4 layers45.2 × 40.4 mm

Logic analyzer
cheyao/ch32-logic-analyzer
200MHz USB 3.1 logic analyzer and 20MHz ADC w/ pulseview
100 parts4
Boards in 1 GitHub repository, designed in KiCad, that use the LMV321IDCKT by Texas Instruments (-40℃~+125℃ 1 1.7mV 11nA 130uA 1MHz 1V/us 2.7V~5.5V 39nV/√Hz@1kHz 40mA 5nA 5uV/℃ 63dB Rail-to-rail output SC-70-5 Operational Amplifier ROHS). See how each wires it, with its parts, size, README and files; the LMV321IDCKT’s symbol, footprint and pinout are on its own page.

cheyao/ch32-logic-analyzer
200MHz USB 3.1 logic analyzer and 20MHz ADC w/ pulseview