# Retro 5.1 Mini Amplifier ## Description Production-intent compact 5.1 Class-D amplifier with 6 × 50 W outputs, stereo RCA, tape loop, optical PCM, Bluetooth, 3.5 mm AUX, dual passive/powered subwoofer support, and an amber retro-style display. ## Project Details - **Owner:** celestialaudio - **Created:** 8/6/2026 - **Last Updated:** 8/6/2026 - **Visibility:** Public ## Key Components ### CAMP_BOOT1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role: Bootstrap - Capacitance: 33nF - Part Type: Non-Polarized Capacitor - Voltage Rating: 25V - Package: SMD_0603_1608Metric - Functional Group: Class-D Amplifiers - Role Details: TPA3255 BST-to-OUT bootstrap capacitor **Pins:** - P1 [pin 1] - P2 [pin 2] ### CAMP_GV1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Functional Group: Class-D Amplifiers - Voltage Rating: 25V - Role Details: TPA3255 GVDD decoupling - Part Type: Non-Polarized Capacitor - Role: Decoupling - Capacitance: 100nF - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### CAMP_IN1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role: Coupling - Package: SMD_0603_1608Metric - Functional Group: Class-D Amplifiers - Part Type: Non-Polarized Capacitor - Capacitance: 1uF - Role Details: DAC-to-TPA3255 differential input AC coupling - Voltage Rating: 25V **Pins:** - P1 [pin 1] - P2 [pin 2] ### CAMP_PV1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Functional Group: Class-D Amplifiers - Role Details: TPA3255 full-bridge PVDD high-frequency decoupling - Voltage Rating: 100V - Part Type: Non-Polarized Capacitor - Capacitance: 1uF - Role: Decoupling - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### CAMP_REF1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Capacitance: 1uF - Part Type: Non-Polarized Capacitor - Role Details: TPA3255 VBG or C_START capacitor - Voltage Rating: 25V - Role: Decoupling - Package: SMD_0603_1608Metric - Functional Group: Class-D Amplifiers **Pins:** - P1 [pin 1] - P2 [pin 2] ### CAMP_VDD1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Voltage Rating: 25V - Role Details: TPA3255 VDD/rail decoupling - Capacitance: 10uF - Part Type: Non-Polarized Capacitor - Functional Group: Class-D Amplifiers - Role: Decoupling - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### CBSTP1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Functional Group: Power Entry & Rails - Package: SMD_0603_1608Metric - Role Details: MP4572 BST-to-SW capacitor - Part Type: Non-Polarized Capacitor - Capacitance: 100nF - Role: Bootstrap - Voltage Rating: 25V **Pins:** - P1 [pin 1] - P2 [pin 2] ### CBULK1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role: Bulk Capacitor - Package: SMD_0603_1608Metric - Functional Group: Power Entry & Rails - Voltage Rating: 63V - Part Type: Non-Polarized Capacitor - Capacitance: 1000uF - Role Details: 48 V rail bulk bank; six parts provide 6000 uF total **Pins:** - P1 [pin 1] - P2 [pin 2] ### CIN12 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Functional Group: Power Entry & Rails - Voltage Rating: 63V - Part Type: Non-Polarized Capacitor - Capacitance: 47uF - Role Details: MP4572 high-voltage input bypass - Role: Input Capacitor - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### CN1 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Manufacturer Name: KANGNEX(康奈克斯电气) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf - Role Details: 14 A-rated two-position spring terminal - Manufacturer Part Number: WJ142V-5.08-2P - Functional Group: Speaker/Line Outputs - JLCPCB Part Class: Extended Part - Role: Speaker Output - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P - Part Type: Spring Clamp System Terminal Block - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - LCSC Part Number: C153288 **Pins:** - 