component
COS128U
Public Made by Adomby adom
COSINE Instrumentation Amplifiers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "cos128u",
"title": "COS128U",
"brief": "COSINE Instrumentation Amplifiers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"component": {
"mpn": "COS128U",
"manufacturer": "COSINE",
"package": "SOP-8",
"pin_count": 8,
"category": "Amplifiers/Comparators",
"subcategory": "Instrumentation Amplifiers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904278586642432",
"parts": {
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"lbr": "cos128u.lbr"
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"distributor_links": {
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},
"distributor_check": {
"checked_at": "2026-10-18T11:21:38Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "RG",
"type": "passive",
"description": "Gain-setting pin; for gains greater than 1, a single gain resistor is connected between pin 1 and pin 8 (G = 1 + 50 kΩ/RG for COS128U, 1 + 49.4 kΩ/RG for COS129)."
},
{
"number": "2",
"name": "VIN-",
"type": "power_in",
"description": "Negative (inverting) differential input; the input common-mode voltage range is -Vs+1.9 V to +Vs-1.2 V."
},
{
"number": "3",
"name": "VIN+",
"type": "power_in",
"description": "Positive (non-inverting) differential input; the input common-mode voltage range is -Vs+1.9 V to +Vs-1.2 V."
},
{
"number": "4",
"name": "-VS",
"type": "power_in",
"description": "Negative supply rail; operates from dual supplies of ±2.25 V to ±18 V (or single supply from +4.5 V to +36V with +VS)."
},
{
"number": "5",
"name": "REF",
"type": "input",
"description": "Reference input that must be driven by a low-impedance source or connected to ground; a series resistance of 8 Ω degrades typical CMR to about 80 dB."
},
{
"number": "6",
"name": "VOUT",
"type": "output",
"description": "Output; output swing is +VS-1.1 V (high) to -VS+1.1 V (low) and output current is ±10 mA with VDROPOUT < 1.2 V."
},
{
"number": "7",
"name": "+VS",
"type": "power_in",
"description": "Positive supply rail; operates from dual supplies of ±2.25 V to ±18 V (or single supply from +4.5 V to +36V)."
},
{
"number": "8",
"name": "RG",
"type": "passive",
"description": "Gain-setting pin; the gain resistor RG is connected between pin 8 and pin 1 (internally the pin 1 and pin 8 pair are the two RG terminals)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"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: Pins 1 and 8 are both named RG in the datasheet pin table; they are the two terminals of the gain re; The datasheet has a single pin-function table (page 2) for the 8-pin packages and does not give a se; Pin 4 and 7 supply ranges are quoted from the recommended operating conditions and application notes"
],
"pages_sent": 8,
"cost_usd": 0.0314,
"at": "2026-10-18T11:18:29"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904278586642432",
"pages": 8,
"sha256": "e35a1a4eec057f26",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 8,
"described": 8,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"footprint_binding": "identity",
"sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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{
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]
},
"metadata": {
"specs": {
"Manufacturer": "COSINE",
"Package": "SOP-8",
"Category": "Amplifiers/Comparators",
"Pins": "8"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "e35a1a4eec057f26dd4b93959f27911bc76ae152972c6955912a200c60ad36bf",
"rows": [
{
"name": "Input Offset Voltage (COS128U/129U)",
"symbol": "VOS",
"kind": "tolerance",
"unit": "μV",
"min": -50,
"typ": 10,
"max": 50,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Offset Voltage Drift",
"symbol": "ΔVOS/ΔT",
"kind": "temperature_coefficient",
"unit": "μV/°C",
"min": null,
"typ": 0.2,
"max": 1,
"conditions": "-40 to 125°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Bias Current",
"symbol": "IB",
"kind": "electrical",
"unit": "nA",
"min": -10,
"typ": 2,
"max": 10,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input Offset Current",
"symbol": "IOS",
"kind": "electrical",
"unit": "nA",
"min": -10,
"typ": 1,
"max": 10,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Common-Mode Rejection Ratio",
"symbol": "CMRR",
"kind": "electrical",
"unit": "dB",
"min": 125,
"typ": null,
"max": null,
"conditions": "G=100",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain Range",
"symbol": "GR",
"kind": "recommended_operating",
"unit": "V/V",
"min": 1,
"typ": null,
"max": 10000,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Gain Error",
"symbol": "GE",
"kind": "tolerance",
"unit": "%",
"min": -2,
"typ": null,
"max": 2,
"conditions": "",
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{
"name": "Output Current",
"symbol": "IOUT",
"kind": "electrical",
"unit": "mA",
"min": -10,
"typ": null,
"max": 10,
"conditions": "VDROPOUT < 1.2 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Short-Circuit Current",
"symbol": "ISC",
"kind": "electrical",
"unit": "mA",
"min": -24,
"typ": null,
"max": 24,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating Voltage Range",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 2.25,
"typ": null,
"max": 18,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Power Supply Rejection Ratio",
"symbol": "PSRR",
"kind": "electrical",
"unit": "dB",
"min": 120,
"typ": null,
"max": null,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Quiescent Current / Amplifier",
"symbol": "IQ",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 1,
"max": 1.5,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Power Supply Voltage (absolute maximum, +Vs to -Vs)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 36,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Differential Input Voltage Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -36,
"typ": null,
"max": 36,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Output Current (absolute maximum)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage Temperature Range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Junction Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Temperature Range (absolute maximum)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "ESD Susceptibility, HBM",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 2000,
"conditions": "HBM",
"source_page": 2,
"source": "datasheet"
},
{
"name": "DC Supply Voltage (recommended)",
"symbol": "",
"kind": "recommended_operating",
"unit": "V",
"min": 2.5,
"typ": null,
"max": 18,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Operating Ambient Temperature (recommended)",
"symbol": "",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Gain Bandwidth Product",
"symbol": "GBWP",
"kind": "electrical",
"unit": "MHz",
"min": null,
"typ": 1.5,
"max": null,
"conditions": "CL=100pF, RL=10kΩ",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Slew Rate",
"symbol": "SR",
"kind": "electrical",
"unit": "V/μs",
"min": null,
"typ": 1,
"max": null,
"conditions": "CL=100pF, RL=10kΩ, Av=1",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Voltage Noise Density",
"symbol": "en",
"kind": "electrical",
"unit": "nV/√Hz",
"min": null,
"typ": 8,
"max": null,
"conditions": "f=1kHz",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Package Thermal Resistance, junction-to-ambient (SOP8)",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 155,
"max": null,
"conditions": "SOP8",
"source_page": 3,
"source": "datasheet"
}
]
}
},
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"author": {
"name": "Ray",
"email": "[email protected]"
},
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}
}