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IoAmp200W

ilolson·ioAmp200W·board/ioAmp200W.kicad_pcb

IoAmp200W PCB layout, top view — open source RP2040/RP2350 board by ilolson
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About the IoAmp200W PCB

IoAmp200W is an open source RP2040/RP2350 PCB design by ilolson, published on GitHub under the MIT license. It is a 6-layer board measuring 85.5 × 54 mm, with 365 components from 125 distinct parts.

Its main chip is the RP2350_60QFN, from the RP2040/RP2350 family. Other key parts include the INA750BIREMR, TAD5112IRGER, TDS5311P, TPS26750SRSMR and TPD4S480RUKR. By type, the board carries 165 capacitors, 125 resistors, 26 ICs, 24 diodes, 12 transistors and 6 connectors.

It belongs with the audio and test & measurement designs in this gallery.

From the project

Efficient and compact USB-C PD 3.1 EPR powered 2 channel speaker amplifier with DSP and digital input

ioAmp200W is a compact, USB-C-powered, 200 W-class mono audio amplifier built around an Infineon MA5332MS Class-D power stage. A Raspberry Pi RP2354A manages USB audio, power negotiation, monitoring, and auxiliary I/O.

The current schematic implements these main signal and power paths:

- RP2354A microcontroller with integrated flash - USB Audio Class 2 playback over a dedicated USB-C data port - 16-bit or 24-bit stereo USB streams at 44.1 or 48 kHz in the current firmware - I2S connection from the RP2354A to a TI TAD5112 stereo DAC - TLV9162 analog gain/level-shifting stage followed by the…

Main components on the IoAmp200W

INA750BIREMRTAD5112IRGERTDS5311PRP2350_60QFNTPS26750SRSMRTPD4S480RUKRLP5912-3.3DRVTPSM365R6FRDNRSN74AHCT245RGYRTLV9162IDSGRTLV9061XDBVLM706A0RRXRTLV75733PDRVRUSBLC6-2SC6MA5332MSREF3016ETPS7A4901DRBTM24512-DFMC6TGLM74700TPS16630RGETMP23ABS1TRTCA9517ADGK

IoAmp200W bill of materials (BOM)

