component
INA4181A4QPWRQ1
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296
{
"schema_version": 1,
"type": "component",
"slug": "ina4181a4qpwrq1",
"title": "INA4181A4QPWRQ1",
"brief": "Texas Instruments Current Sense Amplifiers, TSSOP-20. 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",
"amplifiers-comparators",
"ina4181a4qpwrq1",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "INA4181A4QPWRQ1",
"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Amplifiers/Comparators",
"subcategory": "Current Sense Amplifiers",
"datasheet": "https://www.ti.com/cn/lit/gpn/ina181-q1",
"parts": {
"symbol": "ina4181a4qpwrq1.kicad_sym",
"footprint": "ina4181a4qpwrq1.kicad_mod",
"model_3d": "ina4181a4qpwrq1-hero.glb",
"model_3d_plain": "ina4181a4qpwrq1.glb",
"model_3d_step": "ina4181a4qpwrq1-etched.step",
"model_3d_step_plain": "ina4181a4qpwrq1.step",
"lbr": "ina4181a4qpwrq1.lbr"
},
"distributor_links": {
"lcsc": "C2866767",
"digikey": "2156-INA4181A4QPWRQ1-296-ND",
"mouser": "595-INA4181A4QPWRQ1"
},
"distributor_check": {
"checked_at": "2026-10-08T16:43:04Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "2156-INA4181A4QPWRQ1-296-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-INA4181A4QPWRQ1",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "REF1",
"type": "input",
"description": "Channel 1 reference input; the reference voltage must be set between 0 and VS."
},
{
"number": "2",
"name": "OUT1",
"type": "output",
"description": "Channel 1 output voltage."
},
{
"number": "3",
"name": "IN–1",
"type": "input",
"description": "Channel 1 current-sense amplifier negative input; for high-side use connect to the load side of the sense resistor, and for low-side use connect to the ground side of the sense resistor."
},
{
"number": "4",
"name": "IN+1",
"type": "input",
"description": "Channel 1 current-sense amplifier positive input; for high-side use connect to the bus-voltage side of the sense resistor, and for low-side use connect to the load side. The common-mode range is -0.2 V to 26 V."
},
{
"number": "5",
"name": "VS",
"type": "power_in",
"description": "Analog power supply pin, 2.7 V to 5.5 V."
},
{
"number": "6",
"name": "IN+2",
"type": "input",
"description": "Channel 2 current-sense amplifier positive input; for high-side use connect to the bus-voltage side of the sense resistor, and for low-side use connect to the load side. The common-mode range is -0.2 V to 26 V."
},
{
"number": "7",
"name": "IN–2",
"type": "input",
"description": "Channel 2 current-sense amplifier negative input; for high-side use connect to the load side of the sense resistor, and for low-side use connect to the ground side of the sense resistor."
},
{
"number": "8",
"name": "OUT2",
"type": "output",
"description": "Channel 2 output voltage."
},
{
"number": "9",
"name": "REF2",
"type": "input",
"description": "Channel 2 reference input; the reference voltage must be set between 0 and VS."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "No internal connection; this pin may be left floating or connected to any voltage between VS and ground."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "No internal connection; this pin may be left floating or connected to any voltage between VS and ground."
},
{
"number": "12",
"name": "REF3",
"type": "input",
"description": "Channel 3 reference input; the reference voltage must be set between 0 and VS."
},
{
"number": "13",
"name": "OUT3",
"type": "output",
"description": "Channel 3 output voltage."
},
{
"number": "14",
"name": "IN–3",
"type": "input",
"description": "Channel 3 current-sense amplifier negative input; for high-side use connect to the load side of the sense resistor, and for low-side use connect to the ground side of the sense resistor."
},
{
"number": "15",
"name": "IN+3",
"type": "input",
"description": "Channel 3 current-sense amplifier positive input; for high-side use connect to the bus-voltage side of the sense resistor, and for low-side use connect to the load side. The common-mode range is -0.2 V to 26 V."
},
{
"number": "16",
"name": "GND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "17",
"name": "IN+4",
"type": "input",
"description": "Channel 4 current-sense amplifier positive input; for high-side use connect to the bus-voltage side of the sense resistor, and for low-side use connect to the load side. The common-mode range is -0.2 V to 26 V."
},
{
"number": "18",
"name": "IN–4",
"type": "input",
"description": "Channel 4 current-sense amplifier negative input; for high-side use connect to the load side of the sense resistor, and for low-side use connect to the ground side of the sense resistor."
},
{
"number": "19",
"name": "OUT4",
"type": "output",
"description": "Channel 4 output voltage."
},
{
"number": "20",
"name": "REF4",
"type": "input",
"description": "Channel 4 reference input; the reference voltage must be set between 0 and VS."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet is the Chinese translation of TI's English document (SLYS018). TI states the translati; Pinout was cross-checked: the TSSOP-20 top-view figure (page 5) and the INA4181 column of the pin-fu"
],
"pages_sent": 31,
"cost_usd": 0.1429,
"at": "2026-10-08T16:42:34"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/ina181-q1",
"pages": 57,
"sha256": "4b84b5214b961c3a",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "ina4181a4qpwrq1.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ina4181a4qpwrq1-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "0f2c3ef5c5db42d3d87348b8fcefdfa6bb32397d969442c323666927ade72d92",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-20",
"Category": "Amplifiers/Comparators",
"Pins": "20"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ina4181a4qpwrq1"
],
"discovery_pitch": "INA4181A4QPWRQ1 (Texas Instruments) 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",
"ina4181a4qpwrq1.kicad_sym",
"ina4181a4qpwrq1.kicad_mod",
"ina4181a4qpwrq1.glb",
"ina4181a4qpwrq1.step",
"ina4181a4qpwrq1.lbr",
"docs/hero.png",
"docs/ina4181a4qpwrq1-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"ina4181a4qpwrq1-hero.glb",
"ina4181a4qpwrq1-hero.overlay.json"
],
"visibility": {
"public": true
}
}