component
CLM331N
Public Made by Adomby adom
CHIPLON Voltage-To-Frequency / Frequency-To-Voltage Converters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661
{
"schema_version": 1,
"type": "component",
"slug": "clm331n",
"title": "CLM331N",
"brief": "CHIPLON Voltage-To-Frequency / Frequency-To-Voltage Converters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"adc-dac-data conversion",
"clm331n",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "CLM331N",
"manufacturer": "CHIPLON",
"package": "DIP-8",
"pin_count": 8,
"category": "ADC/DAC/Data Conversion",
"subcategory": "Voltage-To-Frequency / Frequency-To-Voltage Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0c0437b0db1e469fa3d60885a1fe04df.pdf",
"parts": {
"symbol": "clm331n.kicad_sym",
"footprint": "clm331n.kicad_mod",
"model_3d": "clm331n-hero.glb",
"model_3d_plain": "clm331n-etched.glb",
"model_3d_step": "clm331n-etched.step",
"model_3d_step_plain": "clm331n.step",
"lbr": "clm331n.lbr"
},
"distributor_links": {
"lcsc": "C437272"
},
"distributor_check": {
"checked_at": "2026-10-22T21:57:50Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "IOUT",
"type": "output",
"description": "Current output from the switched current source; output current is 136 µA typ (116-156 µA) with RS = 14 kΩ for CLM331."
},
{
"number": "2",
"name": "IREF",
"type": "input",
"description": "Reference current input; the pin is regulated to 1.90 VDC (1.7-2.08 V for CLM331) and sets i = 1.90 V / RS."
},
{
"number": "3",
"name": "FOUT",
"type": "output",
"description": "Frequency output, an open-collector output that requires a pull-up resistor; VSAT is 0.15 V typ at 5 mA and output current is limited to under 50 mA."
},
{
"number": "4",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "5",
"name": "RC",
"type": "input",
"description": "R-C filter/timing network input; the timer resets when this pin reaches 2/3 of VS (threshold 0.667 × VS typ)."
},
{
"number": "6",
"name": "THRESH",
"type": "input",
"description": "Threshold input to the input comparator; the comparator triggers the timer when pin 7 is above pin 6."
},
{
"number": "7",
"name": "COMPIN",
"type": "input",
"description": "Comparator circuit input; common-mode range is -0.2 V to VCC - 2 V."
},
{
"number": "8",
"name": "VS",
"type": "power_in",
"description": "Supply voltage, operating range 4 V to 40 V (absolute maximum 40 V)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The pin table was extracted from garbled text (columns out of order). Pin numbers and names match th; The datasheet is inconsistent. The thermal table is headed LM567C, and the electrical table has an L; The text describes pin 7 as the input comparator's positive input and pin 6 as the threshold, and it"
],
"pages_sent": 18,
"cost_usd": 0.0927,
"at": "2026-10-22T21:57:38"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/0c0437b0db1e469fa3d60885a1fe04df.pdf",
"pages": 18,
"sha256": "4c88c10b1e1c9b6a",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 8,
"described": 8,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "clm331n.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
"extents_mm": [
7.874,
9.27,
6.98
],
"zmin_mm": -3.3,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "clm331n-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
"extents_mm": [
7.874,
9.27,
6.98
],
"zmin_mm": -3.3,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b54304a9545aab9ed701807f8b9e758624aa0b31aa9b272c0efa488956690bae",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "CHIPLON",
"Package": "DIP-8",
"Category": "ADC/DAC/Data Conversion",
"Pins": "8"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "4c88c10b1e1c9b6ac8cf239d9b7bfb831dd4e2697e1b59616237eec2d1d7e7f1",
"rows": [
{
"name": "Supply voltage",
"symbol": "VS",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Input voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.2,
"typ": null,
"max": null,
"conditions": "max is +VS",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead temperature (soldering, 10s) PDIP",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "PDIP, 10s",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD HBM",
"symbol": "V(ESD)",
"kind": "absolute_maximum",
"unit": "V",
"min": -500,
"typ": null,
"max": 500,
"conditions": "Human body model",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Supply voltage",
"symbol": "VS",
"kind": "recommended_operating",
"unit": "V",
"min": 4,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": 0,
"typ": null,
"max": 70,
"conditions": "CLM331N per ordering information",
"source_page": 17,
"source": "datasheet"
},
{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 100,
"max": null,
"conditions": "P (PDIP) 8-pin",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Package dissipation at 25°C",
"symbol": "",
"kind": "thermal",
"unit": "W",
"min": null,
"typ": null,
"max": 1.25,
"conditions": "25°C",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VFC nonlinearity",
"symbol": "",
"kind": "electrical",
"unit": "% Full-Scale",
"min": null,
"typ": 0.003,
"max": 0.01,
"conditions": "4.5 V ≤ VS ≤ 20 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VFC nonlinearity over temperature",
"symbol": "",
"kind": "electrical",
"unit": "% Full-Scale",
"min": null,
"typ": 0.006,
"max": 0.02,
"conditions": "TMIN ≤ TA ≤ TMAX",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VFC nonlinearity, Figure 14 circuit",
