Covg clamp
About the Covg clamp PCB
Covg clamp is an open source PCB design by lucask07, published on GitHub under the GPL-3.0 license. It is a board measuring 87.8 × 48.3 mm, with 173 components from 76 distinct parts.
Other key parts include the DAC101C081CIMK/NOPB, OPA828ID, MUX36S08IPWR, G6L-1F-TR-DC5 and 24AA025UIDT-I/SN. By type, the board carries 74 resistors, 49 capacitors, 26 ICs, 7 test points, 5 connectors and 5 diodes.
It belongs with the test & measurement designs in this gallery.
From the project
kicad schematic and layout for COVG bath and guard clamps
Schematic and layout for the COVG bath and guard clamps. This board sits near electrodes and includes a force output and a high-impedance feedback input to create a closed-loop clamp. Intention is to use the same design for the bath and guard clamps of a COVG amplifiers. The board supports digital programming of the current measurement gain and the feedback loop stability. Switching on the board allows for connect and disconnect of electrodes and injection (or measurements) of calibration signals onto an electrode.
Main components on the Covg clamp
Covg clamp bill of materials (BOM)
173 components, 76 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DAC101C081CIMK/NOPB DAC101C081CIMK_NOPB | TSOT-23-6_HandSoldering | IC1 |
| 2 | OPA828ID OPA828 | SOIC-8_3.9x4.9mm_P1.27mm | U1, U15 |
| 1 | MUX36S08IPWR ADG1208 | TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 3 | G6L-1F-TR-DC5 | G6L-1F-TR-DC5 | U3, U4, U5 |
| 1 | 24AA025UIDT-I/SN 24AA025UID | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | MIC5270-4.1YM5 MIC5270 | TSOT-23-5 | U7 |
| 2 | OPA2156IDR OPA2156xD | SOIC-8_3.9x4.9mm_P1.27mm | U8, U25 |
| 1 | LP2981A-33DBVT | SOT-23-5 | U9 |
| 1 | LP2951-30DR LP2951_SOIC | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | OPA991SIDBVR OPA991S | SOT-23-6 | U11 |
| 2 | TCA9555DBR | SSOP-24_5.3x8.2mm_P0.65mm | U12, U13 |
| 2 | DG412CUE+ DG412xUE | TSSOP-16_4.4x5mm_P0.65mm | U14, U17 |
| 3 | TMUX6111PWR | TSSOP-16_4.4x5mm_P0.65mm | U16, U20, U21 |
| 1 | AD8421ARZ | SOIC-8_3.9x4.9mm_P1.27mm | U18 |
| 2 | TMUX6136PWR DNI | TSSOP-16_4.4x5mm_P0.65mm | U19, U22 |
| 1 | OPA188AIDBVR OPA188xxDBV | TSOT-23-5 | U23 |
| 1 | LMP8350MAX/NOPB LMP8350MA_NOPB | SOIC-8_3.9x4.9mm_P1.27mm | U24 |
| 3 | MBT3904DW1T1G ON Semiconductor | SOT-363_SC-70-6 | Q1, Q3, Q4 |
| 1 | BC856B-7-F BC856 | SOT-23 | Q2 |
| 3 | 105-1103-001 | Test_Jack_Horiz | J1, J2, J3 |
Show 56 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10029449-111RLF HDMI_A | CONN_10029449-111RLF_HDMI_A | J4 |
| 1 | PR20204VBNN Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J5 |
| 2 | 1462042-7 | Relay_SPDT_TE_1462042-7 | K1, K2 |
| 6 | RCT-0C TE Connectivity AMP Connectors | PROBE_PAD_0805 | TP1, TP2, TP5, TP6, TP7, TP8 |
| 1 | RCT-0C TE Connectivity AMP Connectors | PROBE_PAD_0805 | TP4 |
| 5 | 1N4007FLTR 1N4007 | D_SOD-123F | D1, D2, D3, D4, D5 |
| 1 | BLM31PG500SN1L Ferrite_Bead | C_1206_3216Metric | FB1 |
| 6 | CC0603FRNPO0BN680 DNI | C_0603_1608Metric | C1, C27, C28, C37, C48, C49 |
| 1 | 06033C105KAT4A 1u | C_0603_1608Metric | C2 |
| 1 | CL21A106KOQNNNE 10u | C_0805_2012Metric | C3 |
| 23 | CL10B104KA8NNWC 0.1u | C_0603_1608Metric | C4, C7, C8, C13, C14, C20, C21, C22 +15 |
| 1 | CL10A475KP8NNNC 4.7u | C_0603_1608Metric | C5 |
