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Current dr amp

werediver·current-dr-amp·KiCad/current-dr-amp/current-dr-amp.kicad_pcb

Current dr amp PCB layout, top view — open source board by werediver
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About the Current dr amp PCB

Current dr amp is an open source PCB design by werediver, published on GitHub. It is a 2-layer board measuring 100 × 90 mm, with 83 components from 20 distinct parts.

Other key parts include the OPA1641 and OPA1611. By type, the board carries 38 capacitors, 24 resistors, 10 transistors, 6 ICs and 5 connectors.

It belongs with the audio designs in this gallery.

From the project

A current drive headphone amplifier

This is a "current drive" or VCCS class A headphone amplifier. Some advocacy of current drive (as well as a whole book on the topic) can be found at current-drive.info.

The first prototype is briefly described on Prototype page.

The current version of the schematic is showed below.

Two such channels with a dedicated linear PSU are going to be fit into an extruded aluminum enclosure with internal dimensions of 96x155x50 mm.

Current dr amp, from the project README
From the project README

Main components on the Current dr amp

OPA1641OPA1611

Current dr amp bill of materials (BOM)

83 components, 20 distinct parts.

QtyPartRefs
2
OPA1641
U1, U4
4
OPA1611
U2, U3, U5, U6
4
BCM62B
Q1, Q3, Q6, Q8
2
BCM61B
Q2, Q7
2
BC807
Q4, Q9
2
BC817
Q5, Q10
1
POWER
J1
1
IN
J2
1
OUT
J3
2
ATT
J4, J5
18
0.1u
C1, C2, C5, C6, C10, C14, C15, C16 +10
10
10u
C3, C7, C11, C18, C19, C22, C26, C30 +2
4
22u
C4, C8, C23, C27
2
2.2u
C9, C28
4
56p
C12, C13, C31, C32
12
1k
R1, R3, R4, R5, R7, R8, R13, R15 +4
2
10k
R2, R14
4
680
R6, R10, R18, R22
2
1k
R9, R21
4
15 2W
R11, R12, R23, R24

Current dr amp design files

The KiCad project lives in the werediver/current-dr-amp repository on GitHub; these links point at the commit this page was built from.

Current dr amp: common questions

How big is the Current dr amp PCB?

The Current dr amp measures 100 × 90 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Current dr amp?

83 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Current dr amp design files?

From the werediver/current-dr-amp repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Current dr amp design in my own project?

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

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