Analog front end
About the Analog front end PCB
Analog front end is an open source PCB design by AllenNeuralDynamics, published on GitHub under the MIT license. It is a 4-layer board measuring 61.5 × 21 mm, with 54 components from 32 distinct parts.
Other key parts include the LTC6269IMS8E-10, REF3433QDBVRQ1, LM27762, AD9833xRM and LTC6263. By type, the board carries 24 capacitors, 18 resistors, 5 ICs, 4 connectors, 1 crystal and 1 diode.
From the project
0360: an ephys-compliant capacitive lick detector
An ephys-compliant lick detector based on measured change in capacitance.
These printed circuit boards are made on-demand.
You will also need: Pololu 6-Pin SH Cable, 25cm long Stainless Steel Lick Tube, 18 Gauge (any conductive lick tube will work!) 3D Printed Enclosure Walls and Laser Cut Lids right click the component to export each part.
Once you receive boards, you will need to upload the firmware from the latest release.
Main components on the Analog front end
Analog front end bill of materials (BOM)
54 components, 32 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LTC6269IMS8E-10 Analog Devices | MSOP-8-1EP_3x3mm_P0.65mm_EP1.68x1.88mm | U2 |
| 1 | REF3433QDBVRQ1 Texas Instruments | SOT-23-6 | U3 |
| 1 | LM27762 Texas Instruments | WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65_ThermalVias | U6 |
| 1 | AD9833xRM Analog Devices Inc. | MSOP-10_3x3mm_P0.5mm | U7 |
| 1 | LTC6263 Analog Devices Inc. | MSOP-16_3x4mm_P0.5mm | U8 |
| 1 | ECS-TXO-2016 ECS Inc. | Crystal_SMD_2016-4Pin_2.0x1.6mm | X1 |
| 2 | Conn_01x20_Female | PinHeader_1x20_P2.54mm_Vertical | J1, J2 |
| 1 | Conn_Coaxial RF Solutions | SMA_Samtec_SMA-J-P-X-ST-EM1_EdgeMount | J3 |
| 1 | Conn_Triaxial Cinch Connectivity Solutions Trompeter | TRB_Trompeter_CBBJR79A_Horizontal | J6 |
| 1 | D_TVS onsemi | D_0201_0603Metric_Pad0.64x0.40mm_HandSolder | D1 |
| 1 | L_Coupled_1423 TDK Corporation | L_CommonModeChoke_TDKCorporation_1210 | L1 |
| 4 | 10uF Murata Electronics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C12, C13 |
| 8 | 100nF Walson Technology Corporation | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C4, C10, C27, C30, C32, C33, C34, C35 |
| 1 | 22uF Samsung Electro-Mechanics | C_0805_2012Metric | C5 |
| 1 | 1uF Murata Electronics | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6 |
| 1 | 4.7uF Samsung Electro-Mechanics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 2 | 2.2uF Murata Electronics | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | 10nF Yageo | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C25, C31 |
| 1 | 10uF Kemet | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C26 |
| 4 | 160pF Murata Electronics | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C41, C42, C43, C44 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1M Panasonic Electronic Components | R_0805_2012Metric | R4 |
| 2 | 4K7 Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R7, R8 |
| 1 | 54K9 Yageo | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 2 | 51K Panasonic Electronic Components | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R14 |
| 1 | 53K6 Yageo | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 3 | 100K Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R18, R36, R41 |
| 1 | 3K2 Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R19 |
| 1 | 100K Panasonic Electronic Components | R_0805_2012Metric | R23 |
| 2 | 49K9 Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R34, R39 |
| 2 | 1K02 Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R35, R40 |
| 1 | 100 Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R42 |
| 1 | 10K Yageo | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R43 |
Analog front end design files
The KiCad project lives in the AllenNeuralDynamics/harp.device.lickety-split repository on GitHub; these links point at the commit this page was built from.
Analog front end: common questions
How big is the Analog front end PCB?
The Analog front end measures 61.5 × 21 mm, has 4 copper layers and is 1.567 mm thick.
How many components are on the Analog front end?
54 components, from 32 distinct parts. The full bill of materials is listed on this page.
Where can I download the Analog front end design files?
From the AllenNeuralDynamics/harp.device.lickety-split repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Analog front end design in my own project?
Yes, under the terms of its MIT license, which AllenNeuralDynamics chose for the repository.
