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TeensyDSPDAC

jeroen94704·TeensyDSPDAC

TeensyDSPDAC PCB layout, top view — open source NXP board by jeroen94704
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About the TeensyDSPDAC PCB

TeensyDSPDAC is an open source NXP PCB design by jeroen94704, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 87 × 47 mm, with 49 components from 21 distinct parts.

Its main chip is the Teensy4.0, from the NXP family. Other key parts include the PCM5102A and LT1962-3.3. By type, the board carries 29 capacitors, 7 connectors, 6 resistors, 4 ICs, 2 diodes and 1 inductor.

It belongs with the audio and displays & leds designs in this gallery.

From the project

A design for a 4-channel USB DSP+DAC

This is a work in progress. Feel free to build your own (I've verified the design works), but be aware this will not be a plug-and-play experience, as the design needs some work.

This is a 4-channel USB DAC with advanced DSP capabilities. The DSP functionality is provided by a Teensy 4.0 and the DAC stage is built around a pair of TI PCM5102A's.

The Teensy's UART1, I2C0 and I2C1 ports are available through dedicated pin-headers. The UART is compatible with an FTDI 6-pin dupont connector (although, inevitably, I swapped RX and TX). The I2C headers are pin-compatible with those ubiquitous I2C…

TeensyDSPDAC, from the project README
From the project README

Main components on the TeensyDSPDAC

PCM5102ALT1962-3.3Teensy4.0

TeensyDSPDAC bill of materials (BOM)

49 components, 21 distinct parts.

QtyPartRefs
2
PCM5102A
U1, U2
1
LT1962-3.3
U3
1
Teensy4.0
U4
1
OUT1_L+R
J1
1
OUT2_L+R
J2
1
Teensy_UART
J3
1
UnusedPins_1
J4
1
I2C0
J5
1
I2C1
J6
1
UnusedPins_2
J8
2
LED
D1, D2
1
5.2uH
L1
8
10 uF
C1, C2, C3, C4, C13, C14, C15, C16
8
0.1 uF
C5, C6, C7, C9, C17, C18, C19, C21
4
2.2 uF
C8, C10, C20, C22
4
2.2 nF
C11, C12, C23, C24
4
10u
C25, C26, C28, C29
1
0.01u
C27
4
470
R1, R2, R3, R4
1
270
R5
Show 1 more
QtyPartRefs
1
620
R8

TeensyDSPDAC design files

The KiCad project lives in the jeroen94704/TeensyDSPDAC repository on GitHub; these links point at the commit this page was built from.

TeensyDSPDAC: common questions

What microcontroller does the TeensyDSPDAC use?

The TeensyDSPDAC is built around the Teensy4.0, from the NXP family.

How big is the TeensyDSPDAC PCB?

The TeensyDSPDAC measures 87 × 47 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TeensyDSPDAC?

49 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the TeensyDSPDAC design files?

From the jeroen94704/TeensyDSPDAC repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the TeensyDSPDAC design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the TeensyDSPDAC without the hardware?

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

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