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The APA3541/4 is an integrated class AB stereo headphone driver contained in an SO-8 or a DIP-8 plastic package with Mute feature . Besides the common Mute feature , the APA3541/4 further integrates a voltage divider inside the chip . Thus , the external resistors can be eliminated . The APA3541 has a fixed gain of 0dB and the APA3544 has a fixed gain of 6dB so that external gain setting is unnecessary. The device is fabricated in a CMOS process and has been primarily developed for portable digital audio applications .
APA3541 Maximum Ratings
Symbol
Parameter
Rating
Unit
VDD
Supply Voltage Range
7
V
tSC(O)
Output Short-circuit Duration, at TA=25°C, Ptot=1W
20
S
TA
Operating Ambient Temperature range
-40 to 85
°C
TJ
Maximum Junction Temperature
150
°C
TSTG
Storage Temperature Range
-65 to +150
°C
TS
Soldering Temperature , 10 seconds
300
°C
VESD
Electrostatic Discharge
-3000 to 3000 *1
V
APA3541 Features
• High Signal-to-Noise Ratio • High Slew Rate • Low Distortion • Large Output Voltage Swing • Flexible Mute Function • Excellent Power Supply Ripple Rejection • Low Power Consumption • Short-circuit Elimination • Wide Temperature Range • No Switch ON/OFF Clicks • Integrated Voltage Divider (VDD/2) to Eliminate External Resistors