TPA2050D4
www.ti.com......................................................................................................
TPA2050D4
www.ti.com....................................................................................................................................................................................................... SLOS544 – JULY 2008
1.4 W/CH STEREO CLASS-D AUDIO SUBSYSTEM WITH DirectPath™ HEADPHONE AMPLIFIER AND 2:1 INPUT MUX
FEATURES
1
23 Stereo Class-D Amp: – 1.4 W into 8 Ω from 5.0 V (10% THD + N) – 1.25 W into 8 Ω from 5.0 V (1% THD + N)
DirectPath™ Stereo Headphone Amplifier – No Output
Capacitors Required
Gain Select for Headphone Amplifier Eight Programmable Maximum Headphone
Voltage Limits Two Single-Ended or One Differential Stereo
Input 2:1 Input MUX with Mode Control 32-Step Volume Control for Both Input
Channels Independent Shutdown for Headphone and
Class-D
Amplifiers Short-Circuit and Thermal-Overload Protection ±8 kV HBM ESD Protection on Headphone
Outputs I2C™ Interface 25-Ball 2,61 mm × 2,61 mm WCSP
APPLICATIONS
Smart Phones / Cellular Phones Laptop Computers Portable Gaming Portable Media Players
SIMPLIFIED SYSTEM BLOCK DIAGRAM
Codec (MP3)
FM Tuner
Left (SE )
Right (SE )
Left (SE )
TPA2050D4
Stereo Class-D
plus DirectPath
TM
Right (SE )
8 W Speaker 8 W Speaker
Stereo Headphone Jack
DESCRIPTION
The TPA2050D4 features a stereo Class-D power amplifier along with a stereo DirectPath™ headphone amplifier. The TPA2050D4 has two stereo single-ended (SE) inputs that can be configured as one stereo differential input....
