TPA6133A2_15 Datasheet, PDF (1/26 Pages) Texas Instruments – TPA6133A2 138-mW DirectPath™ Stereo Headphone Amplifier

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TPA6133A2
SLOS821B – JUNE 2013 – REVISED SEPTEMBER 2014
TPA6133A2 138-mW DirectPath™ Stereo Headphone Amplifier
1 Features
•1 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 WQFN Package
2 Applications
• Mobile Phones
• Audio Headsets
• Notebook Computers
• High Fidelity Applications
3 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA6133A2
WQFN (20)
4.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Application Diagram
GPIO
VBAT
2.2K3
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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.