD	Power Dissipation	Intermal Limited

Description

The APA2068 is designed as one kind of stereo 2.6W audio power amplifier that can be used in LCD Monitor or TV and NoteBook PC. This device improves the power off pop noise and protects the chip from being destroyed by over temperature and short current failure, and combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal.

Features of the APA2068 are:(1)low operating current with 9mA; (2)improved depop circuitry to eliminate turn-on and turn-off transients in outputs; (3)high PSRR; (4)32 steps volume adjustable by DC voltage with hysteresis; (5)2.6W per channel output power into 4W load at 5V,BTLmode; (6)two output modes allowable with BTL and SE Modes Selected by SE/BTL pin; (7)low current consumption in shutdown mode (1mA); (8)short circuit protection; (9)thermal shutdown protection and over current protection circuitry; (10)maximum output swing clamping function; (11)SOP-16-P packages with thermal pad package; (12)lead free available (RoHS compliant).

The absolute maximum ratings of the APA2068 can be summarized as:(1)Supply Voltage Range: -0.3 to 6 V;(2)Power Dissipation: Intermal Limited;(3)Electrostatic Discharge: -3000 to 3000 V;(4)Soldering Temperature,10 seconds: 260 °C;(5)Storage Temperature Range: -65 to +150 °C;(6)Maximum Junction Temperature: Intermal Limited;(7)Operating Ambient Temperature Range: -40 to 85 °C. If you want to know more information such as the electrical characteristics about it, please download the datasheet in www.seekic.com or www.chinaicmart.com.

APA2068 is a monolithic integrated circuit, which provides precise DC volume control, and a stereo bridged audio power amplifiers capable of producing 2.6W(1.8W) into 4W withlessthan 10%(1.0%)THD+N. The attenuator range of the volumecontrol inAPA2068 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 APA2068, that reduce pops and clicks noise during power up or shutdown mode operation. It also improves the power off pop noise and protects the chip from being destroyed by over temperature and short current failure. To simplify the audio system design, APA2068 combines a stereo bridge-tied loads (BTL ) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip, where both modes are easily switched by the SE/BTL input control pin signal.