4 layers65.1 × 50 mm
4 layers116.8 × 68.6 mm
Voltage preamp
kpezeshki/voltage_preamplow-noise preamp for Falson Lab
- Size
- 116.8 × 68.6 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 16
- Pads
- 105
- Tracks, vias
- 223, 310
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 4 May 2021
- Updated
- 9 May 2021
Overview
Voltage preamp is an open-source printed circuit board by kpezeshki, from the kpezeshki/voltage_preamp repository on GitHub. It is a 4-layer board of 116.8 × 68.6 mm with 37 parts on 16 nets, routed with 223 tracks and 310 vias.
It is built around the OPA211 and LMP7721MA. Its parts include 12 resistors, 9 capacitors, 7 connectors and 5 ICs. It belongs with the audio and music boards of this library.
Main components
2
OPA211
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+85℃ 0.8V/us 1.1nV/√Hz@1kHz 114dB 1MHz 2 25nA 30mA 30uV 350nV/℃ 4.5V~36V 60nA 790uA EMI filtering/RF suppression、Built-in compensation、Enable/shutdown function Rail-to-rail output SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op AmpsLMP7721MA
SOIC-8-40℃~+125℃ 0.003pA 0.006pA 1 1.3mA 1.5uV/℃ 1.8V~5.5V 100dB 12.76V/us 17MHz 46mA 50uV 6.5nV/√Hz@1kHz Rail-to-rail output Reverse-phase input protection SOIC-8 Precision Op Amps ROHSTexas InstrumentsPrecision Op Amps
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3, C5, C7, C9 |
| 6 | R | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R7, R8, R9, R10 |
| 3 | CP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | C4, C6, C8 |
| 3 | Conn_01x01_Male | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J2, J3, J4 |
| 3 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H3, H4 |
| 3 | lmp7721 | amps:lmp7721 | U1, U2, U3 |
| 2 | 15k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11, R12 |
| 2 | Conn_Coaxial | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1, J5 |
| 2 | OPA211 | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U4, U6 |
| 1 | Conn_01x02_Male | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J7 |
| 1 | Conn_01x02_Male | Battery:BatteryHolder_Keystone_2479_3xAAA | J6 |
| 1 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H2 |
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Questions
How big is the Voltage preamp PCB?
It measures 116.8 × 68.6 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Voltage preamp use?
37 parts, built around the OPA211 and LMP7721MA. 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 Voltage preamp KiCad files?
From the kpezeshki/voltage_preamp repository on GitHub, at the commit this page was made from: the board is kicad/voltage_preamp.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Voltage preamp design in my own project?
Its repository states no licence, so its author keeps all rights: ask kpezeshki before reusing the design.