1 [pin 1] - 2 [pin 2] ### CN2 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Part Type: Spring Clamp System Terminal Block - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - LCSC Part Number: C153288 - Role Details: 14 A-rated two-position spring terminal - Manufacturer Part Number: WJ142V-5.08-2P - JLCPCB Part Class: Extended Part - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P - Role: Speaker Output - Functional Group: Speaker/Line Outputs - Manufacturer Name: KANGNEX(康奈克斯电气) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### CN3 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf - Manufacturer Name: KANGNEX(康奈克斯电气) - Role Details: 14 A-rated two-position spring terminal - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P - JLCPCB Part Class: Extended Part - Manufacturer Part Number: WJ142V-5.08-2P - Role: Speaker Output - LCSC Part Number: C153288 - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - Functional Group: Speaker/Line Outputs - Part Type: Spring Clamp System Terminal Block **Pins:** - 1 [pin 1] - 2 [pin 2] ### CN4 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Functional Group: Speaker/Line Outputs - Manufacturer Name: KANGNEX(康奈克斯电气) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf - Part Type: Spring Clamp System Terminal Block - LCSC Part Number: C153288 - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - Manufacturer Part Number: WJ142V-5.08-2P - Role: Speaker Output - Role Details: 14 A-rated two-position spring terminal - JLCPCB Part Class: Extended Part - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P **Pins:** - 1 [pin 1] - 2 [pin 2] ### CN5 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Manufacturer Part Number: WJ142V-5.08-2P - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P - JLCPCB Part Class: Extended Part - Functional Group: Speaker/Line Outputs - Part Type: Spring Clamp System Terminal Block - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - Role Details: 14 A-rated two-position spring terminal - LCSC Part Number: C153288 - Manufacturer Name: KANGNEX(康奈克斯电气) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf - Role: Speaker Output **Pins:** - 1 [pin 1] - 2 [pin 2] ### COUT12 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Package: SMD_0603_1608Metric - Role: Output Capacitor - Part Type: Non-Polarized Capacitor - Role Details: MP4572 output capacitor bank - Capacitance: 22uF - Functional Group: Power Entry & Rails - Voltage Rating: 25V **Pins:** - P1 [pin 1] - P2 [pin 2] ### CSPK1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role Details: TPA3255 BTL differential LC filter capacitor - Package: SMD_0603_1608Metric - Role: Output Filter - Voltage Rating: 100V - Capacitance: 1uF - Functional Group: Class-D Amplifiers - Part Type: Non-Polarized Capacitor **Pins:** - P1 [pin 1] - P2 [pin 2] ### F1 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001~h9n.md) - Role Details: 8 A time-delay blade fuse position; sized from 7.5 A peak budget - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Manufacturer Part Number: 178.6164.0001 - Functional Group: Power Entry & Rails - Part Type: Fuse - Current Rating: 15A - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### JDBG1 — [TSW-110-07-T-S](https://www.flux.ai/cherepanyadima/tsw-110-07-t-s~e2.md) - Role: Debug Connector - Datasheet URL: https://suddendocs.samtec.com/catalog_english/tsw_th.pdf - Role Details: SWD programming and production test access - Manufacturer Part Number: TSW-110-07-T-S - Manufacturer Name: Samtec - Part Type: Connector - Functional Group: MCU/UI **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] - 06 [pin 06] - 07 [pin 07] - 08 [pin 08] - 09 [pin 09] - 10 [pin 10] ### JDC1 — [XT60PW-M](https://www.flux.ai/chisf/xt60pw-m~tj.md) - Datasheet