TPA6133A2_14 Datasheet, PDF (1/19 Pages) Texas Instruments – 138-mW DIRECTPATH™ STEREO HEADPHONE AMPLIFIER

TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
138-mW DIRECTPATH™ STEREO HEADPHONE AMPLIFIER
Check for Samples: TPA6133A2
FEATURES
1
•2 DirectPath™ Ground-Referenced Outputs
– Eliminates Output DC Blocking Capacitors
– Reduces Board Area
– Reduces Component Height and Cost
– Full Bass Response Without Attenuation
• Power Supply Voltage Range: 2.5 V to 5.5 V
• High Power Supply Rejection Ratio
(>100 dB PSRR)
• Differential Inputs for Maximum Noise
Rejection (69 dB CMRR)
• High-Impedance Outputs When Disabled
• Advanced Pop and Click Suppression
Circuitry
• GPIO Control for Shutdown
• 20 Pin, 4 mm x 4 mm QFN Package
DESCRIPTION
The TPA6133A2 is a stereo DirectPath™ headphone
amplifier with GPIO control. The TPA6133A2 has
minimal quiescent current consumption, with a typical
I_DD of 4.2 mA, making it optimal for portable
applications. The GPIO control allows the device to
be put in a low power shutdown mode.
The TPA6133A2 is a high fidelity amplifier with an
SNR of 93 dB. A PSRR greater than 100 dB enables
direct-to-battery connections without compromising
the listening experience. The output noise of 12
μVrms (typical A-weighted) provides a minimal noise
background during periods of silence. Configurable
differential inputs and high CMRR allow for maximum
noise rejection in the noisy environment of a mobile
device.
TPA6133A2 is available in a 4 by 4 mm QFN
package.
APPLICATIONS
• Mobile Phones
• Audio Headsets
• Notebook Computers
• High Fidelity Applications
SIMPLIFIED APPLICATION DIAGRAM
GPIO
VBAT
2.2KQ
Audio Source
0.47uF
LEFT_OUTM
0.47uF
LEFT_OUTP
0.47uF
RIGHT_OUTM
0.47uF
RIGHT_OUTP
SD
TEST1 TEST2
LEFTINM
LEFTINP
HPLEFT
RIGHTINM
RIGHTINP
CPP
CPN CPVSS
HPRIGHT
GND
GND
VDD
VDD
1uF
1uF
1uF
1uF
VBAT
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DirectPath is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated