The TPA0242 is a 2.8W audio power amplifier with DC volume control and MUX control. It has internal gain control, which eliminates external gain-setting resistors. It supports PC 99 desktop line-out and PC 99 portable into 8-Ω load. It can deliver 2.8W/Ch output power into 3-Ω load.
The TPA0242 is a stereo audio power amplifier in a 24‑pin TSSOP PowerPAD (PWP) package that delivers 2.8 W continuous RMS power per channel into 3‑Ω loads. It features internal depop circuitry, a DC‑controlled volume with 31 steps, and an input MUX that selects between two stereo sources.
Key specifications include a normal supply current of 20 mA, a shutdown current of 150 µA, a supply voltage range of 4.5 V‑5.5 V, and thermal impedance of about 35 °C/W. The device supports both single‑ended and bridge‑tied load modes and provides low THD+N (0.22 % at 1 W, 20 Hz‑15 kHz).
| Output Power per Channel | 2.8 W RMS into 3‑Ω loads |
|---|---|
| Supply Current (normal operation) | 20 mA |
| Thermal Impedance | ≈35 °C/W |
| Supply Voltage Range | 4.5 V – 5.5 V |
| THD+N (1 W, 20 Hz‑15 kHz) | 0.22 % |
The device can deliver up to 2.8 W of continuous RMS power per channel into a 3‑Ω load.
Volume is set by applying a DC voltage to the VOLUME terminal, which provides 31 discrete steps from +20 dB to –40 dB.
It is offered in a 24‑pin TSSOP PowerPAD (PWP) thermally‑enhanced package.