SparkFun – Audio Amplifier Kit – STA540

SparkFun: KIT-09612

Description: This is a stereo amplifier kit designed to make use of the STA540 power amplifier IC. Once this kit is completed you have a fully functional, two-channel audio amplifier, complete with a standby switch, volume control and indicator LEDs. The kit also includes a 6400BG heatsink for the STA540 to dissipate any damaging heat.

In this kit, the STA540 is configured as a dual bridge amplifier capable of delivering up to 2x 38W (4O at 18V). Power supplied to the kit directly powers the STA540 and should be within 8 to 22V.

This kit comes as a bag of parts, you’ll need to solder everything to the PCB. All components are through-hole, so it shouldn’t be too difficult; but this kit is a bit more complex than our other through-hole kits.

Kit Includes:

• 1 x STA540 Audio Amplifier Kit PCB
• 1 x STA540 Dual/Quad Power Amplifier
• 1 x 6400BG Heatsink
• 1 x LM358 Op Amp
• 3 x LED – Basic Red
• 1 x SPDT Mini Power Switch
• Resistors:
  5 x 10K Ohm
  3 x 1.0K Ohm
  2 x 47k Ohm
  2 x 100k Ohm
  2 x 10k Giant Trimpot
• Capacitors:
  1 x 0.1uF-50V-20%
  1 x 100uF – 25V
  4 x 0.47uF-25V
  2 x 10pF – 200V – 5%
  3 x 1uF – 50V – -20,+80%
  1 x 1000uF/25V
• 5 x 2-Pin Screw Terminal – 3.5mm
• 4 x Nylon Round Female Standoff
• 5 x Phillips Screw with 4-40 Thread
• 1 x #4-40 Hex Nut

Don Luc