The TPA112 is a 150mW stereo audio power amplifier from TI, packaged in an 8-pin PowerPAD™ MSOP package, supports 3.3V and 5V power supply, and can output 150mW of continuous RMS power.
The TPA112 is a stereo audio power amplifier packaged in an 8‑pin PowerPAD™ MSOP. It can operate from 2.5 V to 5.5 V supply voltage and delivers up to 150 mW continuous RMS power per channel into 8‑Ω loads. Gain is set externally with two resistors per channel.
The device includes thermal and short‑circuit protection, offers low THD+N (0.1 % at 1 kHz into 8 Ω), high input impedance (>1 MΩ), and a typical supply current of 1.5–3 mA. Detailed electrical characteristics, mechanical dimensions, and warranty information are provided.
| Supply voltage range | 2.5 V – 5.5 V |
|---|---|
| Typical output power (3.3 V supply) | 70 mW per channel |
| Input impedance | >1 MΩ |
| Supply current | 1.5 mA – 3 mA |
| Output offset voltage | 10 mV |
| Phase margin | 56° – 58° |
| Signal‑to‑noise ratio | 100 dB |
| Protection features | Thermal and short‑circuit protection |
The device operates from 2.5 V up to 5.5 V.
The amplifier includes thermal and short‑circuit protection.
The input impedance is greater than 1 MΩ.