bytecod3/audio-amp-breakout-board1Class AB audio amplifier breakout board with TDA2030
Audio amp is an open-source printed circuit board by bytecod3, from the bytecod3/audio-amp-breakout-board repository on GitHub. It is a 2-layer board of 41.1 × 25.9 mm with 19 parts on 12 nets, routed with 165 tracks and 12 vias.
It is built around the TDA2030. Its parts include 7 resistors, 4 capacitors, 3 connectors, 2 diodes and 1 IC. It belongs with the audio and music boards of this library.
The amplifier shown below uses the very versatile monolithic IC TDA2030 audio amplifier to amplify the audio input from a 3.5mm Jack to power a subwoofer. It delivers an output of 12W for 4 Ohm speaker and 8W for a 8 Ohm speaker.
From the AUDIO_IN input, RV1 is a volume control knob. The amplifier is DC coupled with C1. C1 and R1 form a high pass filter network to allow high freq signals to be amplified.
TDA2030 is powered with 12V VCC. The 1N4001 Diode is a reverse protection component to prevent the capacitors CP1 and C3 from getting damaged. R2 is a potential divider to bias the IC.
CP1, C3 and C2 are noise filters.
The gain for this circuit is set by R5 and R4 and is given by: -R5/R4, which in this case gives 25.6 dB.
The series network formed by R7 and C4 is a Zobel network used to correct some of the internal amplifier inefficiencies.
There are ground copper fills on both the front and back copper sides to drive the noise to ground and prevent background hissing
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R5 |
| 2 | 0.1uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C3, C4 |
| 2 | 4.7k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4, R6 |
| 1 | 10R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 1 | 12V_IN | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | 1N4001 | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D1 |
| 1 | 2.2uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C1 |
| 1 | 22uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C2 |
| 1 | AUDIO_IN | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | CP1_Small | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | 100uF1 |
| 1 | LED | LED_THT:LED_D3.0mm | D2 |
| 1 | R_POT | Potentiometer_THT:Potentiometer_Alps_RK09Y11_Single_Horizontal | RV1 |
| 1 | SPK | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | TDA2030 | Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical | U1 |
It measures 41.1 × 25.9 mm and has 2 copper layers, 1.6 mm thick.
19 parts, built around the TDA2030. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the bytecod3/audio-amp-breakout-board repository on GitHub, at the commit this page was made from: the board is audio-amp/audio-amp.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask bytecod3 before reusing the design.
Megamann77/UW_Lautsprecher_for_OTS_Mic
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Manideep136/Audio-Amplifier
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