Microwave Integrated Circuit Chip Dual Stereo Audio Power Amplifier

Microwave Integrated Circuit Chip Dual Stereo Audio Power Amplifier

TPA122 150-mW STEREO AUDIO POWER AMPLIFIER

150 mW Stereo Output

PC Power Supply Compatible

– Fully Specified for 3.3 V and 5 V Operation

– Operation to 2.5 V

Pop Reduction Circuitry

Internal Mid-Rail Generation

Thermal and Short-Circuit Protection

Surface-Mount Packaging

– PowerPAD MSOP

– SOIC Pin

Compatible With LM4880 and LM4881 (SOIC)

description

  The TPA122 is a stereo audio power amplifier packaged in either an 8-pin SOIC, or an 8-pin PowerPAD MSOP package capable of delivering 150 mW of continuous RMS power per channel into 8-Ω loads. Amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation for settings of 1 to 10.

  THD+N when driving an 8-Ω load from 5 V is 0.1% at 1 kHz, and less than 2% across the audio band of 20 Hz to 20 kHz. For 32-Ω loads, the THD+N is reduced to less than 0.06% at 1 kHz, and is less than 1% across the audio band of 20 Hz to 20 kHz. For 10-kΩ loads, the THD+N performance is 0.01% at 1 kHz, and less than 0.02% across the audio band of 20 Hz to 20 kHz.

typical application circuit

Terminal Functions

absolute maximum ratings over operating free-air temperature (unless otherwise noted)†

Supply voltage, VDD  6 V

Input voltage, VI  –0.3 V to V  DD + 0.3 V

Continuous total power dissipation internally limited

Operating junction temperature range, TJ    °C to 150°C

Storage temperature range, Tst  –65 . °C to 150°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds   260 °C

TYPICAL CHARACTERISTICS