2 layers90 × 90 mm
4 layers94 × 120 mm
Digital amplifier2
bybzmt/practise- Size
- 94 × 120 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 237
- Nets
- 141
- Pads
- 917
- Tracks, vias
- 1,848, 162
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 12 Aug 2019
- Updated
- 21 Jul 2025
Overview
Digital amplifier2 is an open-source printed circuit board by bybzmt, from the bybzmt/practise repository on GitHub. It is a 4-layer board of 94 × 120 mm with 237 parts on 141 nets, routed with 1,848 tracks and 162 vias.
It is built around the TPS55340PWP, TAS5805MPWP and OPA4134UA, with the TPA6120A2RGY, AMS1117-3.3 and AMS1117-5.0 among its other parts. Its parts include 123 capacitors, 63 resistors, 13 ICs, 12 inductors and 10 diodes. It belongs with the STM32 boards of this library.
Main components
11
TPS55340PWP
HTSSOP-14-EP-40℃~+125℃@(TA) 1 1.14MHz 2.9V~32V 2.9V~38V 5.25A 500uA Adjustable Boost Boost Built-in No HTSSOP-14-EP DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
TAS5805MPWP
HTSSOP-28-EP-25℃~+85℃ 0.03% 107dB 16.5mA 2-Channel 23W×2@8Ω 4.5V~26.4V 72dB Class D Overvoltage protection、Digitally programmable gain、Built-in audio processing HTSSOP-28-EP Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
OPA4134UA
SOIC-14-18V~-2.5V、2.5V~18V -40℃~+85℃ 0.00008% 106dB 4-Channel 5mA SOIC-14 Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
TPA6120A2RGY
VQFN-14-EP(3.5x3.5)-15V~-5V、5V~15V -40℃~+85℃ 128dB 2 Pairs Differential Inputs 2-Channel 75dB 80mWx2@600Ω Class AB Enable/shutdown function VQFN-14-EP(3.5x3.5) Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsAMS1117-5.0
SOT-223-40℃~+125℃ 1 1.3V 15V 1A 5V 60dB Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCM1792ADB
SSOP-28-25℃~+85℃ 2 24 3V~5.25V I2S SSOP-28 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
MS621FE-FL11E
UncategorisedSeiko Instruments
SD103AWS
SOD-3231 Independent 2A 350mA 40V 5uA@30V 600mV@200mA SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
S8550
SOT-23-55℃~+150℃ 1 PNP 100nA 120 150MHz 25V 300mW 500mA 5V 600mV PNP SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.md练手代码
Parts
237| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | 100nf | Capacitor_SMD:C_0603_1608Metric | C3, C4, C14, C27, C28, C33, C34, C36, C40, C42, C109, C110, C111, C112, C113, C115 +14 |
| 19 | 22uf | Capacitor_SMD:C_0805_2012Metric | C18, C19, C21, C22, C55, C67, C68, C69, C70, C73, C74, C78, C79, C80, C81, C84 +3 |
| 14 | 1k | Resistor_SMD:R_0603_1608Metric | R10, R12, R13, R14, R15, R16, R17, R18, R19, R26, R27, R28, R29, R48 |
| 13 | 10uf | Capacitor_SMD:C_0805_2012Metric | C12, C15, C25, C26, C31, C32, C51, C53, C56, C57, C93, C94, C132 |
| 10 | 47uf | Capacitor_SMD:C_1210_3225Metric | C23, C24, C29, C30, C66, C77, C100, C101, C102, C103 |
| 8 | 220nf | Capacitor_SMD:C_0603_1608Metric | C120, C121, C122, C123, C124, C125, C126, C127 |
| 7 | 10uf | Capacitor_SMD:C_0603_1608Metric | C2, C35, C39, C41, C43, C45, C97 |
| 7 | 9.53k | Resistor_SMD:R_0603_1608Metric | R5, R23, R59, R60, R61, R63, R65 |
| 7 | ss34 | Diode_SMD:D_SMA | D3, D4, D5, D6, D7, D8, D9 |
| 6 | 0Ω | Resistor_SMD:R_0603_1608Metric | R3, R22, R25, R39, R46, R62 |
| 6 | 10k | Resistor_SMD:R_0603_1608Metric | R24, R40, R47, R49, R55, R56 |
| 6 | 1uf | Capacitor_SMD:C_0603_1608Metric | C95, C96, C116, C117, C118, C119 |
| 5 | 100nf | Capacitor_SMD:C_0805_2012Metric | C20, C71, C72, C82, C83 |
| 5 | 2.2uh / 0805 | Inductor_SMD:L_0805_2012Metric | L3, L5, L6, L9, L10 |
| 5 | 9.53k | Resistor_SMD:R_0805_2012Metric | R1, R4, R30, R41, R42 |
| 4 | 10uh | Inductor_SMD:L_6.3x6.3_H3 | L13, L14, L15, L16 |
| 4 | 2.7nf | Capacitor_SMD:C_0603_1608Metric | C47, C48, C49, C50 |
| 4 | 680nf | Capacitor_SMD:C_0603_1608Metric | C128, C129, C130, C131 |
| 4 | m3 | MountingHole:MountingHole_3.2mm_M3_Pad | H5, H6, H7, H8 |
| 3 | 4.7uf | Capacitor_SMD:C_0603_1608Metric | C1, C104, C114 |
| 2 | 10k | Capacitor_SMD:C_0603_1608Metric | R9, R44 |
| 2 | 12pf | Capacitor_SMD:C_0805_2012Metric | C10, C11 |
| 2 | 12Ω | Resistor_SMD:R_0805_2012Metric | R33, R34 |
| 2 | 1uf | Capacitor_SMD:C_0805_2012Metric | C17, C60 |
| 2 | 2.37k | Resistor_SMD:R_0603_1608Metric | R8, R45 |
| 2 | 220uf | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C75, C76 |
| 2 | 22uh / 0630 | Inductor_SMD:L_6.3x6.3_H3 | L1, L2 |
