This is information on a product in full production. The product is STA333ML 2-channel microless high-efficiency digital audio system Sound Terminal®. It features a wide supply voltage range, 2 x 20 W power output, 100-dB SNR, selectable input sample rates, etc.
The STA333ML is a single-die device that combines digital audio processing and high-efficiency Class-D power amplification. It operates without an external microcontroller, making it suitable for low-cost applications such as wireless speaker cradles, digital speakers, and LCD terminals.
Key features include two channels of 24-bit DDX® digital input, a selectable sample rate (32 kHz to 48 kHz), and an internal processing sample rate of 96 kHz. The device offers a total output power of 2 x 20 W into 8 Ω at 18 V with efficiency exceeding 90%. It includes built-in protection against thermal overload, short-circuit, overcurrent, and overvoltage conditions.
| Output power (BTL) | 2 x 20 W into 8 Ω at 18 V |
|---|---|
| Supply voltage range | 4.5 - 20 V |
| Signal-to-noise ratio | 100 dB |
| Efficiency | >90% |
| Internal processing sample rate | 96 kHz |
| Package type | PowerSSO-36 EPD |
150 °C.
The device can operate with a power supply voltage of up to 20 V.
The amplifier delivers a total output power of 2 x 20 W.
The maximum operating junction temperature is 150 °C.