# Copilot v4 DogFooding - Audio Amplifier ## Description I'm building an audio amplifier. These are the project requirements: - Type of Amplifier: Class D (for energy efficiency). - Input Source: Line-level input from a standard audio source, e.g., mobile phone or PC. - Output Power: 10W per channel (for a stereo setup). - Number of Channels: 2 (stereo output). - Distortion: Total Harmonic Distortion (THD) of less than 0.1% at full power. - Frequency Response: 20Hz to 20kHz. - Power Supply: Operate from a single 12V DC source. - Protection: Over-current and thermal protection for the amplifier IC. - Connectivity: Standard 3.5mm audio jack for input and screw terminals for speaker outputs. - Volume Control: A physical potentiometer for volume control. - Indicator: An LED indicator that shows power ON status. - Size Constraints: PCB size should not exceed 100mm x 100mm. Consider every requirement individually when answering any question ## Project Details - **Owner:** nico - **Created:** 8/21/2023 - **Last Updated:** 10/12/2023 - **Visibility:** Public - **Stars:** 2 ## Key Components ### U1 — [TPA3118D2DAPR](https://www.flux.ai/adrian95/tpa3118d2dapr~3ml.md) - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftpa3118d2 - Part Type: Integrated Circuit - Manufacturer Part Number: TPA3118D2DAPR - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~FAULTZ~ [pin 3] - ~SDZ~ [pin 2] - AM0 [pin 15] - AM1 [pin 14] - AM2 [pin 13] - AVCC [pin 17] - BSNL [pin 20] - BSNR [pin 26] - BSPL [pin 24] - BSPR [pin 30] - GAIN/SLV [pin 8] - GND [pin 9] - GND [pin 25] - GND [pin 22] - GND [pin 28] - GVDD [pin 7] - LINN [pin 11] - LINP [pin 10] - MODSEL [pin 1] - MUTE [pin 12] - OUTNL [pin 21] - OUTNR [pin 27] - OUTPL [pin 23] - OUTPR [pin 29] - PLIMIT [pin 6] - PVCC [pin 32] - PVCC [pin 31] - PVCC [pin 18] - PVCC [pin 19] - RINN [pin 5] - RINP [pin 4] - SYNC [pin 16] - Thermal_PAD [pin 33] ### U2 — [TPS25940LRVCR](https://www.flux.ai/adrian95/tps25940lrvcr~ojd.md) - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps25940.pdf - Manufacturer Part Number: TPS25940LRVCR - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~FLT [pin 20] - DEVSLP [pin 1] - DVDT [pin 18] - EN [pin 14] - EP [pin 21] - GND [pin 16] - ILIM [pin 17] - IMON [pin 19] - IN_1 [pin 9] - IN_2 [pin 10] - IN_3 [pin 11] - IN_4 [pin 12] - IN_5 [pin 13] - OUT_1 [pin 4] - OUT_2 [pin 5] - OUT_3 [pin 6] - OUT_4 [pin 7] - OUT_5 [pin 8] - OVP [pin 15] - PGOOD [pin 2] - PGTH [pin 3] ### U3 — [TPS259251DRCT](https://www.flux.ai/adrian95/tps259251drct~wc0.md) - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps25925 - Manufacturer Part Number: TPS25925x **Pins:** - dV/dT [pin 1] - EN/UVLO [pin 2] - GND [pin 11] - ILIM [pin 10] - NC [pin 9] - OUT [pin 8] - OUT [pin 7] - OUT [pin 6] - VIN [pin 3] - VIN [pin 5] - VIN [pin 4] ### U4 — [PT2313](https://www.flux.ai/jecstronic/pt2313~eia.md) - Datasheet URL: https://html.alldatasheet.com/html-pdf/1137182/TITAN/PT2313/173/1/PT2313.html - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: PT2313 - Manufacturer Name: Shenzhen **Pins:** - AGND [pin 3] - BIN_L [pin 18] - BIN_R [pin 20] - BOUT_L [pin 19] - BOUT_R [pin 21] - CLK [pin 28] - DATA [pin 27] - DGND [pin 26] - LFOUT [pin 25] - LIN [pin 16] - LIN1 [pin 15] - LIN2 [pin 14] - LIN3 [pin 13] - LOUD_L [pin 12] - LOUD_R [pin 8] - LOUT [pin 17] - LROUT [pin 23] - REF [pin 1] - RFOUT [pin 24] - RIN [pin 6] - RIN1 [pin 11] - RIN2 [pin 10] - RIN3 [pin 9] - ROUT [pin 7] - RROUT [pin 22] - TREB_L [pin 4] - TREB_R [pin 5] - VDD [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/nico/copilot-v4-dogfooding-audio-amplifier~f3](https://www.flux.ai/nico/copilot-v4-dogfooding-audio-amplifier~f3).* --- *Generated from [https://www.flux.ai/nico/copilot-v4-dogfooding-audio-amplifier~f3](https://www.flux.ai/nico/copilot-v4-dogfooding-audio-amplifier~f3)*