
LevelShifter
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software

Para la entrada diferencial, el fabricante recomienda dos configuraciones dependiendo el modo en el que se quiera utilizar el ADC.
ADS1271 pcb is an open-source printed circuit board by LMproyects, from the LMproyects/PCB_ADS1271 repository on GitHub. It is a 2-layer board with 21 parts on 19 nets, routed with 116 tracks and 0 vias.
It is built around the ADS1271IPW and LM336Z-2.5/T7. Its parts include 8 capacitors, 6 resistors, 3 ICs and 3 connectors.
Vamos a trabajar con comunicación SPI, adquiriendo datos de forma continua (SYNC-PDWN='1')
Para trabajar con SPI
Para el diseño del esquemático que será utilizado en el PCB de prueba, se tiene en cuenta el circuito recomendado por el fabricante Texas Instruments. A continuación, puede verse el circuito mencionado.
Para la entrada diferencial, el fabricante recomienda dos configuraciones dependiendo el modo en el que se quiera utilizar el ADC.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 50 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R2, R3, R4, R5, R6 |
| 2 | 10 uf | Capacitors_THT:CP_Radial_D5.0mm_P2.50mm | C6, C7 |
| 2 | 100pF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C3, C4 |
| 1 | 0,1 uf | Capacitors_THT:CP_Radial_D5.0mm_P2.50mm | C2 |
| 1 | 0.1 uF | Capacitors_THT:CP_Radial_D5.0mm_P2.50mm | C8 |
| 1 | 0.33 uf | Capacitors_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | 1nF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C5 |
| 1 | 680 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1 |
| 1 | ADS1271 | Housings_SSOP:TSSOP-16_4.4x5mm_Pitch0.65mm | U3 |
| 1 | CONN_01X02_ent_dif | Connectors_Molex:Molex_SPOX-5267_22-03-5025_02x2.54mm_Straight | J2 |
| 1 | Conn_01x06_Male_fpga_pins | Connectors_Molex:Molex_SPOX-5267_22-03-5065_06x2.54mm_Straight | J3 |
| 1 | Jumper_NC_Dual_selec_modo | Connectors_Molex:Molex_SPOX-5267_22-03-5035_03x2.54mm_Straight | JP1 |
| 1 | LM336z2.5 | TO_SOT_Packages_THT:TO-92_Inline_Narrow_Oval | U2 |
| 1 | LM7805_us | TO_SOT_Packages_THT:TO-220-3_Vertical | U1 |
| 1 | conector +7V | Connectors_Molex:Molex_SPOX-5267_22-03-5025_02x2.54mm_Straight | J1 |

gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software

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21 parts, built around the ADS1271IPW and LM336Z-2.5/T7. 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.
From the LMproyects/PCB_ADS1271 repository on GitHub, at the commit this page was made from: the board is ADS1271_pcb/ADS1271_pcb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask LMproyects before reusing the design.