"symbol": "",
"kind": "electrical",
"unit": "% Full-Scale",
"min": null,
"typ": 0.024,
"max": 0.14,
"conditions": "VS = 15V, f = 10Hz ~ 11kHz",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain (conversion accuracy scale factor)",
"symbol": "",
"kind": "electrical",
"unit": "kHz/V",
"min": 0.9,
"typ": 1,
"max": 1.1,
"conditions": "VIN = -10V, RS = 14 kΩ",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain temperature stability",
"symbol": "",
"kind": "temperature_coefficient",
"unit": "ppm/°C",
"min": null,
"typ": 30,
"max": 150,
"conditions": "TMIN ≤ TA ≤ TMAX, 4.5 V ≤ VS ≤ 20 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain change with VS",
"symbol": "",
"kind": "electrical",
"unit": "%/V",
"min": null,
"typ": 0.01,
"max": 0.1,
"conditions": "4.5 V ≤ VS ≤ 10 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain change with VS",
"symbol": "",
"kind": "electrical",
"unit": "%/V",
"min": null,
"typ": 0.006,
"max": 0.06,
"conditions": "10 V ≤ VS ≤ 40 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain stability vs time (1000 hours)",
"symbol": "",
"kind": "electrical",
"unit": "% Full-Scale",
"min": null,
"typ": 0.02,
"max": null,
"conditions": "TMIN ≤ TA ≤ TMAX",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input comparator offset voltage",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 3,
"max": 10,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input comparator offset voltage over temperature",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 4,
"max": 14,
"conditions": "CLM231/CLM331, TMIN ≤ TA ≤ TMAX",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input comparator bias current",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": -80,
"max": -300,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input comparator offset current",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 8,
"max": 100,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Common-mode range",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": -0.2,
"typ": null,
"max": null,
"conditions": "TMIN ≤ TA ≤ TMAX; upper limit VCC - 2",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Timer threshold voltage, pin 5",
"symbol": "",
"kind": "electrical",
"unit": "×VS",
"min": 0.6,
"typ": 0.667,
"max": 0.7,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Timer input bias current, pin 5 (all devices)",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 10,
"max": 100,
"conditions": "VS = 15V, 0 V ≤ VPIN5 ≤ 9.9 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Timer input bias current, pin 5",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 200,
"max": 1000,
"conditions": "VS = 15V, VPIN5 = 10V, CLM231/CLM331",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VSAT pin 5 (reset)",
"symbol": "VSAT",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.22,
"max": 0.5,
"conditions": "I = 5mA",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Current source output current",
"symbol": "",
"kind": "electrical",
"unit": "μA",
"min": 116,
"typ": 136,
"max": 156,
"conditions": "RS = 14 kΩ, VPIN1 = 0",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Current source change with voltage",
"symbol": "",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 0.2,
"max": 1,
"conditions": "0V ≤ VPIN1 ≤ 10V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Current source off leakage",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 0.02,
"max": 10,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Current source off leakage at TMAX",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 2,
"max": 50,
"conditions": "TA = TMAX",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Reference voltage (pin 2)",
"symbol": "",
"kind": "electrical",
"unit": "VDC",
"min": 1.7,
"typ": 1.89,
"max": 2.08,
"conditions": "CLM331",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Reference stability vs temperature",
"symbol": "",
"kind": "temperature_coefficient",
"unit": "ppm/°C",
"min": null,
"typ": 60,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Logic output VSAT (pin 3)",
"symbol": "VSAT",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.15,
"max": 0.5,
"conditions": "I = 5mA",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Logic output VSAT (pin 3)",
"symbol": "VSAT",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.1,
"max": 0.4,
"conditions": "I = 3.2mA (2 TTL loads), TMIN ≤ TA ≤ TMAX",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Logic output off-state leakage",
"symbol": "",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 0.05,
"max": 1,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Supply current",
"symbol": "IS",
"kind": "electrical",
"unit": "mA",
"min": 1.5,
"typ": 3,
"max": 6,
"conditions": "VS = 5V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Supply current",
"symbol": "IS",
"kind": "electrical",
"unit": "mA",
"min": 2,
"typ": 4,
"max": 8,
"conditions": "VS = 40V",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"clm331n"
],
"discovery_pitch": "CLM331N (CHIPLON) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"clm331n.kicad_sym",
"clm331n.kicad_mod",
"clm331n.glb",
"clm331n.step",
"clm331n.lbr",
"docs/hero.png",
"docs/clm331n-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"clm331n-hero.glb",
"clm331n-hero.overlay.json",
"clm331n-etched.glb"
],
"visibility": {
"public": true
}
}