The APA2020 is a power amplifier chip from Taiwan semiconductor supplier ON Semiconductor. It is suitable for consumer electronic products such as notebooks, tablets, and smartphones. The chip is powered by a 1.8V supply voltage and provides 1.8W output power at a 4 ohm load and 1.2W output power at an 8 ohm load. The chip integrates depop circuitry and thermal shutdown protection circuitry to reduce pops and clicks noise during power up and when using the shutdown or mute modes and to protect the chip from being destroyed by over-temperature failure. The chip also supports stereo bridge-tied loads (BTL) mode and stereo single-end (SE) mode, both of which can be easily switched by the SE/BTL input control pin signal.
The ANPEC APA2020 is a stereo 2-W audio power amplifier designed for applications such as notebook computers. It operates in either Bridge-Tied Load (BTL) mode for speaker drive or Single-Ended (SE) mode for headphone drive, with modes easily switched via the SE/BTL input control pin.
The device includes integrated depop circuitry to reduce pops and clicks during power-up and shutdown, as well as thermal shutdown protection. It is available in various 24-pin power packages including SOP and TSSOP-P.
| Output Power (BTL, 4Ω, THD+N<1%) | 1.8 W/Ch |
|---|---|
| Output Power (BTL, 8Ω, THD+N<1%) | 1.2 W/Ch |
| Operating Ambient Temperature Range | -40 to +85 °C |
The APA2020 supports both Bridge-Tied Load (BTL) mode for speaker drive and Single-Ended (SE) mode for headphone drive.
Yes, it features integrated depop circuitry and thermal shutdown protection to prevent damage from over-temperature failure.
The supply current remains at 0.5 mA (typical) when the device is in shutdown mode.