HardLabs

AK4619 DevBoard

dchwebb·QuadMod·Hardware/AK4619_DevBoard.kicad_pcb

AK4619 DevBoard PCB layout, top view — open source board by dchwebb

About the AK4619 DevBoard PCB

AK4619 DevBoard is an open source PCB design by dchwebb, published on GitHub. It is a 2-layer board measuring 72.5 × 98 mm, with 74 components from 25 distinct parts.

Other key parts include the TL074, MCP6004, Hyperram_BGA and AK4619VN. By type, the board carries 25 capacitors, 21 resistors, 12 jumpers, 9 connectors, 4 ICs and 2 test points.

It belongs with the audio and dev boards & breakouts designs in this gallery.

From the project

Eurorack 4 voice effects processor based on STM32H563

Quadmod is a Eurorack modular four channel effect module. A modulation section allows either phasing or flanging followed by a delay. As part of the Mountjoy Modular polyphonic range the module uses a series of intermodulation paths to convert a four channel input to a stereo output.

Quadmod uses an STM32563 microcontroller which controls a four channel Audio Codec (AsahiKasei AK4619) using SPI for configuration and SAI (Serial Ausio Interface) peripheral to manage the 4 in and 4 out I2S audio streams. The microcontroller reads the front panel controls with internal 12 bit ADCs.

AK4619 DevBoard, from the project README
From the project README

Main components on the AK4619 DevBoard

TL074MCP6004Hyperram_BGAAK4619VN

AK4619 DevBoard bill of materials (BOM)

74 components, 25 distinct parts.

QtyPartRefs
1
TL074
U1
1
MCP6004
U2
1
Hyperram_BGA
U3
1
AK4619VN
U4
1
Power
J1
1
Power
J2
1
In
J3
1
Out
J4
1
Out_Amp
J5
1
Conn_02x08_Odd_Even
J6
1
Conn_02x15_Odd_Even
J7
1
Conn_02x10_Odd_Even
J8
1
Conn_02x17_Odd_Even
J9
12
Jumper_NC_Small
JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 +4
2
TestPoint
TP1, TP2
1
L_Small
L1
8
100nF
C1, C2, C3, C13, C14, C16, C17, C18
3
10uF
C4, C15, C19
12
1uF
C5, C6, C7, C8, C9, C10, C11, C12 +4
2
2.2uF
C24, C25
Show 5 more
QtyPartRefs
1
10k
R1
4
C4184
100k
R2, R4, R6, R8
4
C25819
68k
R3, R5, R7, R9
8
C23212
14k
R10, R11, R12, R13, R18, R19, R20, R21
4
C23212
10k
R14, R15, R16, R17

AK4619 DevBoard design files

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

AK4619 DevBoard: common questions

How big is the AK4619 DevBoard PCB?

The AK4619 DevBoard measures 72.5 × 98 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AK4619 DevBoard?

74 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the AK4619 DevBoard design files?

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

Can I use the AK4619 DevBoard design in my own project?

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

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