This datasheet describes the WAYTRONIC WT85711, a 5.0W single-channel audio amplifier supporting switchable AB/Class-D modes with AERC technology.
The WAYTRONIC WT85711 is a high-performance single-channel audio power amplifier capable of delivering up to 5.0W into a 2Ω load at 10% THD+N with a 5V supply. It features a unique Adaptive Edge Rate Control (AERC) technology that provides excellent full-bandwidth EMI suppression without requiring external filters, ensuring compliance with FCC Part 15 Class B standards.
The device supports both AB-class and Class-D operation modes via the MODE pin, offering high efficiency of up to 90% in Class-D mode. It includes built-in protection circuits for over-current, short-circuit, and overheating conditions, as well as low static current consumption (5mA) and a fast startup time. This manual is written in Chinese.
| Output Power (Class-D, 5V, 2Ω) | 5.00W typical at 10% THD+N |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V |
| Efficiency (Class-D) | Up to 90% |
| Static Current | 5mA typical at 5V |
| Power Supply Rejection Ratio (PSRR) | -72dB typical at 217Hz |
The chip supports both AB-class and Class-D operation modes, which can be switched via the MODE pin.
No, it uses a PWM modulation structure without filters to improve efficiency and reduce component count.