HardLabs

Sincos interpolator

finngineering·sincos_interpolator·hardware/sincos_interpolator.kicad_pcb

Sincos interpolator PCB layout, top view — open source board by finngineering
Simulate this board

About the Sincos interpolator PCB

Sincos interpolator is an open source PCB design by finngineering, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 50 mm, with 57 components from 41 distinct parts.

Other key parts include the iC-NV, MC3487DX and TL431LP. By type, the board carries 17 jumpers, 14 resistors, 10 connectors, 5 diodes, 5 capacitors and 3 ICs.

It belongs with the sensors designs in this gallery.

From the project

SinCos Interpolator to quadrature output

By component values and solder jumper configuration, the board can be adapted to different type of transducers. For 11 uA peak-to-peak transducers, resistors R11, R12, R21 and R22 should have a 25 kOhm resistance and VREF jumpers JP11 and JP21 should be shorted by soldering. Jumper JP2/SG1 should be soldered "LO" (circuit ground) and JP1/SG0 should be left open to allow signal amplitues of up to 1 Vpp. Jumper JP5/ROT can be soldered "LO" unless some specific phase behaviour is required. Jumpers JP4/SF1 and JP3/SF0 are both left open for an interpolation factor of 5. With the 20 um periodicity…

Sincos interpolator, from the project README
From the project README

Main components on the Sincos interpolator

iC-NVMC3487DXTL431LP

Sincos interpolator bill of materials (BOM)

57 components, 41 distinct parts.

QtyPartRefs
1
iC-NV
U1
1
MC3487DX
U2
1
TL431LP
U3
1
TIC116
Q1
1
BC557
Q2
1
POWER IN
J1
1
POWER OUT
J2
2
RJ45_Shielded
J3, J4
1
SIN
J11
1
A
J12
1
COS
J21
1
B
J22
1
ZERO
J31
1
Z
J32
1
500mA
F1
1
SG0
JP1
1
SG1
JP2
1
SF0
JP3
1
SF1
JP4
1
ROT
JP5
Show 21 more
QtyPartRefs
1
RCLK
JP6
2
SHIELD GND
JP7, JP9
1
SHIELD CONNECT
JP8
1
SIN VREF
JP11
1
A SINGLE
JP12
1
A- TO GND
JP13
1
COS VREF
JP21
1
B SINGLE
JP22
1
B- TO GND
JP23
1
Z SINGLE ENDED
JP32
1
Z- TO GND
JP33
1
1N4004
D1
4
LED
D2, D11, D21, D31
1
10u
C1
4
100n
C3, C4, C5, C6
6
1k
R1, R7, R8, R13, R23, R33
1
R
R3
1
12k
R4
1
10k
R5
1
100
R6
4
25k
R11, R12, R21, R22

Sincos interpolator design files

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

Sincos interpolator: common questions

How big is the Sincos interpolator PCB?

The Sincos interpolator measures 100 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sincos interpolator?

57 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sincos interpolator design files?

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

Can I use the Sincos interpolator design in my own project?

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

Similar boards