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
TA | PACKAGED DEVICES | MSOP Symbolization | |
SMALL OUTLINE† (D) | MSOP† (DGN) | ||
–40°C to 85°C | TPA122D | TPA122DGN | TI AAE |
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