MAX9716EVKIT: Mono 1.4W @ 4Ω, 2.7 ~ 5.5V, Class AB

The MAX9716 evaluation kit (EV kit) is a fully assembled and tested circuit board that uses the MAX9716, a low cost, mono, 1.4W, bridge-tied-load (BTL) audio power amplifier with adjustable gain. Designed to operate from a 2.7V to 5.5V DC power supply, the EV kit is capable of delivering 1.4W into a 4Ω load with less than 1% THD+N.

The EV kit can be used to evaluate the MAX9717A/B/C/D. To evaluate the MAX9717A with the EV kit, replace the MAX9716 IC with a MAX9717A. To evaluate the MAX9717B/C/D with the EV kit, replace the MAX9716 IC with a MAX9717B/C/D, remove resistors R1 and R2, and short the R1 pads.

The MAX9716/MAX9717 audio power amplifiers are ideal for portable audio devices with internal speakers. Bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality audio reproduction. Both devices deliver 1.4W continuous power into a 4Ω load with less than 1% Total Harmonic Distortion (THD) while operating from a single +5V supply. With an 8Ω load, both devices deliver 1W continuous power. These devices also deliver 350mW continuous power into an 8Ω load while operating from a single +3.0V supply. The devices are available as adjustable gain amplifiers (MAX9716/MAX9717A) or with internally fixed gains of 6dB, 9dB, and 12dB (MAX9717B/MAX9717C/MAX9717D), reducing component count.