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Blaze-Pascal
Custom 2-channel digital oscilloscope DAQ with 20MHz bandwidth. Built with a custom KiCad analog front-end (AFE) PCB, Gowin FPGA (Tang Nano 9K) for high-speed signal buffering (VHDL), and an RPi Pico MCU for SCPI-like control. Includes a simple Python GUI for data visualization.
| Reference | Value | Description |
|---|---|---|
| Q1-Q3 | BSS138 | SOT-23 N-MOSFET enchancement mode transistor, 50V, 200mA, 300mW, Alternate KiCAD Library |
| Q101,Q201 | AO3400A | SOT-23 N-MOSFET enchancement mode transistor, 30V, 5.7A, 1.4W, Alternate KiCAD Library |
| U1,U2 | OPA2171 | Dual Low-Voltage Rail-to-Rail Output Operational Amplifiers, SOIC-8/SSOP-8 |
| U3 | CDCV304 | 0-200 MHz 1:4 Clock Buffer, PCI-X Compliant, TSSOP-8 |
| U4,U5 | MCP4551T-103E_MS | |
| U6 | MCP4728 |
| 12-bit digital to analog converter, quad output, 2.048V internal reference, integrated EEPROM, I2C interface |
| U7 | Tang_Nano_9K | Tang Nano 9K FPGA |
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| U8 | AD9288BSTZ-40 |
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| U9,U10 | AMS1117-3.3 | 1A Low Dropout regulator, positive, 3.3V fixed output, SOT-223 |
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| U101,U201 | CPC1017N | Form A, Solid State Relay (Photo MOSFET) 60V, 0.1A, 16Ohm, SO-4 |
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| U102,U202 | AD8132ARMZ | MSOP-8 Fast Differential Amplifier, 400MHz Bandwidth, 2000V/μs Slew rate, 3.5mV Offset, Alternate KiCAD Library |
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| U103,U203 | ADA4817-1ARDZ | SO-8 JFET Ultrafast Operational Amplifier, 1GHz GBW, 870V/µs Slew Rate, 2mV Offset, Alternate KiCAD Library |
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| U104,U204 | AD8330ARQZ | QSOP-16 Variable Gain Amplifier, DC to 150MHz, 2dB Absolute Gain error, Alternate KiCAD Library |
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| C1-C17,C27,C30,C101,C102,C107,C108,C110,C112,C116-C118,C201,C202,C207,C208,C210,C212,C216-C218 | 100n | Unpolarized capacitor |
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| C18-C20,C28,C29 | 22u | Polarized capacitor |
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| C21,C22 | 150p | Unpolarized capacitor |
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| C23,C24 | 22p | Unpolarized capacitor |
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| C25,C26,C106,C111,C206,C211 | 10u | Unpolarized capacitor |
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| C105,C205 | 22n | Unpolarized capacitor |
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| C109,C209 | 1.5-3pF | Trimmable capacitor |
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| C113,C213 | DNP | Unpolarized capacitor |
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| C114,C115,C214,C215 | 15p | Unpolarized capacitor |
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| D101,D201 | BAV99 | SOT-23 Dual diode, series, Small Signal, Fast Switching, 100V, 215mA, 4ns, Alternate KiCad Library |
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| D102,D202 | SS14 | 40V 1A Schottky Diode, SMA |
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| J1 | PWR_Conn | Generic connector, single row, 01x06, script generated |
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| J2,J5,J102,J202 | MCU_Conn | Generic connector, single row, 01x03, script generated,Generic connector, single row, 01x05, script generated |
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| J3 | GEN_IN | coaxial connector (BNC, SMA, SMB, SMC, Cinch/RCA, LEMO, ...) |
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| J4 | Conn_02x24_Odd_Even | Generic connector, double row, 02x24, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J101,J201 | Conn_Coaxial | coaxial connector (BNC, SMA, SMB, SMC, Cinch/RCA, LEMO, ...) |
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| K101,K201 | G6K-2 | Miniature 2-pole relay, Single-side Stable |
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| L1-L4 | 330n | Inductor |
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| R1-R5,R8-R12,R14-R17,R104,R105,R115,R116,R118,R122,R123,R126,R204,R205,R215,R216,R218,R222,R223,R226 | 10k | Resistor |
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| R6,R7,R13,R18-R23,RN1-RN4 | 0 | 4 resistor network, parallel topology,Resistor |
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| R24,R28,R31,R33,R106,R206 | 1k | Resistor |
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| R25,R29,R30,R32,R124,R224 | 4.7k | Resistor |
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| R26,R27,R112-R114,R212-R214 | 100R | Resistor |
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| R101,R109,R201,R209 | 49.9 | Resistor |
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| R102,R103,R107,R108,R202,R203,R207,R208 | 499 | Resistor |
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| R110,R111,R210,R211 | 50-100 | Resistor |
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| R117,R217 | 680k | Resistor |
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| R119,R219 | 220k | Resistor |
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| R120,R220 | 100k | Resistor |
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| R121,R221 | 1M | Resistor |
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| R125,R225 | 3.3k | Resistor |
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| TP1,TP2 | 5V | test point (alternative probe-style design) |
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| TP3 | -5V | test point (alternative probe-style design) |
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| TP4-TP7 | TestPoint_Probe | test point (alternative probe-style design) |
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| TP8 | 3.3V | test point (alternative probe-style design) |
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| Y1 | 9ESC400C0033L | CMOS Clock Oscillator 1 to 75 MHz |
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