# INA141UA

**Texas Instruments** · Instrumentation Amplifiers · SOIC-8

INA141UA 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 | J | input | Gain select pin (shorted to pin 8): G = 10V/V if not shorted, G = 100V/V if shorted; a 0.5Ω series resistance reduces gain by 0.1%. |
| 2 | V-IN | power_in | Negative (inverting) input, protected to ±40V. |
| 3 | V+IN | power_in | Positive (noninverting) input, protected to ±40V. |
| 4 | V- | power_in | Negative supply. |
| 5 | Ref | input | Reference input; this pin must be driven from a low impedance to maintain good CMR. |
| 6 | VO | output | Amplifier output. |
| 7 | V+ | power_in | Positive supply. |
| 8 | J | input | Gain select pin (shorted to pin 1): G = 10V/V if not shorted, G = 100V/V if shorted; a 0.5Ω series resistance reduces gain by 0.1%. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `INA141UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina141ua-etched.step` / `ina141ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina141ua.step` / `ina141ua.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/ina141) (29 pp, sha256 `7d9a0b29cc8d248b`, retrieved 2026-10-01, 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-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/ina141ua-datasheet.pdf)