URL: https://www.snapeda.com/parts/XT60PW-M/AMASS/datasheet/ - Functional Group: Power Entry & Rails - Role: Power Input - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: AMASS - Manufacturer Part Number: XT60PW-M - Role Details: 30 A-rated locking connector for certified 48 V adapter **Pins:** - Neg [pin 2] - Pos [pin 1] ### JOPT1 — [825433-3](https://www.flux.ai/lcsc/825433-3~ct7h.md) - Role: Connector - Functional Group: Optical & Bluetooth - LCSC Part Number: C306148 - Product Info Url: https://lcsc.com/product-detail/Others_TE-Connectivity_825433-3_TE-Connectivity-825433-3_C306148.html - Package or Case Code: HDR-TH_3P-P2.54-V-M - JLCPCB Part Class: Extended Part - Manufacturer Name: TE Connectivity(泰科电子) - Manufacturer Part Number: 825433-3 - Part Type: Pin Headers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151650_TE-Connectivity-825433-3_C306148.pdf - Role Details: S/PDIF_RX interface: 3V3, GND, receiver logic output to DIR9001 RXIN **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### JSPK1 — [WJ142V-5.08-2P](https://www.flux.ai/lcsc/wj142v-5p08-2p~dlng.md) - Product Info Url: https://lcsc.com/product-detail/Terminal-Blocks_WJ142V-5-08-02P-14-00A_C153288.html - LCSC Part Number: C153288 - Role Details: 14 A-rated two-position spring terminal - Part Type: Spring Clamp System Terminal Block - Package or Case Code: CONN-TH_2P-P5.08_WJ142V-5.08-2P - JLCPCB Part Class: Extended Part - Functional Group: Speaker/Line Outputs - Manufacturer Part Number: WJ142V-5.08-2P - Role: Speaker Output - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912251711_Ningbo-Kangnex-Elec-WJ142V-5-08-2P_C153288.pdf - Manufacturer Name: KANGNEX(康奈克斯电气) **Pins:** - 1 [pin 1] - 2 [pin 2] ### LPWR1 — [Generic Inductor](https://www.flux.ai/jharwinbarrozo/generic-inductor~wlv.md) - Inductance: 15uH - Functional Group: Power Entry & Rails - Role: Power Inductor - Role Details: MP4572 buck output inductor - Part Type: Inductor - Current Rating: 3A - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### LSPK1 — [Generic Inductor](https://www.flux.ai/jharwinbarrozo/generic-inductor~wlv.md) - Role: Output Filter - Inductance: 10uH - Part Type: Inductor - Role Details: TPA3255 BTL output LC filter inductor for 4-8 ohm loads - Saturation Current: 10A - Functional Group: Class-D Amplifiers - Current Rating: 8A - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### RAMP_FREQ1 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Part Type: Resistor - Functional Group: Class-D Amplifiers - Tolerance: 1% - Resistance: 30kΩ - Role Details: TPA3255 nominal 450 kHz master frequency - Role: Frequency Set - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### RAMP_OC1 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Role Details: TPA3255 cycle-by-cycle overcurrent setting for 4 ohm loads - Tolerance: 5% - Part Type: Resistor - Package: SMD_0603_1608Metric - Resistance: 22kΩ - Role: Protection - Functional Group: Class-D Amplifiers **Pins:** - P1 [pin 1] - P2 [pin 2] ### RFBB12 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Part Type: Resistor - Role: Feedback Divider - Tolerance: 1% - Resistance: 2.94kΩ - Role Details: UPWR1 12 V feedback bottom calculated from 0.8 V reference - Functional Group: Power Entry & Rails - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### RFBB5 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Functional Group: Power Entry & Rails - Part Type: Resistor - Tolerance: 1% - Role: Feedback Divider - Resistance: 7.68kΩ - Package: SMD_0603_1608Metric - Role Details: UPWR2 5 V feedback bottom per datasheet **Pins:** - P1 [pin 1] - P2 [pin 2] ### RFBT1 — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Package: SMD_0603_1608Metric - Resistance: 