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INA143U
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Texas Instruments Differential Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# INA143U++**Texas Instruments** · Differential Amplifiers · SOIC-8++INA143U from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | Ref | input | Output reference terminal, normally grounded; a voltage applied here is summed with the output to null offset, and its source impedance should be less than 10Ω to maintain good common-mode rejection. |+| 2 | -In | input | Inverting differential input; source impedances on the two inputs must be nearly equal, since a 5Ω mismatch degrades typical CMR to about 86 dB, and input resistors above 100Ω degrade CMR even if matched. |+| 3 | +In | input | Non-inverting differential input; source impedances must be nearly equal to the -In source for good common-mode rejection, and the common-mode input range extends beyond the supply rails. |+| 4 | V- | power_in | Negative supply: operates from dual supplies of ±2.25V to ±18V or single supply of +4.5V to +36V (absolute maximum supply V+ to V- is 36V). |+| 5 | Sense | input | Sense terminal of the internal difference amplifier (shown in the block diagram); the text does not define its function or limits. |+| 6 | Output | output | Amplifier output; with RL = 10kΩ to ground it swings to (V+) -1.5V positive and (V-) +1V negative, with continuous short-circuit current limit of -25/+32 mA and stable operation up to 1000 pF capacitive load. |+| 7 | V+ | power_in | Positive supply: operates from ±2.25V to ±18V dual or +4.5V to +36V single supply. |+| 8 | NC | unconnected | No connection; leave unconnected. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Amplifiers/Comparators |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `INA143U`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `ina143u-etched.step` / `ina143u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina143u.step` / `ina143u.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ina143) (22 pp, sha256 `8976aa5a4a2130c8`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ina143u-datasheet.pdf)
page.jsonadded+201@@ -0,0 +1,201 @@+{+ "slug": "ina143u",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Differential Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "ina143u",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ina143u.kicad_sym",+ "ina143u.kicad_mod",+ "ina143u.glb",+ "ina143u.step",+ "ina143u.lbr",+ "docs/hero.png",+ "docs/ina143u-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "ina143u-hero.glb",+ "ina143u-hero.overlay.json"+ ],+ "component": {+ "mpn": "INA143U",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Amplifiers/Comparators",+ "subcategory": "Differential Amplifiers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/ina143",+ "parts": {+ "symbol": "ina143u.kicad_sym",+ "footprint": "ina143u.kicad_mod",+ "model_3d": "ina143u-hero.glb",+ "model_3d_plain": "ina143u.glb",+ "model_3d_step": "ina143u-etched.step",+ "model_3d_step_plain": "ina143u.step",+ "lbr": "ina143u.lbr"+ },+ "distributor_links": {+ "lcsc": "C962974",+ "digikey": "INA143U-ND",+ "mouser": "595-INA143U"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T19:55:58Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "INA143U-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "595-INA143U",+ "status": "found",+ "lifecycle": "End of Life"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "Ref",+ "type": "input",+ "description": "Output reference terminal, normally grounded; a voltage applied here is summed with the output to null offset, and its source impedance should be less than 10Ω to maintain good common-mode rejection."+ },+ {+ "number": "2",+ "name": "-In",+ "type": "input",+ "description": "Inverting differential input; source impedances on the two inputs must be nearly equal, since a 5Ω mismatch degrades typical CMR to about 86 dB, and input resistors above 100Ω degrade CMR even if matched."+ },+ {+ "number": "3",+ "name": "+In",+ "type": "input",+ "description": "Non-inverting differential input; source impedances must be nearly equal to the -In source for good common-mode rejection, and the common-mode input range extends beyond the supply rails."+ },+ {+ "number": "4",+ "name": "V-",+ "type": "power_in",+ "description": "Negative supply: operates from dual supplies of ±2.25V to ±18V or single supply of +4.5V to +36V (absolute maximum supply V+ to V- is 36V)."+ },+ {+ "number": "5",+ "name": "Sense",+ "type": "input",+ "description": "Sense terminal of the internal difference amplifier (shown in the block diagram); the text does not define its function or limits."+ },+ {+ "number": "6",+ "name": "Output",+ "type": "output",+ "description": "Amplifier output; with RL = 10kΩ to ground it swings to (V+) -1.5V positive and (V-) +1V negative, with continuous short-circuit current limit of -25/+32 mA and stable operation up to 1000 pF capacitive load."+ },+ {+ "number": "7",+ "name": "V+",+ "type": "power_in",+ "description": "Positive supply: operates from ±2.25V to ±18V dual or +4.5V to +36V single supply."+ },+ {+ "number": "8",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection; leave unconnected."+ }+ ],+ "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: Pin 5 'Sense' is named in the block diagram and pin configuration only; the datasheet text does not ; The SO-8 pin configuration text is column-scrambled in extraction. Pin numbers were mapped by pairin; Pin types for Ref and Sense (input) are inferred from their roles in the block diagram and applicati"+ ],+ "pages_sent": 22,+ "cost_usd": 0.0918,+ "at": "2026-10-08T19:55:31"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ina143",+ "pages": 22,+ "sha256": "8976aa5a4a2130c8",+ "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": "ina143u.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 4.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ina143u-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 4.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "c57803c7980b54d3fd83dafca49b69b14dfa8953c16f3cebb84f1819c50717f0",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}