6 layers65 × 55.8 mm
AES42HAT
s13n/AES42HAT
A digital audio interface in the shape of a Raspberry Pi Hat for AES42 microphones and more.
232 parts1
2 layers38.1 × 25.4 mm
Analog Frontend
kelu124/Analog_Frontend4An analog circuit that consists of a transmitter and receiver for an ultrasound system.
- Size
- 38.1 × 25.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 40
- Pads
- 140
- Tracks, vias
- 343, 18
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 1 May 2018
- Updated
- 14 Mar 2018
Overview
Analog Frontend is an open-source printed circuit board by kelu124, from the kelu124/Analog_Frontend repository on GitHub. It is a 2-layer board of 38.1 × 25.4 mm with 52 parts on 40 nets, routed with 343 tracks and 18 vias.
It is built around the LTC5507ES6, MD0100N8-G and BZX84C6V2L, with the BAV99T and CX2041NLT among its other parts. Its parts include 20 capacitors, 7 resistors, 7 inductors, 5 connectors and 3 ICs.
Main components
5
LTC5507ES6
SOT23-6100kHz to 1GHz RF Power DetectorAnalog DevicesUncategorised
MD0100N8-G
SOT-89-3-40℃~+125℃ SOT-89-3 Interface - Specialized ROHSMicrochip TechnologyInterface - Specialized
BZX84C6V2L
SOT-23-65℃~+150℃ 1 Independent 10Ω 250mW 3uA 5.8V~6.6V 6.2V SOT-23 Zener Diodes ROHSonsemiZener DiodesBAV99T
SOT-523-55℃~+150℃ 1.25V@150mA 150mW 2A 2uA@75V 4ns 75mA 85V SOT-523 Switching Diodes ROHSTWGMCSwitching Diodes
CX2041NLT
SMD-5P-28dB -40℃~+85℃ 0.8dB 2.79mm 3.81mm 3.81mm 50kHz~450MHz 75Ω:75Ω SMD-5P Balun ROHSPulse ElecBalun
README
README.mdAnalog Frontend PCB
This folder contains the design files for the analog circuitry required for a single channel of an ultrasound imaging 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.
Bill of Materials
See Analog_Frontend.html.
Changelog
v1.0Initial designv1.1v1.2v1.3Added a row of header pins and silkscreened labelsv1.3-docAdded documentationv2.0Minitiarized designv2.1bSingle transistor transmitterv2.2_op1Single transistor transmitter with higher output powerv2.2_op2Push-pull transmitter using DMN2004K and DMP2004K MOSFETsv2.2_op3(Work in Progress) Transmitter using the MD1213 and TC6320 ultrasound transmitter chips
Each version can be accessed in this repository through the git tag system.
Credits
Designed by William Meng, Cindy Xiao, and Ruoyu Sheng.
The VGA subcircuit design was adapted from the AD8331 evaluation board.
Community-developed KiCAD symbols and models:
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 0.1µF | Capacitors_SMD:C_0603 | C11, C12, C13, C14, C15, C16, C17, C23, CINH1, CLMD1 |
| 5 | 120nH FB | Resistors_SMD:R_0603 | L2, L3, L4, L5, L6 |
| 3 | 0.1u | Capacitors_SMD:C_0603 | C1, C2, C3 |
| 3 | Screw_Terminal_1x01 | custom:SCREWM3 | J2, J4, J6 |
| 2 | 100 | Resistors_SMD:R_0603 | R8, R9 |
| 2 | 1nF | Capacitors_SMD:C_0603 | C18, C19 |
| 2 | 237 | Resistors_SMD:R_0603 | R6, R10 |
| 2 | BZX84C6V2L | Diodes_SMD:D_SMB | D3, D4 |
| 1 | .01u | Capacitors_SMD:C_0805 | C26 |
| 1 | .35u | Inductors_SMD:L_0603 | L7 |
| 1 | 100 | Resistors_SMD:R_0805 | R1 |
| 1 | 18nF | Capacitors_SMD:C_0603 | CFB1 |
| 1 | 1n | Capacitors_SMD:C_0603 | C5 |
| 1 | 1u | Inductors_SMD:L_0603 | L1 |
| 1 | 2.2nF | Capacitors_SMD:C_0603 | C21 |
| 1 | 200 | Resistors_SMD:R_0603 | Rdamp1 |
| 1 | 22pF | Capacitors_SMD:C_0603 | CSH1 |
| 1 | 274 | Resistors_SMD:R_0603 | RFB1 |
| 1 | 4.02 | Resistors_SMD:R_0603 | R12 |
| 1 | 470pF | Capacitors_SMD:C_0603 | C22 |
| 1 | 6.8nF | Capacitors_SMD:C_0603 | C20 |
| 1 | 68 | Resistors_SMD:R_0805 | R11 |
| 1 | AD8331 | custom:QSOP-20_3.9x8.6mm_Pitch0.64mm | U5 |
| 1 | BAV99T | custom:SOT-523 | D1 |
| 1 | CONN_02X03 | Pin_Headers:Pin_Header_Angled_2x04_Pitch2.54mm | J1 |
| 1 | CONN_COAXIAL | custom:SAM8857-ND | J7 |
| 1 | CX2041NLT | custom:CX2041NLT | T1 |
| 1 | LTC5507 | custom:TSOT-23-6_MK06A | U6 |
| 1 | MD0100N8 | TO_SOT_Packages_SMD:SOT89-3_Housing_Handsoldering | U2 |
| 1 | Piezo | Pin_Headers:Pin_Header_Angled_1x02_Pitch2.54mm | LS1 |
| 1 | Q_NMOS_SDG | custom:SOT-23 | Q2 |
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Questions
How big is the Analog Frontend PCB?
It measures 38.1 × 25.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Analog Frontend use?
52 parts, built around the LTC5507ES6, MD0100N8-G, BZX84C6V2L and BAV99T. 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 Analog Frontend KiCad files?
From the kelu124/Analog_Frontend repository on GitHub, at the commit this page was made from: the board is Analog_Frontend.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Analog Frontend design in my own project?
Its repository states no licence, so its author keeps all rights: ask kelu124 before reusing the design.