41.2kΩ - Tolerance: 1% - Functional Group: Power Entry & Rails - Role: Feedback Divider - Part Type: Resistor - Role Details: MP4572 feedback top **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [OPA1656IDR](https://www.flux.ai/jecstronic/opa1656idr~w3j.md) - Role Details: Input/record/sub output buffer and converter interface - Functional Group: Analog Inputs/Tape Loop,DSP/ADC/DAC,Speaker/Line Outputs - Manufacturer Name: Texas Instruments - Part Type: Operational Amplifier (OP-AMP) - Role: Audio Buffer - Manufacturer Part Number: OPA1656IDR - Datasheet URL: https://www.ti.com/lit/ds/symlink/opa1655.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - -IN [pin 2] - +IN [pin 3] - NC [pin 1] - NC [pin 5] - NC [pin 8] - OUT [pin 6] - V- [pin 4] - V+ [pin 7] ### U2 — [OPA1656IDR](https://www.flux.ai/jecstronic/opa1656idr~w3j.md) - Manufacturer Name: Texas Instruments - Functional Group: Analog Inputs/Tape Loop,DSP/ADC/DAC,Speaker/Line Outputs - Role Details: Input/record/sub output buffer and converter interface - Role: Audio Buffer - Part Type: Operational Amplifier (OP-AMP) - Manufacturer Part Number: OPA1656IDR - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/lit/ds/symlink/opa1655.pdf **Pins:** - -IN [pin 2] - +IN [pin 3] - NC [pin 1] - NC [pin 5] - NC [pin 8] - OUT [pin 6] - V- [pin 4] - V+ [pin 7] ### U3 — [OPA1656IDR](https://www.flux.ai/jecstronic/opa1656idr~w3j.md) - Part Type: Operational Amplifier (OP-AMP) - Role Details: Input/record/sub output buffer and converter interface - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/opa1655.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role: Audio Buffer - Manufacturer Part Number: OPA1656IDR - Functional Group: Analog Inputs/Tape Loop,DSP/ADC/DAC,Speaker/Line Outputs **Pins:** - -IN [pin 2] - +IN [pin 3] - NC [pin 1] - NC [pin 5] - NC [pin 8] - OUT [pin 6] - V- [pin 4] - V+ [pin 7] ### UAMP1 — [TPA3255DDVR](https://www.flux.ai/lcsc/tpa3255ddvr~j90q.md) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Audio-Power-OpAmps_Texas-Instruments-Texas-Instruments-TPA3255DDVR_C468240.html - Manufacturer Part Number: TPA3255DDVR - Role: Power Amplifier - Role Details: Front-left/front-right 50 W test-capable stereo BTL stage - Manufacturer Name: TI(德州仪器) - Package or Case Code: HTSSOP-44_L14.0-W6.1-P0.64-LS8.1-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121943_Texas-Instruments-TPA3255DDVR_C468240.pdf - Part Type: Audio Power OpAmps - LCSC Part Number: C468240 - Functional Group: Class-D Amplifiers **Pins:** - ~{CLIP_OTW} [pin 21] - ~{FAULT} [pin 19] - ~{RESET} [pin 18] - AVDD [pin 14] - BST_A [pin 44] - BST_B [pin 43] - BST_C [pin 24] - BST_D [pin 23] - C_START [pin 15] - DVDD [pin 11] - FREQ_ADJ [pin 8] - GND [pin 33] - GND [pin 26] - GND [pin 13] - GND [pin 41] - GND [pin 12] - GND [pin 34] - GND [pin 42] - GND [pin 25] - GVDD_AB [pin 1] - GVDD_CD [pin 22] - INPUT_A [pin 5] - INPUT_B [pin 6] - INPUT_C [pin 16] - INPUT_D [pin 17] - M1 [pin 3] - M2 [pin 4] - OC_ADJ [pin 7] - OSC_IOM [pin 9] - OSC_IOP [pin 10] - OUT_A [pin 39] - OUT_A [pin 40] - OUT_B [pin 35] - OUT_C [pin 32] - OUT_D [pin 28] - OUT_D [pin 27] - PVDD_AB [pin 36] - PVDD_AB [pin 37] - PVDD_AB [pin 38] - PVDD_CD [pin 29] - PVDD_CD [pin 31] - PVDD_CD [pin 30] - VBG [pin 20] - VDD [pin 2] ### UAMP2 — [TPA3255DDVR](https://www.flux.ai/lcsc/tpa3255ddvr~j90q.md) - Package or Case Code: HTSSOP-44_L14.0-W6.1-P0.64-LS8.1-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121943_Texas-Instruments-TPA3255DDVR_C468240.pdf - Manufacturer Name: TI(德州仪器) - Role Details: Rear-left/rear-right 50 W test-capable stereo BTL stage - JLCPCB Part Class: Extended Part - Functional Group: Class-D Amplifiers - Product Info Url: https://lcsc.com/product-detail/Audio-Power-OpAmps_Texas-Instruments-Texas-Instruments-TPA3255DDVR_C468240.html - Manufacturer Part Number: TPA3255DDVR - LCSC Part Number: C468240 - Part Type: Audio Power OpAmps - Role: Power Amplifier **Pins:** - ~{CLIP_OTW} [pin 21] - ~{FAULT} [pin 19] - ~{RESET} [pin 18] - AVDD [pin 14] - BST_A [pin 44] - BST_B [pin 43] - BST_C [pin 24] - BST_D [pin 23] - C_START [pin 15] - DVDD [pin 11] - FREQ_ADJ [pin 8] - GND [pin 33] - GND [pin 26] - GND [pin 13] - GND [pin 41] - GND [pin 12] - GND [pin 34] - GND [pin 42] - GND [pin 25] - GVDD_AB [pin 1] - GVDD_CD [pin 22] - INPUT_A [pin 5] - INPUT_B [pin 6] - INPUT_C [pin 16] - INPUT_D [pin 17] - M1 [pin 3] - M2 [pin 4] - OC_ADJ [pin 7] - OSC_IOM [pin 9] - OSC_IOP [pin 10] - OUT_A [pin 39] - OUT_A [pin 40] - OUT_B [pin 35] - OUT_C [pin 32] - OUT_D [pin 28] - OUT_D [pin 27] - PVDD_AB [pin 36] - PVDD_AB [pin 37] - PVDD_AB [pin 38] - PVDD_CD [pin 29] - PVDD_CD [pin 31] - PVDD_CD [pin 30] - VBG [pin 20] - VDD [pin 2] ### UAMP3 — [TPA3255DDVR](https://www.flux.ai/lcsc/tpa3255ddvr~j90q.md) - JLCPCB Part Class: Extended Part - Role Details: Center/passive-sub 50 W test-capable stereo BTL stage - Product Info Url: https://lcsc.com/product-detail/Audio-Power-OpAmps_Texas-Instruments-Texas-Instruments-TPA3255DDVR_C468240.html - Manufacturer Part Number: TPA3255DDVR - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121943_Texas-Instruments-TPA3255DDVR_C468240.pdf - Package or Case Code: HTSSOP-44_L14.0-W6.1-P0.64-LS8.1-BL - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C468240 - Part Type: Audio Power OpAmps - Functional Group: Class-D Amplifiers - Role: Power Amplifier **Pins:** - ~{CLIP_OTW} [pin 21] - ~{FAULT} [pin 19] - ~{RESET} [pin 18] - AVDD [pin 14] - BST_A [pin 44] - BST_B [pin 43] - BST_C [pin 24] - BST_D [pin 23] - C_START [pin 15] - DVDD [pin 11] - FREQ_ADJ [pin 8] - GND [pin 33] - GND [pin 26] - GND [pin 13] - GND [pin 41] - GND [pin 12] - GND [pin 34] - GND [pin 42] - GND [pin 25] - GVDD_AB [pin 1] - GVDD_CD [pin 22] - INPUT_A [pin 5] - INPUT_B [pin 6] - INPUT_C [pin 16] - INPUT_D [pin 17] - M1 [pin 3] - M2 [pin 4] - OC_ADJ [pin 7] - OSC_IOM [pin 9] - OSC_IOP [pin 10] - OUT_A [pin 39] - OUT_A [pin 40] - OUT_B [pin 35] - OUT_C [pin 32] - OUT_D [pin 28] - OUT_D [pin 27] - PVDD_AB [pin 36] - PVDD_AB [pin 37] - PVDD_AB [pin 38] - PVDD_CD [pin 29] - PVDD_CD [pin 31] - PVDD_CD [pin 30] - VBG [pin 20] - VDD [pin 2] ### UBT1 — [BM83SM1-00TB](https://www.flux.ai/silicon-yard/bm83sm1-00tb.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/0591a60cb5cc2b3f4386cadef4a57618739890f1ee7f1745c6f479c1f66912a3.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Microchip - Part Type: Module - Role: Bluetooth Audio - Functional Group: Optical & Bluetooth - Manufacturer Part Number: BM83SM1-00TB - Package or Case Code: Module - Symbol Style: parametric-v1 - Role Details: Certified module in host mode with I2S and UART **Pins:** - ADAP_IN [pin 22] - AIL [pin 12] - AIR [pin 11] - AOHPL [pin 8] - AOHPM [pin 7] - AOHPR [pin 6] - BAT_IN [pin 23] - DM [pin 36] - DMIC_CLK [pin 17] - DMIC1_L [pin 19] - DMIC1_R [pin 18] - DP [pin 37] - DR1 [pin 1] - DT1 [pin 4] - GND_1 [pin 16] - GND_2 [pin 50] - GND_3 [pin EP1] - GND_4 [pin EP2] - LED1 [pin 32] - LED2 [pin 34] - MCLK1 [pin 5] - MICBIAS [pin 15] - MICN1 [pin 13] - MICN2 [pin 9] - MICP1 [pin 14] - MICP2 [pin 10] - P0_0/UART_TX_IND [pin 49] - P0_1 [pin 44] - P0_2 [pin 33] - P0_3 [pin 38] - P0_5 [pin 40] - P0_6 [pin 35] - P0_7 [pin 45] - P1_2/TDI_CPU/SCL [pin 46] - P1_3/TCK_CPU/SDA [pin 47] - P1_6/PWM1 [pin 41] - P2_3 [pin 42] - P2_6 [pin 21] - P2_7 [pin 39] - P3_2 [pin 20] - P3_4/UART_RTS [pin 31] - P3_7/UART_CTS [pin 48] - P8_5/UART_TXD [pin 30] - P8_6/UART_RXD [pin 29] - PWR_(MFB) [pin 26] - RFS1 [pin 2] - RST_N [pin 43] - SCLK1 [pin 3] - SK2_KEY_AD [pin 28] - SKI1_AMB_DET [pin 27] - SYS_PWR [pin 24] - VDD_IO [pin 25] ### UCODEC1 — [PCM3168APAPR](https://www.flux.ai/lcsc/pcm3168apapr~h02c.md) - LCSC Part Number: C529289 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2005151136_Texas-Instruments-PCM3168APAPR_C529289.pdf - Manufacturer Name: TI(德州仪器) - Functional Group: DSP/ADC/DAC - Package or Case Code: TQFP-64_L10.0-W10.0-P0.50-LS12.0-BL-EP - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Codec-ICs_Texas-Instruments-Texas-Instruments-PCM3168APAPR_C529289.html - Manufacturer Part Number: PCM3168APAPR - Part Type: Codec ICs - Role Details: Analog input conversion and six speaker plus powered-sub DAC outputs - Role: Audio Codec **Pins:** - AGNDAD1 [pin 50] - AGNDAD2 [pin 2] - AGNDDA1 [pin 16] - AGNDDA2 [pin 33] - BCKAD [pin 7] - BCKDA [pin 36] - DGND1 [pin 47] - DGND2 [pin 11] - DIN1 [pin 37] - DIN2 [pin 38] - DIN3 [pin 39] - DIN4 [pin 40] - DOUT1 [pin 8] - DOUT2 [pin 9] - DOUT3 [pin 10] - EP [pin 65] - LRCKAD [pin 6] - LRCKDA [pin 35] - MC/SCL/FMT [pin 42] - MDI/SDA/DEMP [pin 43] - MDO/ADR1/MD1 [pin 44] - MODE [pin 48] - MS/ADR0/MD0 [pin 45] - OVF [pin 5] - RST [pin 4] - SCKI [pin 41] - VCCAD1 [pin 49] - VCCAD2 [pin 3] - VCCDA1 [pin 14] - VCCDA2 [pin 34] - VCOMAD [pin 1] - VCOMDA [pin 15] - VDD1 [pin 46] - VDD2 [pin 12] - VIN1– [pin 51] - VIN1+ [pin 52] - VIN2– [pin 53] - VIN2+ [pin 54] - VIN3– [pin 55] - VIN3+ [pin 56] - VIN4– [pin 57] - VIN4+ [pin 58] - VIN5– [pin 61] - VIN5+ [pin 62] - VIN6– [pin 63] - VIN6+ [pin 64] - VOUT1– [pin 32] - VOUT1+ [pin 31] - VOUT2– [pin 30] - VOUT2+ [pin 29] - VOUT3– [pin 28] - VOUT3+ [pin 27] - VOUT4– [pin 26] - VOUT4+ [pin 25] - VOUT5– [pin 24] - VOUT5+ [pin 23] - VOUT6– [pin 22] - VOUT6+ [pin 21] - VOUT7– [pin 20] - VOUT7+ [pin 19] - VOUT8– [pin 18] - VOUT8+ [pin 17] - VREFAD1 [pin 59] - VREFAD2 [pin 60] - ZERO [pin 13] ### UDSP1 — [ADAU1467WBCPZ300](https://www.flux.ai/lcsc/adau1467wbcpz300~pfpy.md) - Functional Group: DSP/ADC/DAC - Package or Case Code: LFCSP-88_L12.0-W12.0-P0.50-BL-EP5.3 - Role Details: Stereo expansion, center generation, sub crossover, volume and trims - JLCPCB Part Class: Extended Part - Manufacturer Part Number: ADAU1467WBCPZ300 - Role: Audio DSP - Manufacturer Name: ADI(亚德诺)/LINEAR(凌特) - LCSC Part Number: C654415 **Pins:** - ~{RESET} [pin 28] - AGND [pin 8] - AUXADC0 [pin 10] - AUXADC1 [pin 11] - AUXADC2 [pin 12] - AUXADC3 [pin 13] - AUXADC4 [pin 14] - AUXADC5 [pin 15] - AUXADC6 [pin 16] - AUXADC7 [pin 17] - AVDD [pin 9] - BCLK_IN0 [pin 73] - BCLK_IN1 [pin 76] - BCLK_IN2 [pin 81] - BCLK_IN3 [pin 84] - BCLK_OUT0 [pin 48] - BCLK_OUT1 [pin 51] - BCLK_OUT2 [pin 56] - BCLK_OUT3 [pin 59] - CLKOUT [pin 27] - DGND [pin 66] - DGND [pin 88] - DGND [pin 36] - DGND [pin 29] - DGND [pin 1] - DGND [pin 45] - DGND [pin 23] - DGND [pin 67] - DGND [pin 21] - DGND [pin 44] - DVDD [pin 65] - DVDD [pin 43] - DVDD [pin 87] - DVDD [pin 24] - EP [pin 89] - IOVDD [pin 37] - IOVDD [pin 68] - IOVDD [pin 22] - IOVDD [pin 46] - IOVDD [pin 2] - LRCLK_IN0/MP10 [pin 74] - LRCLK_IN1/MP11 [pin 77] - LRCLK_IN2/MP12 [pin 82] - LRCLK_IN3/MP13 [pin 85] - LRCLK_OUT0/MP4 [pin 47] - LRCLK_OUT1/MP5 [pin 50] - LRCLK_OUT2/MP8 [pin 55] - LRCLK_OUT3/MP9 [pin 58] - MISO/SDA [pin 38] - MOSI_M/MP1 [pin 33] - MOSI/ADDR1 [pin 40] - MP14 [pin 6] - MP15 [pin 7] - MP6 [pin 53] - MP7 [pin 54] - PGND [pin 18] - PLLFILT [pin 20] - PVDD [pin 19] - SCL_M/SCLK_M/MP2 [pin 34] - SCL2_M/MP24 [pin 30] - SCLK/SCL [pin 39] - SDA_M/MISO_M/MP3 [pin 35] - SDA2_M/MP25 [pin 31] - SDATA_IN0 [pin 75] - SDATA_IN1 [pin 78] - SDATA_IN2 [pin 83] - SDATA_IN3 [pin 86] - SDATA_OUT0 [pin 49] - SDATA_OUT1 [pin 52] - SDATA_OUT2 [pin 57] - SDATA_OUT3 [pin 60] - SDATAIO0/MP16 [pin 72] - SDATAIO1/MP17 [pin 71] - SDATAIO2/MP18 [pin 70] - SDATAIO3/MP19 [pin 