2 layers85 × 56 mm
Yoga v2
mschwingen/hardware
Hardware designs by Michael Schwingen, michael at schwingen dot org
85 parts10
2 layers99.7 × 35.6 mm
DiffAmp
krebsd/current-diffampDifferential Amplifier circuit for use in current sensing applications. The circuit is designed to be used in conjunction with an oscilloscope.
- Size
- 99.7 × 35.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 274
- Nets
- 62
- Pads
- 448
- Tracks, vias
- 725, 22
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 17 Mar 2018
- Updated
- 3 Jun 2018
Overview
DiffAmp is an open-source printed circuit board by krebsd, from the krebsd/current-diffamp repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 99.7 × 35.6 mm with 274 parts on 62 nets, routed with 725 tracks and 22 vias.
It is built around the OPA189ID, AD8421ARZ and CMPD6001S, with the PFRA.050.2 and Y14870R10000B9W among its other parts. Its parts include 43 resistors, 39 capacitors, 7 ICs, 5 connectors and 4 diodes.
Main components
5
OPA189ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 1 1.7mA 140pA 14MHz 168dB 20V/us 3uV 4.5V~36V 5.2nV/√Hz@1kHz 5nV/℃ 65mA 70pA EMI filtering/RF suppression、Zero drift / auto-zero、ESD protection、Reverse-phase input protection Rail-to-rail output SOP-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsAD8421ARZ
SOIC-8-18V~-2.5V、2.5V~18V -40℃~+85℃ 0.02% 1 10MHz 1V/V~10000V/V 1nA 1pA/℃ 2.3mA 2nA 3.2nV/√Hz@1kHz 35V/us 400nV/℃ 5V~36V 60uV 65mA 700ns 86dB 90dB External resistor gain、Overvoltage protection、Integrated ADC driver SOIC-8 Instrumentation Amplifiers ROHSAnalog DevicesInstrumentation OpAmps
CMPD6001S
SOT-23-3SOT-23-3 New Arrivals ROHSCentral SemiconUncategorisedPFRA.050.2
插件-40℃~+85℃ 1.17Ω 1A 40A 410mΩ 4s 500mA 60V 7.9mm 750mW 插件 Resettable Fuses ROHSSCHURTERResettable Fuses
Y14870R10000B9W
2512100mΩ 1W Current Sense Resistor SMD ±0.1% ±15ppm/℃ 2512 Current Sense Resistors / Shunt Resistors ROHSVishay IntertechnologyCurrent Sense Resistors / Shunt Resistors
README
README.mdDifferential current sense Amplifier - current-diffamp
Differential Amplifier circuit for use in current sensing applications. The circuit is designed to be used in conjunction with an oscilloscope.
PREFACE
This project and especially its documentation including this README is still in a very early state of development. This document will be updated with further information in the future.
EDA
- KiCad - KiCad EDA is used for the PCB design
Authors
- David Krebs - Initial work - krebsd
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
Parts
274| Qty | Value | Footprint | References |
|---|---|---|---|
| 163 | DiffAmp:VIA-0.6mm | , , , , , , , , , , , , , , , +147 | |
| 12 | C | Capacitors_SMD:C_0805 | C15, C16, C17, C18, C19, C20, C23, C24, C25, C29, C34, C39 |
| 11 | 100n | Capacitors_SMD:C_0805 | C2, C14, C26, C27, C28, C31, C32, C33, C36, C37, C38 |
| 8 | 249 | Resistors_SMD:R_0805 | R19, R20, R21, R22, R23, R24, R25, R26 |
| 5 | 10n | Capacitors_SMD:C_0805 | C7, C8, C9, C10, C13 |
| 4 | 0 | Resistors_SMD:R_0805 | R5, R29, R34, R40 |
| 4 | 10k | Resistors_SMD:R_0805 | R2, R3, R7, R8 |
| 4 | 10u | Capacitors_SMD:C_1210 | C5, C6, C11, C12 |
| 4 | 3M9 | Resistors_SMD:R_0805 | R11, R12, R13, R14 |
| 4 | CMPD6001S | TO_SOT_Packages_SMD:SOT-23 | D1, D2, D3, D4 |
| 4 | Jumper_NC_Dual | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | JP1, JP3, JP6, JP7 |
| 3 | 47 | Resistors_SMD:R_2512 | R30, R36, R42 |
| 3 | Conn_01x02 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J3, J4, J5 |
| 3 | Jumper | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | JP2, JP4, JP5 |
| 3 | OPA189 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U4, U6, U7 |
| 3 | R | Resistors_SMD:R_0805 | R31, R37, R43 |
| 2 | 100u | Capacitors_THT:CP_Radial_D8.0mm_P3.50mm | C3, C4 |
| 2 | 10p | Capacitors_SMD:C_0805 | C30, C35 |
| 2 | 130k | Resistors_SMD:R_0805 | R1, R4 |
| 2 | 1M0 | Resistors_SMD:R_0805 | R17, R18 |
| 2 | 1M2 | Resistors_SMD:R_0805 | R15, R16 |
| 2 | 1k | Resistors_SMD:R_0805 | R6, R28 |
| 2 | 1k0 | Resistors_SMD:R_0805 | R32, R38 |
| 2 | 2k2 | Resistors_SMD:R_0805 | R35, R41 |
| 2 | 6k8 | Resistors_SMD:R_0805 | R33, R39 |
| 2 | C_Variable | Capacitors_SMD:C_Trimmer_Murata_TZC3 | C21, C22 |
| 1 | 100 | Resistors_SMD:R_0805 | R27 |
| 1 | 10u | Capacitors_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 22 | Resistors_SMD:R_0805 | R9 |
| 1 | AD8421 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U5 |
| 1 | Jumper_NO | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | JP8 |
| 1 | PFRA050 | DiffAmp:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | F1 |
| 1 | SF_IHXXXXS | Converters_DCDC_ACDC:DCDC-Conv_TRACO_TMR_1-xxxx_Dual | U1 |
| 1 | Screw_Terminal_1x03 | Connectors_Terminal_Blocks:TerminalBlock_bornier-3_P5.08mm | J2 |
| 1 | TPS7A30 | Housings_SSOP:MSOP-8-1EP_3x3mm_Pitch0.65mm | U3 |
| 1 | TPS7A49 | Housings_SSOP:MSOP-8-1EP_3x3mm_Pitch0.65mm | U2 |
| 1 | USB_OTG | DiffAmp:MIC_USB_BBU | J1 |
| 1 | Y14870R10000B9W | DiffAmp:CSM2512 | R10 |
The 270 most common of 274 parts.
Questions
How big is the DiffAmp PCB?
It measures 99.7 × 35.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DiffAmp use?
274 parts, built around the OPA189ID, AD8421ARZ, CMPD6001S and PFRA.050.2. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the DiffAmp KiCad files?
From the krebsd/current-diffamp repository on GitHub, at the commit this page was made from: the board is DiffAmp.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the DiffAmp design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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