Diff probe amplifier

devEmbedded·differential_probe·diff_probe_amplifier/diff_probe_amplifier.kicad_pcb

Diff probe amplifier PCB layout, top view — open source board by devEmbedded

About the Diff probe amplifier PCB

Diff probe amplifier is an open source PCB design by devEmbedded, published on GitHub. It is a 4-layer board measuring 25.6 × 38.6 mm, with 75 components from 31 distinct parts.

Other key parts include the R1283K001C and OPA659. By type, the board carries 23 capacitors, 22 resistors, 9 inductors, 7 connectors, 6 diodes and 4 ICs.

It belongs with the audio designs in this gallery.

From the project

Modular differential probe (DEDP-100)

Modular differential probe (DEDP-100) =====================================

This repository contains the design files of a 100 MHz differential probe for use with oscilloscopes. The design is modular and consists of a base amplifier unit with exchangeable probe tip accessories. The accessory can be chosen to fit the desired voltage range and connection type.

Currently this project is still in development. While the prototype revisions work well, they are still being redesigned for improvements.

Main components on the Diff probe amplifier

R1283K001COPA659

Diff probe amplifier bill of materials (BOM)

75 components, 31 distinct parts.

Qty	Part	Footprint	Refs
1	R1283K001C	DFN-12-1EP_3x4mm_P0.5mm_EP1.7x3.3mm	U1
3	OPA659	Texas_S-PVSON-N8_ThermalVias	U2, U3, U4
1	Conn_Triaxial	TRIAX_SOLDER	J1
1	Spring+S	TE_2306454_RIGHT	J3
1	Spring+G	TE_2306454_RIGHT	J4
1	Spring-G	TE_2306454_LEFT	J5
1	Spring-S	TE_2306454_LEFT	J6
1	IN+	MMCX_Molex_73415-0961_Horizontal_1.6mm-PCB	J7
1	IN-	MMCX_Molex_73415-0961_Horizontal_1.6mm-PCB	J8
1	HOLE_1.8mm	HOLE_1.8mm	H2
2	25k	Potentiometer_Bourns_3314J_Vertical	RV1, RV2
1	GAIN	JS202011JCQN	SW1
2	SBR1A20	D_SOD-523	D1, D2
1	RED	LED_0603_1608Metric	D3
3	PESD5V0X1B	SOT-23	D4, D5, D6
3	BLM18KG102	L_0603_1608Metric	L1, L2, L9
2	4.7µH	L_0805_2012Metric_Pad1.15x1.40mm_HandSolder	L3, L4
4	MMZ1608B601	L_0603_1608Metric	L5, L6, L7, L8
4	6pF	C_0603_1608Metric	C1, C11, C18, C19
9	10µF	C_0603_1608Metric	C2, C3, C6, C7, C8, C9, C12, C13 +1

Show 11 more

Qty	Part	Footprint	Refs
2	68pF	C_0603_1608Metric	C4, C5
2	4.5-20pF	C_Trimmer_Knowles_JZ_JR	C16, C17
6	100nF	C_0603_1608Metric	C20, C21, C22, C23, C24, C25
3	1k	R_0603_1608Metric	R1, R6, R7
3	5.1k	R_0603_1608Metric	R2, R3, R8
1	22k	R_0603_1608Metric	R4
3	49.9	R_0603_1608Metric	R9, R10, R22
4	110	R_0603_1608Metric	R11, R18, R19, R23
2	487k	R_0603_1608Metric	R12, R13
4	220	R_0603_1608Metric	R14, R15, R20, R21
2	24	R_0603_1608Metric	R16, R17

Diff probe amplifier design files

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

Layoutdiff_probe_amplifier/diff_probe_amplifier.kicad_pcb

Diff probe amplifier: common questions

How big is the Diff probe amplifier PCB?

The Diff probe amplifier measures 25.6 × 38.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Diff probe amplifier?

75 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Diff probe amplifier design files?

From the devEmbedded/differential_probe repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Diff probe amplifier design in my own project?

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

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