Loading... Please wait...

About BUILDCIRCUIT

BuildCircuit is an online store for selling electronics kits and components related to Arduino, Raspberry Pi, etc. We operate from Sydney, Australia.

We design and sell basic electronic kits and Arduino modules for all electronics enthusiasts.

hello@buildcircuit.com.au

Stereo 3.7W Class D Audio Amplifier - MAX98306

US $9.92
SKU:
ADA-987
Shipping:
Calculated at checkout
Current Stock:
Out of Stock
Out of Stock
This product is shipped from Sydney, Australia. Worldwide shipping available- we ship to USA, Canada, New Zealand, UK, EU and Non-EU countries.
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 8Ω speaker at over a Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot.

 

The inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the R- and L- to ground. The outputs are "Bridge Tied" - that means they connect directly to the outputs, no connection to ground. The output is a 360KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output into another amplifier, it should drive the speakers directly. 
Comes with a fully assembled and tested breakout board with 1.0uF input capacitors. We also include header to plug it into a breadboard, 3.5mm screw-terminal blocks so you can easily attach/detach your speakers, and a 2x4 header + jumper to change the amplifier gain on the fly. You will be ready to rock in 15 minutes! Speakers are not included, use any 3ohm or greater impedance speakers. 
  • Output Power: 3.7W at 3Ω, 10% THD, 1.7W at 8Ω, 10% THD, with 5V Supply
  • Passes EMI limit unfiltered with up to 12 inches (30 cm) of speaker cable
  • High 83dB PSRR at 217Hz
  • Spread-Spectrum Modulation and Active Emissions Limiting
  • Five pin-selectable gains: 6dB, 9dB, 12dB, 15dB and 18dB. Select with a jumper or by setting the G and G' breakout pins (see schematic for breakout board showing gain pin settings for details)
  • Excellent click-and-pop suppression
  • Thermal and short-circuit/over-current protection
  • Low current draw: 2mA quiescent and 10uA in shutdown mode
     
    Technical details: 

    Dimensions (without 0.1" header):

    • Length:28.25mm/1.11in
    • Width:24.15mm/0.95in
    • Height:3.03mm/0.12in
    • Weight:2.33g 
     
    Package Includes: 1 x Stereo 3.7W Class D Audio Amplifier - MAX98306

Product Reviews

As we are getting few reviews for our products, we are displaying feedback from our store on Ebay. Please leave your feedback if you purchase a product from our store. Click on the image below to see all the recent feedback

Write Review

This product hasn't received any reviews yet. Be the first to review this product!

Information about shipping

BuildCircuit is a trustworthy online store established in Sydney, Australia. We have been maintaining our quick shipping service since we started the store in Turku, Finland(in 2012).

Shipping information for international customers

We ship our products to more than 45 countries using Australia Post. Our regular customers are from the USA, Canada and Europe. We are currently using four different shipping methods to ship the orders to international destinations. We request you to select 'Standard Post' or 'Registered Post' while checking out so that you can receive your package quickly.

We usually ship your orders within 1-2 days. Small orders are usually processed and shipped on the same day.

Shipping information for Australian customers

All the orders from Australia are shipped on the next day at 9.00AM. Orders with Express Australia Post are also shipped on the next day if your order is placed before 1.00PM. We provide tracking code for Standard, Registered and Express Post orders only.

Australia Post has never lost any package since we started our business in Ausralia. So, we request you all to buy with confidence.

Are we reliable ? How to know we are genuine sellers ? How is your payment safe ?

1. If you make a payment via Paypal and if we don't ship, you can open a case on Paypal and ask for refund. Paypal will be on your side and they will make full refund.

2. We have been selling on Ebay also and we are TOP RATED SELLER on Ebay. Please check our store: http://stores.ebay.com.au/buildcircuitstore

3. This is our SSL seal from GeoTrust. Please click on the seal


4. We have a popular blog www.buildcircuit.com and people from all over the world read our posts. We are seriously in the business, therefore, we WILL ship your orders

For International Customers: For registered and express post orders, you will receive a notification on your email after the package is landed in your country. Examples given below:

delivery-landedpost-landed

Find Similar Products by Category

Back to Top