TPA6102A2 Datasheet | Texas Instruments

TPA6102A2 50Ćm W ULTRALOWĆVOLTAGE, FIXEDĆGAIN STEREO HEADPHONE AUDIO POWER AMPLIFIER SLOS324B - JUNE 2000 - REVISED SEPTEMBER 2004 D 50-m W Stereo Output D Low Supply Current . . . 0.75 m A D Low Shutdown Current . . . 50 n A D Minimal External ponents Required D Gain Set Internally to 14 d B D Pop Reduction Circuitry D Internal Mid-Rail Generation D Thermal and Short-Circuit Protection D Surface-Mount Packaging - MSOP - SOIC D 1.6-V to 3.6-V Supply Voltage Range D or DGK PACKAGE (TOP VIEW) BYPASS 1 8 IN1- GND 2 7 VO1 SHUTDOWN 3 6 VDD IN2- 4 5 VO2 description The TPA6102A2 is a stereo audio power amplifier packaged in either an 8-pin SOIC package or an 8-pin MOSP package capable of delivering 50 m W of continuous RMS power per channel into 16-Ω loads. Amplifier gain is internally set to 14 d B (inverting) to save board space by eliminating six external resistors. The TPA6102A2 is optimized for battery applications because of its low-supply current, shutdown current, and THD+N. To obtain the low-supply voltage range, the TPA6102A2 biases BYPASS to VDD/4. When driving a 16-Ω load with 40-m W output power from 3.3 V, THD+N is 0.08% at 1 k Hz, and less than 0.2% across the audio band of 20 Hz to 20 k Hz. For 30 m W into 32-Ω loads, the THD+N is reduced to less than 0.06% at 1 k Hz, and is less than 0.3% across the audio band of 20 Hz to 20 k Hz. typical application circuit Audio Input 100 kΩ 8 IN 1- 20 kΩ CI 100 kΩ 1 BYPASS CB Audio Input 4 IN 2- 20 kΩ From Shutdown Control Circuit 3 SHUTDOWN 100 kΩ 100 kΩ VDD/4 - + - + Bias Control VDD 6 VDD...