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INA2126U
Public Made by Adomby adom
Texas Instruments Instrumentation Amplifiers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+53@@ -0,0 +1,53 @@+# INA2126U++**Texas Instruments** · Instrumentation Amplifiers · SOIC-16++INA2126U from Texas Instruments, in a SOIC-16. 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 | V-INA | power_in | Inverting input of amplifier A; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies. |+| 2 | V+INA | power_in | Non-inverting input of amplifier A; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies. |+| 3 | RGA | passive | Gain-set pin for amplifier A; for gains greater than 5, a gain resistor RG is placed between pins 3 and 4 (G = 5 + 80 kΩ / RG). |+| 4 | RGA | passive | Gain-set pin for amplifier A; for gains greater than 5, a gain resistor RG is placed between pins 3 and 4 (G = 5 + 80 kΩ / RG). |+| 5 | RefA | input | Reference input for amplifier A; this pin must be driven from a low-impedance source or tied to ground. |+| 6 | VOA | output | Output of amplifier A; connect to SenseA (pin 7) for proper operation. |+| 7 | SenseA | input | Feedback sense input for amplifier A; must be connected to output VOA (pin 6) for proper operation. |+| 8 | V- | power_in | Negative power supply; dual supply range is ±1.35 V to ±18 V, or single supply 2.7 V to 36 V (V- to V+). |+| 9 | V+ | power_in | Positive power supply; dual supply range is ±1.35 V to ±18 V, or single supply 2.7 V to 36 V (V- to V+). |+| 10 | SenseB | input | Feedback sense input for amplifier B; must be connected to output VOB (pin 11) for proper operation. |+| 11 | VOB | output | Output of amplifier B; connect to SenseB (pin 10) for proper operation. |+| 12 | RefB | input | Reference input for amplifier B; this pin must be driven from a low-impedance source or tied to ground. |+| 13 | RGB | passive | Gain-set pin for amplifier B; for gains greater than 5, a gain resistor RG is placed between pins 13 and 14 (G = 5 + 80 kΩ / RG). |+| 14 | RGB | passive | Gain-set pin for amplifier B; for gains greater than 5, a gain resistor RG is placed between pins 13 and 14 (G = 5 + 80 kΩ / RG). |+| 15 | V+INB | power_in | Non-inverting input of amplifier B; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies. |+| 16 | V-INB | power_in | Inverting input of amplifier B; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16 |+| Category | Amplifiers/Comparators |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `INA2126U`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)+- 3D model files: `ina2126u-etched.step` / `ina2126u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina2126u.step` / `ina2126u.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/ina126) (38 pp, sha256 `67a5c87b926613db`, retrieved 2026-10-07, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/ina2126u-datasheet.pdf)
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input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies."+ },+ {+ "number": "2",+ "name": "V+INA",+ "type": "power_in",+ "description": "Non-inverting input of amplifier A; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies."+ },+ {+ "number": "3",+ "name": "RGA",+ "type": "passive",+ "description": "Gain-set pin for amplifier A; for gains greater than 5, a gain resistor RG is placed between pins 3 and 4 (G = 5 + 80 kΩ / RG)."+ },+ {+ "number": "4",+ "name": "RGA",+ "type": "passive",+ "description": "Gain-set pin for amplifier A; for gains greater than 5, a gain resistor RG is placed between pins 3 and 4 (G = 5 + 80 kΩ / RG)."+ },+ {+ "number": "5",+ "name": "RefA",+ "type": "input",+ "description": "Reference input for amplifier A; this pin must be driven from a low-impedance source or tied to ground."+ },+ {+ "number": "6",+ "name": "VOA",+ "type": "output",+ "description": "Output of amplifier A; connect to SenseA (pin 7) for proper operation."+ },+ {+ "number": "7",+ "name": "SenseA",+ "type": "input",+ "description": "Feedback sense input for amplifier A; must be connected to output VOA (pin 6) for proper operation."+ },+ {+ "number": "8",+ "name": "V-",+ "type": "power_in",+ "description": "Negative power supply; dual supply range is ±1.35 V to ±18 V, or single supply 2.7 V to 36 V (V- to V+)."+ },+ {+ "number": "9",+ "name": "V+",+ "type": "power_in",+ "description": "Positive power supply; dual supply range is ±1.35 V to ±18 V, or single supply 2.7 V to 36 V (V- to V+)."+ },+ {+ "number": "10",+ "name": "SenseB",+ "type": "input",+ "description": "Feedback sense input for amplifier B; must be connected to output VOB (pin 11) for proper operation."+ },+ {+ "number": "11",+ "name": "VOB",+ "type": "output",+ "description": "Output of amplifier B; connect to SenseB (pin 10) for proper operation."+ },+ {+ "number": "12",+ "name": "RefB",+ "type": "input",+ "description": "Reference input for amplifier B; this pin must be driven from a low-impedance source or tied to ground."+ },+ {+ "number": "13",+ "name": "RGB",+ "type": "passive",+ "description": "Gain-set pin for amplifier B; for gains greater than 5, a gain resistor RG is placed between pins 13 and 14 (G = 5 + 80 kΩ / RG)."+ },+ {+ "number": "14",+ "name": "RGB",+ "type": "passive",+ "description": "Gain-set pin for amplifier B; for gains greater than 5, a gain resistor RG is placed between pins 13 and 14 (G = 5 + 80 kΩ / RG)."+ },+ {+ "number": "15",+ "name": "V+INB",+ "type": "power_in",+ "description": "Non-inverting input of amplifier B; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies."+ },+ {+ "number": "16",+ "name": "V-INB",+ "type": "power_in",+ "description": "Inverting input of amplifier B; input voltage is clamped by internal diodes to the supply rails, and source current should be limited to 10 mA if the signal exceeds the supplies."+ }+ ],+ "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 16-pin SOIC (D) pinout is taken from Table 4-2 and Figure 4-2 (page 4). The INA2126U orderable p; Pin 8 and pin 9 are printed as V- and V+ in Table 4-2 and the description is taken from the single-s; The simplified schematic on page 1 and the application figures use different pin numbers for the INA"+ ],+ "pages_sent": 20,+ "cost_usd": 0.1028,+ "at": "2026-10-07T22:53:11"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ina126",+ "pages": 38,+ "sha256": "67a5c87b926613db",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ina2126u.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 9.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ina2126u-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 9.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "77f28509d076bdaee5ff9d58714c8eb723d90dee001852a702360523d42de514",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}