Adafruit 1752 Development Board Accessories (Audio Amplifier, 41mm, 54mm, 2mm, 11g)

• Power From 4.5V-14V Dc Voltage
• Up To 93% Efficient (88-93% Typical)
• 20Ma Quiescent Current (Or Put Into Shutdown For 1Ua Quiescent)
• Up To 29.5Db Max Gain
• Use Dc Or Ac Coupled Line-Level Input, Up To 3Vpp
• Filterless Spread-Spectrum Modulation Lowers
• 20W Stereo Output (4&Amp;Omega;, Vdd = 12V, Thd+N = 10%)
• Low 0.04% Thd+N
• Integrated Click-And-Pop Suppression
• Short-Circuit And Thermal-Overload Protection

This 20W stereo amplifier is a slim board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Power it with 5-12VDC using the onboard DC power jack and plug stereo line level into the 3.5mm stereo headphone jack and jam out with ease. Since it's class D, its completely cool-running, no heat sinks are required and it's extremely efficient - up to 93% efficiency makes it great for portable or battery powered rigs. The MAX9744 amplifier is very easy to use and has both analog and digital volume control capability. Use a single 1KΩ pot (included) to adjust volume analog-style or hook it up to a microcontroller and send I2C commands to set 64-steps of volume amplification. The MAX9744 has been mounted into a breakout, with polarity-protection, jacks and terminal blocks, i2c level shifting, and a spot to solder in a volume potentiometer. Each order comes with one MAX9744 breakout board with all surface-mount parts fully assembled and tested, 3 x 2pin and 1 x 3pin terminal blocks, a 470uF power filter capacitor and 1KΩ trim potentiometer. Note: To use this board, a little soldering is required to attach the terminal blocks and other components, but its fairly easy and expect it should take less than 15 minutes.