HWD2161 is a 1.1W bridge-connected audio power amplifier that uses a 5V voltage source to transmit an average continuous power of 1.1W to an 8Ω load with THD+N of 1%. The HWD2161 audio power amplifier is designed to provide high-quality output power. It uses surface packaging technology with the least external components. HWD2161 does not require output coupling capacitors, boost capacitors, or buffer circuits. It is best suited for low power portable systems. HWD2161 uses an external control low power shutdown mode and an internal thermal shutdown protection mechanism. The overall gain stable HWD2161 can be set to a differential gain of up to 10 via external gain configuration resistors 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 1.1 W continuous output into an 8 Ω load, and features an external‑control shutdown mode with a typical shutdown current of 0.6 µA. The device requires no output coupling capacitor, bootstrap capacitor, or buffer network, making it suitable for compact designs.
Typical applications include personal computers, portable consumer products, speakers, toys, and gaming devices. The manual provides electrical characteristics, typical application circuits, pin descriptions, and design guidelines for achieving high‑gain configurations and low‑noise operation. This manual is written in Chinese.
| Continuous output power | 1.1 W into 8 Ω |
|---|---|
| Typical output power | 1.5 W (typical) |
| THD+N | ≤ 1 % (max) |
| Shutdown current | 0.6 µA (typical) |
| Supply voltage | 5 V (typical), 4.0 V–5.5 V range |
| Static power consumption | 0.6 mA–10 mA (max) |
The shutdown current is 0.6 µA typical.
It operates from a 5 V supply, with a recommended range of 4.0 V to 5.5 V.
The device can deliver up to 1.1 W continuous into an 8 Ω load.
No, the amplifier is designed without the need for an output coupling capacitor.