Batt Rev20
About the Batt Rev20 PCB
Batt Rev20 is an open source PCB design by curtisseizert, published on GitHub under the MIT license. It is a 2-layer board measuring 112 × 100 mm, with 53 components from 21 distinct parts.
Other key parts include the BQ77915-08. By type, the board carries 24 resistors, 9 transistors, 8 capacitors, 4 battery holders, 4 diodes and 2 connectors.
It belongs with the audio and power & battery designs in this gallery.
From the project
A 0.01Hz-1+MHz low noise amplifier
Current Status -------------- I have made two of these and have done a fair amount of testing to nail down root causes of some of the issues (see later in this readme) that have proven to be a bit of a nuisance. I am also moving things around a bit on the battery and battery charger boards to allow a board-to-board connection of the two and increase the clearance between the battery board and the amplifier board. I have also tested improvements to the input stage that significantly reduce the low frequency noise, lowering the 1/f corner to <1 Hz. These are detailed in the issues section #7.
Main components on the Batt Rev20
Batt Rev20 bill of materials (BOM)
53 components, 21 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ77915-08 | TSSOP-24_4.4x7.8mm_P0.65mm | U1 |
| 4 | BSS123 | SOT-23 | Q1, Q4, Q6, Q7 |
| 3 | SiS862ADN | Vishay_PowerPAK_1212-8_Single | Q2, Q3, Q9 |
| 1 | BSS84 | SOT-23 | Q5 |
| 1 | SiS443DN | Vishay_PowerPAK_1212-8_Single | Q8 |
| 1 | Molex Micro-Fit 3.0 43045-0610 | Molex_Micro-Fit_3.0_43045-0610_2x03-1MP_P3.00mm_Horizontal | J1 |
| 1 | Micro-Fit 3.0 43650-0310 | Molex_Micro-Fit_3.0_43650-0310_1x03-1MP_P3.00mm_Horizontal | J2 |
| 4 | Battery_Cell | BatteryHolder_Keystone246_21700 | BT1, BT2, BT3, BT4 |
| 1 | 103-AT | R_0603_1608Metric | TH1 |
| 1 | RB751V40 | D_SOD-323 | D1 |
| 3 | DZ2S100X0L | D_SOD-523 | D2, D3, D4 |
| 6 | 1uF | C_0603_1608Metric_red_outline | C1, C2, C3, C4, C5, C8 |
| 2 | 0.1uF | C_0603_1608Metric_red_outline | C6, C7 |
| 6 | 1k | R_0603_1608Metric_red | R1, R6, R11, R14, R21, R22 |
| 4 | 33R | R_0603_1608Metric_red | R2, R3, R4, R5 |
| 1 | 0R01 | R_1206_3216Metric_red | R7 |
| 2 | 100R | R_0603_1608Metric_red | R8, R9 |
| 7 | 1M | R_0603_1608Metric_red | R10, R12, R15, R18, R20, R23, R24 |
| 2 | 10k | R_0603_1608Metric_red | R13, R17 |
| 1 | 100k | R_0603_1608Metric_red | R16 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 470k | R_0603_1608Metric_red | R19 |
Batt Rev20 design files
The KiCad project lives in the curtisseizert/LowFreqLNA repository on GitHub; these links point at the commit this page was built from.
Batt Rev20: common questions
How big is the Batt Rev20 PCB?
The Batt Rev20 measures 112 × 100 mm, has 2 copper layers and is 0.57 mm thick.
How many components are on the Batt Rev20?
53 components, from 21 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 Batt Rev20 design files?
From the curtisseizert/LowFreqLNA 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 Batt Rev20 design in my own project?
Yes, under the terms of its MIT license, which curtisseizert chose for the repository.
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