TPA6020A2 Datasheet | Texas Instruments

FEATURES - Ideal for Notebook PCs - Fully Differential Architecture and High PSRR (-80 d B) Provide Excellent RF Rectification Immunity - 2.8 W Into 3 Ω From a 5-V Supply at THD = 10% (Typical) - Very Low Crosstalk: - -100 d B Typical at 5 V, 3 Ω - 2.5-V to 5.5-V Operating Range - Low Supply Current: - 8 m A Typical at 5 V - Shutdown Current: 80-n A Typical - Fast Startup (27 ms) With Minimal Pop - Internal Feedback Resistors Reduce ponent Count - Thermally Enhanced QFN Packaging APPLICATIONS - Notebook PCs - LCD TVs DESCRIPTION The TPA6020A2 is a 2.8-W stereo bridge-tied load (BTL) amplifier designed to drive stereo speakers with at least 3-Ω impedance. The device operates from 2.5 V to 5.5 V, drawing only 8 m A of quiescent supply current. The feedback resistors are internal, allowing the gain to be set with only two input resistors per channel. The amplifier's fully differential architecture performs with -80 d B of power supply rejection from 20 Hz to 2 k Hz, improved RF rectification immunity, small PCB area, and a fast startup time with minimal pop, making the TPA6020A2 ideal for notebook PC applications. APPLICATION CIRCUIT In From DAC - RI + RI 40 k W 17 RIN- _ 16 RIN+ + 40 k W 19 RVDD ROUT+ 1 ROUT- 3 To Supply 20-PIN QFN (RGW) PACKAGE (TOP VIEW) NC RVDD NC RINRIN+ 14 SHUTDOWN 100 k W Bias 9 Circuitry 100 k W C(RBYPASS) (See note A) C(LBYPASS) 2, 5, Thermal Pad In From...