Product description
Mini amplifier with speaker for breadboard. EK033 is a SMD soldering kit from Electrokit. Based on the class-D amplifier PAM8302A (which is a welcome update to the classic LM386). Comes with all the necessary components to build a simple, low-consumption audio amplifier with integrated speaker. The solution is Breadboard friendly and is particularly suitable for teaching, prototyping and experimentation.
The kit comes with 8 SMD components and a 23 mm speaker. A trimpotentiometer for adjusting the gain is located on the back of the board. External volume control can be implemented with a potentiometer or a fixed resistor in series with the input signal. The shutdown (SD) function enables low current mode by connecting the signal to GND.
Features:
- Analogue Class-D amplifier with low power consumption
- Drive voltage: 2 - 5.5 V DC
- Low current consumption: 4 mA in sleep mode and 0.5 mA in shutdown
- Max output power: 2.5 W (depending on supply and load)
- Preset gain via trim potentiometer
- Possibility of signal mixing via passive components
- Shutdown function for power saving mode
- Breadboard friendly (2.54 mm pitch)
Specifications:
- Speaker: Ø23 mm, 8 Ω, 0.1 W
- Dimensions (PCB): 23.5 × 29 mm
- Mounting: SMD components, hole-mounted (THT) speaker and pin header
- SMD components footprint: 0603 and 0805
SMD components included:
- PAM8302A amplifier circuit
- Capacitors: 1 µF (x2), 10 µF (x1)
- Resistors: 10 kΩ (x1), 100 Ω (x2)
- Trim potentiometer: 10
