Analog Frontend
About the Analog Frontend PCB
Analog Frontend is an open source PCB design by kelu124, published on GitHub. It is a 2-layer board measuring 38.1 × 25.4 mm, with 52 components from 32 distinct parts.
Other key parts include the MD0100N8, AD8331 and LTC5507. By type, the board carries 18 capacitors, 7 inductors, 7 resistors, 5 connectors, 3 ICs and 3 diodes.
From the project
An analog circuit that consists of a transmitter and receiver for an ultrasound system.
Schematic: See the drawings folder for a high-resolution PDF version.
PCB: See the drawings folder for a full resolution PDF version, including each layer individually.
Each version can be accessed in this repository through the git tag system.
The VGA subcircuit design was adapted from the AD8331 evaluation board.
Community-developed KiCAD symbols and models:
SMA footprint SOT-523 footprint * Teensy symbols and Teensy footprints
Main components on the Analog Frontend
Analog Frontend bill of materials (BOM)
52 components, 32 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MD0100N8 | SOT89-3_Housing_Handsoldering | U2 |
| 1 | AD8331 | QSOP-20_3.9x8.6mm_Pitch0.64mm | U5 |
| 1 | LTC5507 | TSOT-23-6_MK06A | U6 |
| 1 | Q_NMOS_SDG | SOT-23 | Q2 |
| 1 | CONN_02X03 | Pin_Header_Angled_2x04_Pitch2.54mm | J1 |
| 3 | Screw_Terminal_1x01 | SCREWM3 | J2, J4, J6 |
| 1 | CONN_COAXIAL | SAM8857-ND | J7 |
| 1 | 18nF | C_0603 | CFB1 |
| 2 | 0.1µF | C_0603 | CINH1, CLMD1 |
| 1 | 22pF | C_0603 | CSH1 |
| 1 | Piezo | Pin_Header_Angled_1x02_Pitch2.54mm | LS1 |
| 1 | 274 | R_0603 | RFB1 |
| 1 | 200 | R_0603 | Rdamp1 |
| 1 | CX2041NLT | CX2041NLT | T1 |
| 1 | BAV99T | SOT-523 | D1 |
| 2 | BZX84C6V2L | D_SMB | D3, D4 |
| 1 | 1u | L_0603 | L1 |
| 5 | 120nH FB | R_0603 | L2, L3, L4, L5, L6 |
| 1 | .35u | L_0603 | L7 |
| 3 | 0.1u | C_0603 | C1, C2, C3 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1n | C_0603 | C5 |
| 8 | 0.1µF | C_0603 | C11, C12, C13, C14, C15, C16, C17, C23 |
| 2 | 1nF | C_0603 | C18, C19 |
| 1 | 6.8nF | C_0603 | C20 |
| 1 | 2.2nF | C_0603 | C21 |
| 1 | 470pF | C_0603 | C22 |
| 1 | .01u | C_0805 | C26 |
| 1 | 100 | R_0805 | R1 |
| 2 | 237 | R_0603 | R6, R10 |
| 2 | 100 | R_0603 | R8, R9 |
| 1 | 68 | R_0805 | R11 |
| 1 | 4.02 | R_0603 | R12 |
Analog Frontend design files
The KiCad project lives in the kelu124/Analog_Frontend repository on GitHub; these links point at the commit this page was built from.
Analog Frontend: common questions
How big is the Analog Frontend PCB?
The Analog Frontend measures 38.1 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Analog Frontend?
52 components, from 32 distinct parts. The full bill of materials is listed on this page.
Where can I download the Analog Frontend design files?
From the kelu124/Analog_Frontend repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Analog Frontend design in my own project?
The repository has no license, so all rights stay with kelu124. Use it as a reference, and ask the author before reusing the design.