21ics Diodes Incorporated introduces the Class D audio amplifier PAM8407, which integrates advanced thirty-two level volume control to reduce external component count in a variety of stereo speaker applications such as computers, docking stations and wireless speakers. .
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The amplifier can drive dual 4Ω speaker loads from a 5V supply and delivers 3W per channel, giving designers a simple up/down volume key control design and high-quality audio reproduction. The device uses a fully differential input mode to ensure low noise performance, high power supply rejection ratio, and ultra-low total harmonic distortion characteristics (THD+N).
This Class D amplifier features a filterless output structure that reduces the number of external components, saves space, improves EMI performance, and ensures low quiescent current.
The PAM8407 is available in a low pin count SO-16 package with low external circuit requirements and up to 87% efficiency, making it ideal for portable applications. Offering a wide operating voltage range from 2.5V to 6V, the device is ideal for four alkaline battery designs.
This amplifier has a range of protection against loss, including automatic recovery short circuit protection, undervoltage lockout and over temperature protection.
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