molecule
AM/FM Receiver Molecule
Public Made by Adomby adom
USB-powered AM/FM receiver on an Adom Molecule: discrete BJT and op-amp superhet (10.7 MHz and 455 kHz IFs), STM32G0B1 tuning, self-calibration and USB audio over one USB-C cable. 96 x 96 mm pin grid, 4 layers, KiCad 10.
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(kicad_sch
(version 20251024)
(generator "eeschema")
(generator_version "10.0")
(uuid "a79cce82-c228-5418-8ad5-e8dc69e28ad8")
(paper "A3")
(title_block
(title "FM 455 kHz limiter & pulse-count discriminator")
(date "2026-10-02")
(rev "B (molecule)")
(company "Adom")
(comment 1 "4-layer PCB, JLCPCB-compatible rules")
(comment 2 "Generated from tools/design.py (single source of truth)")
)
(lib_symbols
(symbol "Amplifier_Operational:TLV9062xD"
(pin_names (offset 0.127))
(exclude_from_sim no)
(in_bom yes)
(on_board yes)
(in_pos_files yes)
(duplicate_pin_numbers_are_jumpers no)
(property "Reference" "U"
(at 2.54 6.35 0)
(show_name no)
(do_not_autoplace no)
(effects (font (size 1.27 1.27)) (justify left))
)
(property "Value" "TLV9062xD"
(at 2.54 3.81 0)
(show_name no)
(do_not_autoplace no)
(effects (font (size 1.27 1.27)) (justify left))
)
(property "Footprint" "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm"
(at 2.54 0 0)
(show_name no)
(do_not_autoplace no)
(hide yes)
(effects (font (size 1.27 1.27)))
)
(property "Datasheet" "https://www.ti.com/lit/ds/symlink/tlv9062.pdf"
(at 6.35 3.81 0)
(show_name no)
(do_not_autoplace no)
(hide yes)
(effects (font (size 1.27 1.27)))
)
(property "Description" "Dual operational amplifier, 300 uV Offset, SOIC-8"
(at 0 0 0)
(show_name no)
(do_not_autoplace no)
(hide yes)
(effects (font (size 1.27 1.27)))
)
(property "ki_locked" ""
(at 0 0 0)
(show_name no)
(do_not_autoplace no)
(effects (font (size 1.27 1.27)))
)
(property "ki_keywords" "dual op-amp low power"
(at 0 0 0)
(show_name no)
(do_not_autoplace no)
(hide yes)
(effects (font (size 1.27 1.27)))
)
(property "ki_fp_filters" "SOIC*3.9x4.9mm*P1.27mm*"
(at 0 0 0)
(show_name no)
(do_not_autoplace no)
(hide yes)
(effects (font (size 1.27 1.27)))
)
(symbol "TLV9062xD_1_1"
(polyline
(pts (xy 5.08 0) (xy -5.08 5.08) (xy -5.08 -5.08) (xy 5.08 0))
(stroke (width 0.254) (type default))
(fill (type background))
)
(pin output line
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