365 components, 125 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
INA750BIREMR
IC1
1
TAD5112IRGER
IC2
1
TDS5311P
IC3
1
RP2350_60QFN
U1
1
TPS26750SRSMR
U2
1
TPD4S480RUKR
U3
1
LP5912-3.3DRV
U4
1
TPSM365R6FRDNR
U5
2
SN74AHCT245RGYR
U6, U7
1
TLV9162IDSGR
U9
3
TLV9061XDBV
TLV9061xDBV
U10, U22, U23
1
LM706A0RRXR
U11
1
TLV75733PDRVR
U12
1
USBLC6-2SC6
U13
1
MA5332MS
U14
1
REF3016E
U15
1
TPS7A4901DRBT
U16
1
M24512-DFMC6TG
U17
1
LM74700
U18
1
TPS16630RGET
U19
Show 105 more
QtyPartRefs
1
MP23ABS1TR
U20
1
TCA9517ADGK
U21
1
LM74700
U24
2
AO3400A
Q1, Q2
1
MMBTA56
Q3
1
MMBTA56
Q4
1
2N7002
Q5
3
BSS138
Q7, Q8, Q9
3
CSD18543Q3A
Q10, Q11, Q12
1
CSD18543Q3A
Q13
1
ABM8-272-T3
Y1
1
C108769
SPOUT
J3
1
SM03B-SRSS-TB
J4
1
5VOUT
J5
2
USB4105-GF-A
J6, J7
1
EXT48
J8
1
CONN_02X08_ODD_EVEN
Conn_02x08_Odd_Even
HUB75
1
SW_Push
SW1
2
BZT52C6V8
D1, D9
4
C779449
RLED
D2, D3, D10, D12
6
C74338
GLED
D5, D20, D21, D22, D23, D25
1
RLED
D6
4
MURA120T3G
D8, D11, D15, D16
2
RF071MM2STR
D13, D14
3
RF071MM2STR
D17, D18, D19
2
GLED
D24, D26
1
3.3U
3.3u
L1
2
10U
10u
L2, L3
1
3.3U
3.3u
L4
57
100NF
100nF
C1, C5, C8, C11, C12, C13, C14, C15 +49
4
1000UF
1000uF
C2, C22, C23, C24
2
15PF
15pF
C3, C4
30
4.7UF
4.7uF
C6, C7, C9, C10, C87, C88, C89, C90 +22
4
220PF
220pF
C28, C34, C54, C55
21
10UF
10uF
C29, C31, C32, C35, C45, C48, C49, C50 +13
4
470PF
470pF
C30, C33, C46, C69
4
2.2NF
2.2nF
C36, C38, C39, C40
2
1NF
1nF
C37, C41
2
51PF
51pF
C42, C94
5
4.7NF
4.7nF
C43, C52, C68, C70, C115
8
1UF
1uF
C44, C74, C75, C95, C111, C114, C118, C130
2
10uF
C47, C51
2
56NF
56nF
C64, C65
1
47NF
47nF
C67
6
47UF
47uF
C83, C84, C85, C86, C137, C138
1
6.8NF
6.8nF
C93
4
10NF
10nF
C123, C126, C154, C155
1
1.5PF
1.5pF
C129
1
22NF
22nF
C135
1
470NF
470nF
C139
2
100nF
C176, C178
1
22nF
C177
19
10K
10k
R1, R10, R14, R23, R24, R36, R45, R66 +11
8
1k
R2, R6, R73, R74, R87, R100, R116, R122
1
33
R5
2
27
R7, R8
7
100K
100k
R9, R16, R20, R49, R83, R90, R91
2
43.2K
34.8k
R11, R15
3
3.3K
3.3k
R12, R13, R37
2
20
R17, R31
2
8.2K
5.62k
R18, R26
2
220
R19, R22
1
18.2K
11.5k
R21
1
10.5K
10.5k
R25
2
47.5K
47.5k
R27, R28
10
4.7
R29, R58, R59, R72, R75, R76, R88, R114 +2
1
1.69K
1.15k
R30
1
33K
33k
R32
2
100
R33, R35
4
47.5K
47.5k
R34, R63, R64, R77
1
10
R38
1
105K
89.3k
R39
3
1
R40, R51, R60
1
11.5k
R41
1
47.5k
R42
2
5.1K
5.1k
R43, R52
1
820
R44
1
20K
20k
R46
1
18.2K
100
R47
1
6m
R48
1
887K
887k
R50
1
5.76K
5.76k
R53
1
41.2K
41.2k
R54
5
24.3K
24.3k
R55, R84, R85, R113, R115
8
2.2K
2.2k
R56, R57, R68, R69, R89, R99, R103, R104
2
22K
22k
R61, R62
1
10K
100
R65
1
120K
120k
R78
1
12K
12k
R80
2
4.7K
4.7k
R81, R108
1
24.9K
24.9k
R82
1
1.3K
1.3k
R86
1
422K
422k
R92
1
18.2K
18.2k
R94
1
6.49K
6.49k
R95
1
9.53K
9.53k
R96
1
15K
15k
R97
2
100k
R98, R127
1
15K
15k
R107
2
680
R110, R111
1
1.5K
1.5k
R112
2
309K
309k
R117, R119
1
2.2k
R126
1
10k
R128
2
24.3k
R129, R130

IoAmp200W design files

The KiCad project lives in the ilolson/ioAmp200W repository on GitHub; these links point at the commit this page was built from.

IoAmp200W: common questions

What microcontroller does the IoAmp200W use?

The IoAmp200W is built around the RP2350_60QFN, from the RP2040/RP2350 family.

How big is the IoAmp200W PCB?

The IoAmp200W measures 85.5 × 54 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the IoAmp200W?

365 components, from 125 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 IoAmp200W design files?

From the ilolson/ioAmp200W 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 IoAmp200W design in my own project?

Yes, under the terms of its MIT license, which ilolson chose for the repository.

Can I test firmware for the IoAmp200W without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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