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TPA6020A2-TPA6020A2RGWR-TPA6020A2RGWRG4-TPA6020A2RGWT
Stereo, Fully Differential Class-AB Audio Amplifier
www.ti.com
FEATURES APPLICATIONS
DESCRIPTION
APPLICATION CIRCUIT
GND
20-PIN QFN (RGW) PACKAGE20
(See noteA)
RVDD
ROUT+
LOUT+
ROUT-
LOUT-
GND 2, 5, Thermal Pad
LVDD
To Supply
To Supply
Bias
Circuitry
RIN-
LIN-
RIN+
LIN+
In From
In From
DAC
DAC
SHUTDOWNI (RBYPASS) (LBYPASS)
100 kW100 kW
40 kW
40 kW
40 kW
40 kWSLOS458B–JULY 2005–REVISED
2.8-W STEREO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER Notebook PCs•
Ideal for Notebook PCs LCD TVs•
Fully Differential Architecture and High
PSRR (-80 dB) Provide Excellent RF
Rectification Immunity 2.8W Into3Ω
Froma 5-V Supplyat The TPA6020A2isa 2.8-W
THD= 10% (Typical) (BTL) amplifier designed
withat least 3-Ω impedance.•
Very Low Crosstalk: from 2.5Vto 5.5V, drawing
– -100 dB Typicalat5V,3Ω supply current. The feedback•
2.5-Vto 5.5-V Operating Range allowing the gain to with only two input
resistors per channel. fully differential•
Low Supply Current: architecture performs with -80 dBof power supply
–8 mA Typicalat5V rejection from 20 Hzto2 kHz, improved RF rectifi-
– Shutdown Current: 80-nA Typical cation immunity, small PCB area, anda fast startup
time with minimal pop, making the TPA6020A2 ideal•
Fast Startup (27 ms) With Minimal Pop for notebook PC applications.•
Internal Feedback Resistors Reduce
Component Count
Thermally Enhanced QFN Packaging
