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PSRR-Injector-Board

Amodo-Design·PSRR-Injector-Board·hardware/AMODO_PSRR_INJECTOR_CBs_1.kicad_pcb

PSRR-Injector-Board layout, top view — open source board by Amodo-Design

About the PSRR-Injector-Board

PSRR-Injector-Board is an open source PCB design by Amodo-Design, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 114 × 100 mm, with 39 components from 17 distinct parts.

By type, the board carries 11 connectors, 8 test points, 8 capacitors, 8 resistors and 4 inductors.

It belongs with the power & battery designs in this gallery.

From the project

Board to allow you to measure power supply rejection ratio. Allows you to inject an AC ripple on top of your DC power supply to measure downstream. 0dB from 100Hz+.

Board to allow you to measure power supply rejection ratio.

Allows you to inject an AC ripple on top of your DC power supply to measure downstream. 0dB from 100Hz+.

Product page(https://amododesign.com/products/psrr-injector-board/)) · Designed by Amodo

A clean lab supply connects on one side, and your DUT on the other. A function generator creates a signal that is AC-coupled onto the supply rail, superimposing a small ripple on top of the DC. Large series inductance (1000 µH) between the coupling node and the supply input forms an LC filter with the injection caps (880 µF per rail)…

PSRR-Injector-Board bill of materials (BOM)

39 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
FCR7350Y
J1, J7
2
FCR7350R
J2, J5
4
FCR7350B
J3, J6, J8, J9
2
SMA-J-P-H-ST-TH1
SMA Jack
J4, J10
1
5-146252-1|530153-2
~
J11
1
5002
+Vinjected
TP1
1
5002
+Vout
TP2
2
5002
GND
TP3, TP8
1
5002
-Vout
TP4
1
5002
+Vsupply
TP7
1
5002
-Vsupply
TP9
1
5002
-Vinjected
TP12
4
744224
250uH
L1, L2, L3, L4
8
UEP1H221MHD
220uF
C1, C2, C3, C4, C5, C6, C7, C8
4
RCC12060000Z0EA
0R
R1, R3, R4, R6
2
CSRT0603FT5R00
5R
R2, R8
2
ERJ-3EKF49R9V
49.9R
R5, R7

PSRR-Injector-Board design files

The KiCad project lives in the Amodo-Design/PSRR-Injector-Board repository on GitHub; these links point at the commit this page was built from.

PSRR-Injector-Board: common questions

How big is the PSRR-Injector-Board?

The PSRR-Injector-Board measures 114 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the PSRR-Injector-Board?

39 components, from 17 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 PSRR-Injector-Board design files?

From the Amodo-Design/PSRR-Injector-Board 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 PSRR-Injector-Board design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which Amodo-Design chose for the repository.

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