69] - SDATAIO4/MP20 [pin 64] - SDATAIO5/MP21 [pin 63] - SDATAIO6/MP22 [pin 62] - SDATAIO7/MP23 [pin 61] - SELFBOOT [pin 42] - SPDIFIN [pin 4] - SPDIFOUT [pin 5] - SS_M/MP0 [pin 32] - SS/ADDR0 [pin 41] - THD_M [pin 79] - THD_P [pin 80] - VDRIVE [pin 3] - XTALIN/MCLK [pin 25] - XTALOUT [pin 26] ### UEE1 — [AT24CS32-SSHM](https://www.flux.ai/kicad-part-library/at24cs32-sshm~hu.md) - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-8869-SEEPROM-AT24CS32-Datasheet.pdf - Role Details: Store volume, trims, input and mode settings - Role: Nonvolatile Memory - Package or Case Code: SOIC-8_3.9x4.9mm_P1.27mm - Manufacturer Part Number: AT24CS32-SSHM - Functional Group: MCU/UI - Manufacturer Name: Microchip Technology Inc. **Pins:** - A0 [pin 1] - A1 [pin 2] - A2 [pin 3] - GND [pin 4] - SCL [pin 6] - SDA [pin 5] - VCC [pin 8] - WP [pin 7] ### UMCU1 — [STM32G0B1R_B-C-E_TxN](https://www.flux.ai/kicad-part-library/stm32g0b1rb-c-etxn~sf4.md) - Role: Control MCU - Role Details: Display, encoder, buttons, settings, audio control and mute sequencing - Package or Case Code: LQFP-64_10x10mm_P0.5mm - Datasheet URL: https://www.st.com/resource/en/datasheet/stm32g0b1rb.pdf - Manufacturer Part Number: STM32G0B1R_B-C-E_TxN - Manufacturer Name: STMicroelectronics NV - Functional Group: MCU/UI **Pins:** - PA0 [pin 17] - PA1 [pin 18] - PA10/UCPD1_DBCC2 [pin 42] - PA11/PA9 [pin 43] - PA12/PA10 [pin 44] - PA13 [pin 45] - PA14 [pin 46] - PA15 [pin 47] - PA2 [pin 19] - PA3 [pin 20] - PA4 [pin 21] - PA5 [pin 22] - PA6 [pin 23] - PA7 [pin 24] - PA8 [pin 36] - PA9/UCPD1_DBCC1 [pin 37] - PB0 [pin 27] - PB1 [pin 28] - PB10 [pin 30] - PB11 [pin 31] - PB12 [pin 32] - PB13 [pin 33] - PB14 [pin 34] - PB15 [pin 35] - PB2 [pin 29] - PB3 [pin 57] - PB4 [pin 58] - PB5 [pin 59] - PB6 [pin 60] - PB7 [pin 61] - PB8 [pin 62] - PB9 [pin 63] - PC0 [pin 13] - PC1 [pin 14] - PC10 [pin 64] - PC11 [pin 1] - PC12 [pin 2] - PC13 [pin 3] - PC14 [pin 4] - PC15 [pin 5] - PC2 [pin 15] - PC3 [pin 16] - PC4 [pin 25] - PC5 [pin 26] - PC6 [pin 38] - PC7 [pin 39] - PC8 [pin 48] - PC9 [pin 49] - PD0 [pin 50] - PD1 [pin 51] - PD2 [pin 52] - PD3 [pin 53] - PD4 [pin 54] - PD5 [pin 55] - PD6 [pin 56] - PF0 [pin 10] - PF1 [pin 11] - PF2 [pin 12] - VBAT [pin 6] - VDD [pin 8] - VDDIO2 [pin 41] - VREF+ [pin 7] - VSS [pin 40] - VSS [pin 9] ### UMUXL — [ADG1408YRUZ](https://www.flux.ai/kicad-part-library/adg1408yruz~zi.md) - Role: Analog Multiplexer - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ADG1408_1409.pdf - Role Details: Select RCA, AUX or Tape Play left channel - Functional Group: Analog Inputs/Tape Loop - Manufacturer Part Number: ADG1408YRUZ - Package or Case Code: TSSOP-16_4.4x5mm_P0.65mm **Pins:** - A0 [pin 1] - A1 [pin 16] - A2 [pin 15] - D [pin 8] - EN [pin 2] - GND [pin 14] - S1 [pin 4] - S2 [pin 5] - S3 [pin 6] - S4 [pin 7] - S5 [pin 12] - S6 [pin 11] - S7 [pin 10] - S8 [pin 9] - VDD [pin 13] - VSS [pin 3] ### UMUXR — [ADG1408YRUZ](https://www.flux.ai/kicad-part-library/adg1408yruz~zi.md) - Role: Analog Multiplexer - Manufacturer Part Number: ADG1408YRUZ - Functional Group: Analog Inputs/Tape Loop - Package or Case Code: TSSOP-16_4.4x5mm_P0.65mm - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ADG1408_1409.pdf - Manufacturer Name: Texas Instruments Inc. - Role Details: Select RCA, AUX or Tape Play right channel **Pins:** - A0 [pin 1] - A1 [pin 16] - A2 [pin 15] - D [pin 8] - EN [pin 2] - GND [pin 14] - S1 [pin 4] - S2 [pin 5] - S3 [pin 6] - S4 [pin 7] - S5 [pin 12] - S6 [pin 11] - S7 [pin 10] - S8 [pin 9] - VDD [pin 13] - VSS [pin 3] ### UOP1 — [OPA1656IDR](https://www.flux.ai/jecstronic/opa1656idr~w3j.md) - Manufacturer Name: Texas Instruments - Role Details: Input/record/sub output buffer and converter interface - Role: Audio Buffer - Part Type: Operational Amplifier (OP-AMP) - Functional Group: Analog Inputs/Tape Loop,DSP/ADC/DAC,Speaker/Line Outputs - Manufacturer Part Number: OPA1656IDR - Datasheet URL: https://www.ti.com/lit/ds/symlink/opa1655.