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

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

<p>Pump up the volume with this 20W stereo amplifier! This slim little 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.<br /><br />We like the MAX9744 amplifier at the heart of this board because its very easy to use, but it also has both analog and digital volume control capability. Use a single 1KΩ pot (we include one) to adjust volume analog-style. Or hook it up to your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.<br /><br />Some great stats about the MAX9744:</p><ul><li>Power from 4.5V-14V DC voltage</li><li>Up to 93% efficient (88-93% typical)</li><li>20mA quiescent current (or put into shutdown for 1uA quiescent)</li><li>Up to 29.5dB max gain</li><li>Use DC or AC coupled line-level input, up to 3Vpp</li><li>Filterless Spread-Spectrum Modulation Lowers<br />Radiated RF Emissions from Speaker Cables</li><li>20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)</li><li>Low 0.04% THD+N</li><li>Integrated Click-and-Pop Suppression</li><li>Short-Circuit and Thermal-Overload Protection</li></ul><p>We took this lovely chip and wrapped it up into a breakout for you, with polarity-protection, jacks and terminal blocks, i2c level shifting, and a spot to solder in a volume pot.<br /><br />Each order comes with one MAX9744 breakout board with all surface-mount parts fully assembled and tested. We also include 3 x 2pin and 1 x 3pin terminal blocks, a 470uF power filter capacitor and 1KΩ trim pot. To use this board, a little soldering is required to attach the terminal blocks and other components, but its fairly easy and expect