User manual for the IDCHIP AD2018A 5.5 W ultra‑low EMI audio power amplifier with AB/D mode selection and thermal protection.
The AD2018A is a single‑channel audio power amplifier designed for portable systems. It offers ultra‑low EMI operation without external filters, selectable AB or D class modes, and built‑in over‑temperature shutdown.
The manual provides functional descriptions, pin definitions, electrical limits, typical application circuits, ordering information, and guidelines for component selection and PCB layout to achieve low distortion and high efficiency. This manual is written in Chinese.
| Maximum Output Power (2 Ω, 5 V) | 5.5 W |
|---|---|
| Supply Voltage Range | 2.5 V – 7 V |
| Operating Temperature Range | -40 °C – 85 °C |
| Package | ESOP‑8 |
| Shutdown Control Pin (SD) | High‑level shutdown |
| Mode Control Pin (MODE) | High = D class, Low = AB class |
The AD2018A can deliver up to 5.5 W into a 2 Ω BTL load when powered at 5 V.
The MODE pin selects the class: a high level selects D‑class operation, while a low level selects AB‑class.
The device operates from 2.5 V up to 7 V supply voltage.
Yes, it includes an automatic over‑temperature shutdown mechanism.