| 1 | CC0603JRX7R9BB472 4.7n | C_0603_1608Metric | C6 |
| 1 | CC0603JRNPO9BN470 47pF | C_0603_1608Metric | C9 |
| 1 | CC0603JRNPO9BN221 200pF | C_0603_1608Metric | C10 |
| 1 | CC0603JRNPO9BN102 1nF | C_0603_1608Metric | C11 |
| 1 | CC0603JRNPO9BN332 4.7nF | C_0603_1608Metric | C12 |
| 2 | CL31B475KAHNFNE 4.7u | C_1206_3216Metric | C15, C16 |
| 3 | CC0603MRX7R8BB103 0.01u | C_0603_1608Metric | C17, C18, C19 |
| 1 | CC0603FRNPO0BN680 68p | C_0603_1608Metric | C23 |
| 1 | CC0603JRNPO9BN200 20p | C_0603_1608Metric | C24 |
| 1 | 06031A8R0CAT2A 8p | C_0603_1608Metric | C25 |
| 1 | CC0603CRNPO9BN4R0 4p | C_0603_1608Metric | C26 |
| 1 | CC0603JRX7R9BB472 5p | C_0603_1608Metric | C33 |
| 2 | CL31B106KAHNFNE 10u | C_1206_3216Metric | C45, C46 |
| 12 | RC0603FR-070RL 0 | R_0603_1608Metric | R1, R20, R23, R26, R27, R53, R54, R68 +4 |
| 13 | RC0603FR-0710KL 10k | R_0603_1608Metric | R2, R9, R10, R11, R12, R13, R22, R31 +5 |
| 2 | RC0603FR-0733K2L 33.2k | R_0603_1608Metric | R3, R47 |
| 1 | RC0603FR-07100KL 100k | R_0603_1608Metric | R4 |
| 1 | RC0603FR-07332KL 332k | R_0603_1608Metric | R5 |
| 1 | RC0603FR-071ML 1M | R_0603_1608Metric | R6 |
| 1 | RC0603FR-073M32L 3.32M | R_0603_1608Metric | R7 |
| 1 | RC0603FR-0710ML 10M | R_0603_1608Metric | R8 |
| 2 | RC0603FR-07240RL 240 | R_0603_1608Metric | R14, R17 |
| 1 | RC0603FR-07487RL 487 | R_0603_1608Metric | R15 |
| 1 | RC0603FR-071K13L 1.13k | R_0603_1608Metric | R16 |
| 5 | RC0603FR-0733RL 33 | R_0603_1608Metric | R18, R24, R44, R45, R57 |
| 3 | RC0603FR-0720KL 20k | R_0603_1608Metric | R19, R25, R30 |
| 1 | RC0603FR-0773K2L 2k | R_0603_1608Metric | R21 |
| 4 | RG3216P-4704-B-T1 4.7M | R_1206_3216Metric | R28, R52, R59, R60 |
| 7 | RC0603FR-0773K2L DNI | R_0603_1608Metric | R29, R51, R55, R65, R67, R69, R70 |
| 1 | RC0603FR-0712K1L 12.1k | R_0603_1608Metric | R32 |
| 1 | RC0603FR-0730K1L 30.1k | R_0603_1608Metric | R33 |
| 1 | RC0603FR-0760K4L 60.4k | R_0603_1608Metric | R34 |
| 1 | RC0603FR-07200RL 200 | R_0603_1608Metric | R35 |
| 1 | RC0603FR-071K1L 1.1k | R_0603_1608Metric | R36 |
| 1 | RC0603FR-072K49L 2.49k | R_0603_1608Metric | R37 |
| 2 | RC0603FR-071K5L 1500 | R_0603_1608Metric | R39, R40 |
| 2 | RC0603FR-07499RL 499 | R_0603_1608Metric | R42, R43 |
| 2 | RC0603FR-073K01L 3.01k | R_0603_1608Metric | R46, R49 |
| 1 | RC0603FR-0727K4L 27.4k | R_0603_1608Metric | R48 |
| 1 | RC0603FR-07120RL 120 | R_0603_1608Metric | R58 |
| 1 | RC0603FR-07470KL 470k | R_0603_1608Metric | R61 |
| 1 | RC0603FR-0730KL 30k | R_0603_1608Metric | R63 |
| 1 | RC0603FR-073KL 3k | R_0603_1608Metric | R64 |
| 1 | RC0603FR-071RL 1 | R_0603_1608Metric | R66 |
Covg clamp design files
The KiCad project lives in the lucask07/covg_clamp repository on GitHub; these links point at the commit this page was built from.
Covg clamp: common questions
How big is the Covg clamp PCB?
The Covg clamp measures 87.8 × 48.3 mm and is 1.6 mm thick.
How many components are on the Covg clamp?
173 components, from 76 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 Covg clamp design files?
From the lucask07/covg_clamp 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 Covg clamp design in my own project?
Yes, under the terms of its GPL-3.0 license, which lucask07 chose for the repository.
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