This tiny audio amplifier is based on the Texas Instruments TPA2005D1. Its efficient class-D operation means low heat and long battery life. It can drive an 8-Ohm speaker at up to 1.4 Watts; it won't shake a stadium, but it will provide plenty of volume for your audio projects.
The fully-differential inputs are safe for floating audio signals such as from our MP3 Shield, and can also be connected to ground-referenced signals as well. A shutdown input is provided to save power when the amplifier is not being used, and a solder jumper and header are provided to connect a volume-control potentiometer (not included).
The amplifier's class-D design outputs a 250kHz PWM-like signal that is restored to an analog voltage in the speaker's coil. This is what makes the amplifier so efficient, but because of the switching frequency, you should keep the amplifier as close to the speaker as possible to minimize possible interference.
Extremely efficient class-D amplifier
1.4W into 8 Ohms
2.5V to 5.5V supply
Fully differential audio inputs, can be ground-referenced as well
Shutdown input with pullup and LED-follows-shutdown circuitry
PTH pads provided to change gain resistors if desired (see datasheet for details)
Solder jumper and header allow addition of a 10k volume control potentiometer (not included)
This is a simple Op Amp breakout board, set up as a 2-stage amplifier with a gain of 100 (gain of 10 for each stage). The on-board trim pot sets the signal level between the stages, not the feedback path. The bandwidth is set to 15.9kHz by a pair of feedback capacitors, or over 100kHz with the caps removed. The LMV358 opamp can source up to 160mA...
This breakout board is the ultimate companion for the VLSI VS1053B DSP codec chip. The VS1053 can decode a wide variety of audio formats such as MP3, AAC, Ogg Vorbis, WMA, MIDI, FLAC, WAV (PCM and ADPCM). It can also be used to record audio in both PCM (WAV) and compressed Ogg Vorbis. You can do all sorts of stuff with the audio as well such as adjusting...
This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, its incredibly efficient (over 90% efficient when driving an 8O speaker at over a Watt) - making it perfect for...
This new version now has all 5 pins broken out on the connector. We have no idea what USB device you are hooking up to, but if you need to add a miniUSB/USB Mini-B connector to your breadboard - here it is. Also good for an un-regulated, non-limited 5V supply up to 100mA.
This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it lsquo;click rsquo; really well). This button is great for user input on a PCB or a good, big reset button on a breadboard. Breadboard friendly!
Miniature Single Pull Single Throw switches. These are high quality Omron type B3F momentary on switches. This switch has a very large 13mm tall button. Perfect as an embedded switch behind an enclosure wall. Rated up to 50mA.
PowerBoost 1000C is the perfect power supply for your portable project! With a built-in load-sharing battery charger circuit, you\'ll be able to keep your power-hungry project running even while recharging the battery! This little DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for...
The WTV020SD is a small, simple IC for embedding audio-playback into your next project. These devices are commonly used in childre rsquo;s toys and "talking" retail displays. This breakout board allows you to access the functionality of the WTV020SD to give a voice to your next project.