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - -IN [pin 2] - +IN [pin 3] - NC [pin 1] - NC [pin 5] - NC [pin 8] - OUT [pin 6] - V- [pin 4] - V+ [pin 7] ### UPWR1 — [MP4572GQB-P](https://www.flux.ai/monolithicpower/mp4572gqb-p~00.md) - Functional Group: Power Entry & Rails - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP4572GQB - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/3439?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Manufacturer Name: Monolithic Power Systems - Manufacturer Part Number: MP4572GQB-P - Role: Buck Regulator - Role Details: 12 V 0.5 A auxiliary rail from 36–48 V input budget - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/m/p/mp4572_tac.jpg - Package or Case Code: QFN-12_MP4572_MNP **Pins:** - BST [pin 1] - CCM/SYNCO [pin 11] - EN [pin 12] - FB [pin 4] - FREQ [pin 5] - GND [pin 7] - IN [pin 8] - NC [pin 9] - NC [pin 10] - PG [pin 3] - SW [pin 2] - VCC [pin 6] ### UPWR2 — [MP4572GQB-P](https://www.flux.ai/monolithicpower/mp4572gqb-p~00.md) - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/m/p/mp4572_tac.jpg - Role Details: 5 V 1 A digital/audio rail from 36–48 V input budget - Package or Case Code: QFN-12_MP4572_MNP - Role: Buck Regulator - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP4572GQB - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/3439?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Manufacturer Name: Monolithic Power Systems - Functional Group: Power Entry & Rails - Manufacturer Part Number: MP4572GQB-P **Pins:** - BST [pin 1] - CCM/SYNCO [pin 11] - EN [pin 12] - FB [pin 4] - FREQ [pin 5] - GND [pin 7] - IN [pin 8] - NC [pin 9] - NC [pin 10] - PG [pin 3] - SW [pin 2] - VCC [pin 6] ### UPWR3 — [LMR33630BDDAR](https://www.flux.ai/lcsc/lmr33630bddar~o51d.md) - LCSC Part Number: C544370 - Manufacturer Name: TI(德州仪器) - JLCPCB Part Class: Extended Part - Role Details: 3.3 V / 1 A rail from 5 V; avoids 1.7 W LDO loss - Package or Case Code: SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-EP2.8-1 - Datasheet URL: https://www.ti.com/lit/ds/symlink/lmr33630.pdf - Manufacturer Part Number: LMR33630BDDAR - Functional Group: Power Entry & Rails - Role: Buck Regulator - Part Type: DC-DC Converters **Pins:** - BOOT [pin 7] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 4] - PGND [pin 1] - SW [pin 8] - VCC [pin 6] - VIN [pin 2] ### USPDIF1 — [DIR9001IPWQ1](https://www.flux.ai/lcsc/dir9001ipwq1~xnn3.md) - Manufacturer Part Number: DIR9001IPWQ1 - Package or Case Code: TSSOP-28_L9.7-W4.4-P0.65-LS6.4-BL - Role: Digital Audio Receiver - Part Type: Audio Interface ICs - JLCPCB Part Class: Extended Part - Role Details: Recover I2S and clocks from TOSLINK S/PDIF data - Functional Group: Optical & Bluetooth - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C2865325 **Pins:** - ~{AUDIO} [pin 1] - ~{RST} [pin 21] - AGND [pin 23] - BCKO [pin 11] - BFRAME [pin 18] - CKSEL [pin 28] - CLKST [pin 9] - COUT [pin 15] - DGND [pin 6] - DOUT [pin 12] - EMPH [pin 17] - ERROR [pin 27] - FILT [pin 22] - FMT0 [pin 25] - FMT1 [pin 26] - FSOUT0 [pin 2] - FSOUT1 [pin 3] - LRCKO [pin 10] - PSCK0 [pin 13] - PSCK1 [pin 14] - RSV [pin 19] - RXIN [pin 20] - SCKO [pin 4] - UOUT [pin 16] - VCC [pin 24] - VDD [pin 5] - XTI [pin 8] - XTO [pin 7] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/celestialaudio/retro-5p1-mini-amplifier~sw](https://www.flux.ai/celestialaudio/retro-5p1-mini-amplifier~sw).* --- *Generated from [https://www.flux.ai/celestialaudio/retro-5p1-mini-amplifier~sw](https://www.flux.ai/celestialaudio/retro-5p1-mini-amplifier~sw)*