HWD2161 is a bridge-connected audio power amplifier that can provide 1.1W of average continuous power to an 8Ω load using a 5V power supply with a THD+N of 1%. The HWD2161 audio power amplifier is designed to provide high-quality output power and uses surface mount technology with a minimum number of external components. The HWD2161 does not require output coupling capacitors, bootstrap capacitors, or buffer circuits, making it ideal for low-power portable systems. The HWD2161 uses an externally controlled low-power shutdown mode and an internal thermal shutdown protection mechanism. Overall gain stability of the HWD2161 can be set to as high as 10 differential gain through an external gain configuration resistor, without the need for external compensation components. Higher gains can be achieved through appropriate compensation.
The HWD2161 is a bridge‑connected audio power amplifier designed for low‑power portable systems. It operates from a 5 V supply, delivers up to 1 W into an 8 Ω load, and features an external‑control shutdown mode with a typical standby current of 0.6 µA. The device requires no output coupling capacitor, bootstrap capacitor, or buffer network, making it suitable for compact designs.
The datasheet provides electrical characteristics, absolute maximum ratings, typical application circuits, and performance curves. It also describes recommended power‑supply bypass components and the shutdown function, enabling designers to integrate the amplifier into PCs, portable consumer products, toys, and audio devices. This manual is written in Chinese.
| Continuous average output power | 1 W into 8 Ω load |
|---|---|
| THD+N (max) | 1 % (max) |
| Shutdown current (typical) | 0.6 µA |
| Supply voltage | 5 V |
| Operating temperature range | -65 °C to +150 °C |
The typical shutdown (standby) current is 0.6 µA.
It can deliver 1 W of continuous average output power into an 8 Ω load.
The THD+N is specified as 1 % maximum.
The amplifier operates from a 5 V supply.