CurrentSource
About the CurrentSource PCB
CurrentSource is an open source PCB design by esl-epfl, published on GitHub. It is a 4-layer board measuring 15.3 × 45.8 mm, with 34 components from 27 distinct parts.
Other key parts include the INA212AIDCKR, LM334M/NOPB, 24AA02E-OT, ADS1219 and TLV75801PDBV. By type, the board carries 12 resistors, 10 capacitors, 6 ICs, 4 connectors and 1 diode.
From the project
This chewing gum board is designed to be a current source and intended for connection to the main board through the male pin headers to both sides. It can produce a current output from 600 nA to 1.4 uA, usually as an external bias current to the analog blocks in the test chip. #
This chewing gum board is designed to be a current source and intended for connection to the main board through the male pin headers to both sides. It can produce a current output from 600 nA to 1.4 uA, usually as an external bias current to the analog blocks in the test chip. # User guide and programmability
It is a single-channel current source based on the LM334 IC. It is capable of outputting from 600 nA to 1.4 uA using the resistor network, with a potentiometer that allows to adjust the output within this range. (Note that this output current range can be extended up to 10 mA by…
Main components on the CurrentSource
CurrentSource bill of materials (BOM)
34 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | INA212AIDCKR | SOT-363_SC-70-6 | IC1 |
| 1 | LM334M/NOPB LM334M_NOPB | SOIC127P600X175-8N | IC2 |
| 1 | 24AA02E-OT | SOT-23-5 | U1 |
| 1 | ADS1219 | Texas_RTE0016D_WQFN-16-1EP_3x3mm_P0.5mm_EP0.8x0.8mm_ThermalVias | U2 |
| 1 | TLV75801PDBV | SOT-23-5 | U3 |
| 1 | MCP4726 | TSOT-23-6 | U4 |
| 1 | C1509219 Conn_Coaxial | SMA_Amphenol_132289_EdgeMount | J1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Conn_01x02 | PinSocket_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_02x01 | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | C83694 500K | Potentiometer_Bourns_3296W_Vertical | RV1 |
| 1 | LED | LED_0603_1608Metric | D1 |
| 7 | 0.1U 0.1u | C_0603_1608Metric | C1, C2, C5, C6, C7, C8, C10 |
| 1 | 10U 10u | C_0603_1608Metric | C3 |
| 1 | 0.1U .1u | C_0603_1608Metric | C4 |
| 1 | 1u | C_0603_1608Metric | C9 |
| 1 | 10 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 75K 75k | R_0603_1608Metric | R2 |
| 1 | 140K 140k | R_0603_1608Metric | R3 |
| 1 | 3.3K 3.3k | R_0603_1608Metric | R4 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1M | R_0402_1005Metric | R5 |
| 1 | 10 | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R6 |
| 2 | 10K 10k | R_0603_1608Metric | R7, R9 |
| 1 | 20K 20k | R_0603_1608Metric | R8 |
| 1 | 100K 100k | R_0603_1608Metric | R10 |
| 1 | 10 | R_2010_5025Metric_Pad1.40x2.65mm_HandSolder | R11 |
| 1 | 10 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12 |
CurrentSource design files
The KiCad project lives in the esl-epfl/CHEEP-boards repository on GitHub; these links point at the commit this page was built from.
CurrentSource: common questions
How big is the CurrentSource PCB?
The CurrentSource measures 15.3 × 45.8 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the CurrentSource?
34 components, from 27 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 CurrentSource design files?
From the esl-epfl/CHEEP-boards 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 CurrentSource design in my own project?
The repository has no license, so all rights stay with esl-epfl. Use it as a reference, and ask the author before reusing the design.
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