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INA2331AIPWR
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Texas Instruments Instrumentation Amplifiers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+50@@ -0,0 +1,50 @@+# INA2331AIPWR++**Texas Instruments** · Instrumentation Amplifiers · TSSOP-14++INA2331AIPWR from Texas Instruments, in a TSSOP-14. 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 | RGA | passive | Channel A gain-setting terminal; external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5. |+| 2 | VIN-A | power_in | Channel A inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |+| 3 | VIN+A | power_in | Channel A non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |+| 4 | V- | power_in | Negative supply (or ground in single-supply operation), supply range V+ to V- of +2.7V to +5.5V specified and 7.5V absolute maximum. |+| 5 | VIN+B | power_in | Channel B non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |+| 6 | VIN-B | power_in | Channel B inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA. |+| 7 | RGB | passive | Channel B gain-setting terminal; external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5. |+| 8 | Shutdown B | input | Channel B shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance. |+| 9 | VOUTB | output | Channel B rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ. |+| 10 | REFB | input | Channel B reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply. |+| 11 | V+ | power_in | Positive supply, +2.7V to +5.5V specified (+2.5V to +5.5V operating), 7.5V absolute maximum V+ to V-, decoupled with 0.1µF. |+| 12 | REFA | input | Channel A reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply. |+| 13 | VOUTA | output | Channel A rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ. |+| 14 | Shutdown A | input | Channel A shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-14 |+| Category | Amplifiers/Comparators |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `INA2331AIPWR`+- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`+- 3D model: TSSOP-14 (KiCad packages3D, STEP)+- 3D model files: `ina2331aipwr-etched.step` / `ina2331aipwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina2331aipwr.step` / `ina2331aipwr.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/ina2331) (24 pp, sha256 `b563b3023a3cb8c8`, retrieved 2026-10-05, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/ina2331aipwr-datasheet.pdf)
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external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5."+ },+ {+ "number": "2",+ "name": "VIN–A",+ "type": "power_in",+ "description": "Channel A inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA."+ },+ {+ "number": "3",+ "name": "VIN+A",+ "type": "power_in",+ "description": "Channel A non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA."+ },+ {+ "number": "4",+ "name": "V–",+ "type": "power_in",+ "description": "Negative supply (or ground in single-supply operation), supply range V+ to V- of +2.7V to +5.5V specified and 7.5V absolute maximum."+ },+ {+ "number": "5",+ "name": "VIN+B",+ "type": "power_in",+ "description": "Channel B non-inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA."+ },+ {+ "number": "6",+ "name": "VIN–B",+ "type": "power_in",+ "description": "Channel B inverting input, diode-clamped to the supply rails with signals limited to (V-) - 0.5V to (V+) + 0.5V and 10mA."+ },+ {+ "number": "7",+ "name": "RGB",+ "type": "passive",+ "description": "Channel B gain-setting terminal; external R1/R2 per G = 5 + 5(R2/R1) set gain above 5V/V, and shorting VOUT to RG gives G = 5."+ },+ {+ "number": "8",+ "name": "Shutdown B",+ "type": "input",+ "description": "Channel B shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance."+ },+ {+ "number": "9",+ "name": "VOUTB",+ "type": "output",+ "description": "Channel B rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ."+ },+ {+ "number": "10",+ "name": "REFB",+ "type": "input",+ "description": "Channel B reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply."+ },+ {+ "number": "11",+ "name": "V+",+ "type": "power_in",+ "description": "Positive supply, +2.7V to +5.5V specified (+2.5V to +5.5V operating), 7.5V absolute maximum V+ to V-, decoupled with 0.1µF."+ },+ {+ "number": "12",+ "name": "REFA",+ "type": "input",+ "description": "Channel A reference terminal defining zero output level; needs a low-impedance connection and must be at least 1.2V below the positive supply."+ },+ {+ "number": "13",+ "name": "VOUTA",+ "type": "output",+ "description": "Channel A rail-to-rail output, optimized for loads of 10kΩ or greater and swinging to within 25mV of the rail at 10kΩ."+ },+ {+ "number": "14",+ "name": "Shutdown A",+ "type": "input",+ "description": "Channel A shutdown control, nominally connected to V+; pulled below 0.8V on a 5V supply it enters sleep mode with high output impedance."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 24,+ "cost_usd": 0.179,+ "at": "2026-10-05T20:56:22"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ina2331",+ "pages": 24,+ "sha256": "b563b3023a3cb8c8",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}