The HT8696/HT8697 is a dual‑channel, filter‑less Class‑D/AB audio power amplifier with anti‑clipping protection and flexible voltage operation.
The HT8696/HT8697 series from ChipSourceTek provides a dual‑channel audio power solution that integrates anti‑clipping (ACF) functionality, filter‑less digital modulation, and built‑in protection features such as over‑current, over‑temperature, and undervoltage safeguards. It can operate in Class‑D mode for high efficiency or switch to Class‑AB mode when EMI concerns arise.
Typical applications include Bluetooth speakers, portable audio devices, 2.1‑channel mini‑speakers, and other compact sound systems. The device is offered in SOP16L‑PP (HT8696) and TSSOP20L‑PP (HT8697) packages and supports a wide supply voltage range, making it suitable for battery‑powered and low‑power designs. This manual is written in Chinese.
| Class‑D Output Power (VDD=8.5 V, 4 Ω) | 2 × 9.5 W |
|---|---|
| Class‑AB Output Power (VDD=8.5 V, 4 Ω) | 2 × 9.0 W |
| Supply Voltage Range | -0.3 V to 9.3 V |
| Over‑Current Protection Threshold | 5 A |
| Startup Voltage Threshold (VUVLH) | 2.3 V |
| Shutdown Voltage Threshold (VUVLL) | 2.2 V |
| Power‑On Startup Time (tSTUP) | 280 ms |
| Typical Efficiency (Class‑D, 4 Ω load) | ≈87 % |
Typical operation is specified for VDD between 3.0 V and 9.0 V.
The HT8697 can operate in Class‑D mode for high efficiency and in Class‑AB mode for lower EMI.