| 2 | 39.2Ω | Resistor_SMD:R_0805_2012Metric | R20, R21 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R37, R38 |
| 2 | 43k | Resistor_SMD:R_0603_1608Metric | R7, R43 |
| 2 | 47nf | Capacitor_SMD:C_0603_1608Metric | C13, C59 |
| 2 | 47uf | Capacitor_SMD:C_0603_1608Metric | C37, C38 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R36, R57 |
| 2 | NC | Capacitor_SMD:C_0603_1608Metric | C63, C99 |
| 2 | TPS55340 | Package_SO:HTSSOP-14-1EP_4.4x5mm_P0.65mm_EP3.4x5mm_Mask3x3.1mm_ThermalVias | U2, U10 |
| 2 | tas5805m | Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm_ThermalVias | U15, U16 |
| 1 | 0 | Resistor_SMD:R_0805_2012Metric | R31 |
| 1 | 0.96_oled | Connector_FFC-FPC:TE_3-1734839-0_1x30-1MP_P0.5mm_Horizontal | J4 |
| 1 | 1.5k | Resistor_SMD:R_0805_2012Metric | R32 |
| 1 | 11k | Resistor_SMD:R_0603_1608Metric | R50 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric | R67 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R51 |
| 1 | 1mΩ | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 2.2uf | Capacitor_SMD:C_1206_3216Metric | C16 |
| 1 | 2200uf | Capacitor_THT:CP_Radial_D13.0mm_P5.00mm | C89 |
| 1 | 22k | Resistor_SMD:R_0805_2012Metric | R35 |
| 1 | 4.7uh / 0630 | Inductor_SMD:L_6.3x6.3_H3 | L4 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R68 |
| 1 | 5032 8m | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | 5k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 760k | Resistor_SMD:R_0603_1608Metric | R58 |
| 1 | 9.53kΩ | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | AMS1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U9 |
| 1 | Antenna_Shield | Connector_Coaxial:SMA_Molex_73251-2200_Horizontal | AE1 |
| 1 | AudioJack3_Switch | Connector_Audio:Jack_6.35mm_Neutrik_NMJ6HFD2-AU_Horizontal | J3 |
| 1 | Barrel_Jack_Switch | connector:DC-044A_5.5-2.1 | J2 |
| 1 | DLT11H0 | connector:spdif-DLT11H0 | U8 |
| 1 | MS621FE-FL11E | misc:MS621FE-FL11E | BT1 |
| 1 | OPA4134 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U6 |
| 1 | PCM1792A | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U5 |
| 1 | PW_OUT | Connector_Phoenix_MC:PhoenixContact_MC_1,5_4-G-3.81_1x04_P3.81mm_Horizontal | J7 |
| 1 | SD103AWS | Diode_SMD:D_SOD-323 | D10 |
| 1 | SJR-BTM331 | misc:SJR-BTM331 | U7 |
| 1 | STM32F446RETx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | TL431DBZ | Package_TO_SOT_SMD:SOT-23 | U11 |
| 1 | TPA6120A2 | ti:TPA6120A2DWP | U4 |
| 1 | Transformer_diy_02 | misc:Transformer_10p_22x14 | T1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_Palconn_UTC16-G | J1 |
| 1 | ec11 | misc:ec11_horizontal | SW1 |
| 1 | led1 | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | led2 | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | s8550 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | swd_pcb_2.54 | misc:swd_pcb_2.54 | j1 |
More from bybzmt/practise
3
Similar boards
- 4 layers100 × 85.5 mm
PCM3168APAP breakout
fsanzeni/PCM3168APAP-breakout
A breakout board for the Texas Instruments PCM3168APAP audio codec, featuring 6 analog inputs and 8 analog outputs with high-quality buffering and filtering circuitry.
206 parts5MIT - 2 layers100 × 100 mm
Crossover pcb
SL20032/Modular-BiAMP
Sample Modular Bi-AMP designed to work with Technics HD501 speakers
184 parts - 2 layers79.5 × 160 mm
- 2 layers65 × 50 mm
- 2 layers76.2 × 53.3 mm
- 4 layers85 × 55 mm
Dac
duanestorey/hifi-amp
A high-fidelity four-channel amplifier with active-crossovers and room correction
76 parts1 - 2 layers121 × 75.5 mm
Jlctest
cjheath/jlcbasic
JLC Basic parts library for Kicad fetched and converted from EasyEDA
46 parts5 - 2 layers73 × 79 mm
Questions
How big is the Digital amplifier2 PCB?
It measures 94 × 120 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Digital amplifier2 use?
237 parts, built around the TPS55340PWP, TAS5805MPWP, OPA4134UA and TPA6120A2RGY. 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.
Where can I download the Digital amplifier2 KiCad files?
From the bybzmt/practise repository on GitHub, at the commit this page was made from: the board is mcu/digital-amplifier2/circuit/main/digital-amplifier2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Digital amplifier2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask bybzmt before reusing the design.