HardLabs

Miniamp

wafaffles·Miniamp·ECADModels_Production/Miniamp.kicad_pcb

Miniamp PCB layout, top view — open source board by wafaffles

About the Miniamp PCB

Miniamp is an open source PCB design by wafaffles, published on GitHub. It is a 6-layer board measuring 130 × 57 mm, with 92 components from 48 distinct parts.

Other key parts include the WM8524CGEDT, MAX97220AETE+T, BQ24093DGQR, TPS259631DDAR and XB8089D. By type, the board carries 37 resistors, 27 capacitors, 8 ICs, 6 switches, 6 diodes and 4 connectors.

It belongs with the power & battery, audio and iot & wireless designs in this gallery.

From the project

A pocketable DAC/amp based on the PCM2706CPJTR IC. It will be a low power DAC/amp with multiple buttons to be able to easily control media without opening the device. Hopefully it will have potential Bluetooth capability and and an internal battery to conserve the phone battery.

- Independent USB-C Ports - Top Mounted Data Only USB-C - Side Mounted Power Only USB-C - Variable Size Audio Outputs - 1/4" - 3.5mm - 5 Physical Media Control Buttons - Toggleable Power Switch - 2 Integrated 18650 Batteries - Avoids Discharging Connected Device (e.g., Mobile Phone, Laptop) - Small Form Factor

Miniamp is a portable, battery powered DAC and headphone amp designed for phones, portable devices, or for desk deployments. The Miniamp features a Hifi DAC chip capable of producing 24bit 44.1kHz outputs at 2.1Vrms, with adequite power for majority of headphones. It utilizes a Silicon…

Miniamp, from the project README
From the project README

Main components on the Miniamp

WM8524CGEDTMAX97220AETE+TBQ24093DGQRTPS259631DDARXB8089DCP2615-XX-XMAP63205WU1049

Miniamp bill of materials (BOM)

92 components, 48 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
WM8524CGEDT
IC1
1
MAX97220AETE+T
IC2
1
BQ24093DGQR
IC3
1
TPS259631DDAR
IC4
1
XB8089D
IC5
1
CP2615-XX-XM
CP2615-xx-xM
U1
1
AP63205WU
U2
1
1049
2x 18650 Battery
U3
2
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1, J2
1
ACJS-MHOM
J3
1
SJ1-3554NG
J4
5
SW_SPST
SW1, SW2, SW3, SW4, SW5
1
SW_PWR
SW6
1
GPIO.10
TP1
1
I2C_SCL
TP2
1
I2C_SDA
TP3
1
SP0503BAHT
D1
1
GRN
D2
1
RED
D3
2
C2762697
D,Schottky,IEC
D4, D5
Show 28 more
QtyPartRefs
1
2V YLW
D6
1
4.7UH
4.7uH
L1
11
1UF
1uF
C1, C3, C5, C7, C12, C13, C14, C15 +3
7
.1uF
C2, C4, C16, C20, C24, C25, C27
1
2.2UF
2.2uF
C6
2
4.7UF
4.7uF
C8, C9
2
2.7NF
2.7nF
C10, C11
1
10UF
10uF
C18
2
22UF
22uF
C21, C22
1
2.2NF
2.2nf
C26
2
15k 1%
R1, R2
2
10k 1%
R3, R4
1
8.25k 1%
R5
1
100k 1%
R6
4
5.1K
5.1k
R7, R8, R13, R14
1
24K
24k
R9
1
47K
47k
R10
2
4.7K
4.7k
R11, R12
11
10K
10k
R15, R16, R19, R20, R21, R22, R23, R24 +3
2
560
R17, R18
2
1k
R26, R32
1
2k
R27
2
1.5K
1.5k
R28, R31
1
590k 1%
R33
1
124k 1%
R34
1
274k 1%
R35
1
909 1%
R36
1
300
R37

Miniamp design files

The KiCad project lives in the wafaffles/Miniamp repository on GitHub; these links point at the commit this page was built from.

Miniamp: common questions

How big is the Miniamp PCB?

The Miniamp measures 130 × 57 mm, has 6 copper layers and is 2 mm thick.

How many components are on the Miniamp?

92 components, from 48 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Miniamp design files?

From the wafaffles/Miniamp repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Miniamp design in my own project?

The repository has no license, so all rights stay with wafaffles. Use it as a reference, and ask the author before reusing the design.

Similar boards