APA2120/1 is a stereo 2W audio power amplifier with features including low operating current, high PSRR, 32 steps volume adjustable, short circuit protection, etc.
The ANPEC APA2120/2121 is a monolithic integrated circuit providing precise DC volume control for stereo bridged (BTL) or single-end (SE) audio power amplifiers. The device supports 32 steps of volume adjustment via a DC voltage input and includes features such as low operating current, short-circuit protection, and thermal shutdown to ensure reliable operation in portable audio systems like notebook PCs and LCD monitors.
| Supply Voltage Range | -0.3 to 6 V |
|---|---|
| Operating Ambient Temperature | -40 to 85 °C |
| Supply Current (Shutdown Mode) | 50 µA |
| Output Differential Voltage | 5 mV |
The device allows two output modes: Bridge-Tied Loads (BTL) mode for speaker drive and Single-End (SE) mode for headphone drive.
The volume is adjustable in 32 steps using a DC voltage input ranging from 0V to 3.54V.
The supply current in shutdown mode is 50 µA when SE/BTL is at 5V.