HardLabs

ADSR-3310-8

polykit·adsr-3310-8

ADSR-3310-8 PCB layout, top view — open source board by polykit

About the ADSR-3310-8 PCB

ADSR-3310-8 is an open source PCB design by polykit, published on GitHub. It is a 2-layer board measuring 98.5 × 132.5 mm, with 120 components from 27 distinct parts.

Other key parts include the TL074 and AS3310. By type, the board carries 52 capacitors, 38 resistors, 9 ICs, 6 connectors and 4 test points.

It belongs with the audio designs in this gallery.

From the project

Kicad schematics and PCB layout for an 8 channel ADSR based on CEM3310/AS3310

Here you can find Kicad schematics and PCB layout for an 8 channel ADSR based on the CEM3310/AS3310 integrated circuit. It has a separate control board for all 4 parameters and offers gate and trigger input and CV output. Power is supplied by standard +12V/-12V Eurorack connector.

Leave 3310 ICs out and turn attack, decay and release control to maximum. Adjust trimpots until you measure -240mV on all three test points to ground.

ADSR-3310-8, from the project README
From the project README

Main components on the ADSR-3310-8

TL074AS3310

ADSR-3310-8 bill of materials (BOM)

120 components, 27 distinct parts.

QtyPartRefs
1
TL074
U1
8
AS3310
U2, U3, U4, U5, U6, U7, U8, U9
1
CONTROL
J1
1
POWER
J2
1
TRIGGER
J3
1
GATE
J4
1
CV
J5
1
CONTROL CV MOD
J6
1
TRIM A 10k
RV1
1
TRIM D 10k
RV2
1
TRIM R 10k
RV3
8
TIME 50k
RV4, RV5, RV6, RV7, RV8, RV9, RV10, RV11
1
A
TP1
1
D
TP2
1
S
TP3
1
R
TP4
2
100u
C1, C2
18
100n
C3, C4, C9, C10, C15, C16, C21, C22 +10
16
10n
C5, C6, C11, C12, C17, C18, C23, C24 +8
8
10n*
C7, C13, C19, C25, C31, C37, C43, C49
Show 7 more
QtyPartRefs
8
39n*
C8, C14, C20, C26, C32, C38, C44, C50
3
56k
R1, R2, R3
6
1k
R4, R5, R6, R10, R11, R12
3
3k9
R7, R8, R9
2
10
R13, R14
16
10k
R15, R17, R18, R19, R21, R23, R24, R26 +8
8
680
R16, R20, R22, R25, R28, R31, R34, R37

ADSR-3310-8 design files

The KiCad project lives in the polykit/adsr-3310-8 repository on GitHub; these links point at the commit this page was built from.

ADSR-3310-8: common questions

How big is the ADSR-3310-8 PCB?

The ADSR-3310-8 measures 98.5 × 132.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ADSR-3310-8?

120 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the ADSR-3310-8 design files?

From the polykit/adsr-3310-8 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ADSR-3310-8 design in my own project?

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

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