# INA106U

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

INA106U 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 | Reference input, connected through a 100kΩ resistor to the op amp non-inverting terminal; the source impedance driving it should be kept below 10Ω to maintain good common-mode rejection. |
| 2 | -IN | input | Negative (inverting) input, connected through a 10kΩ resistor to the op amp inverting terminal. |
| 3 | +IN | input | Positive (non-inverting) input, connected through a 10kΩ resistor to the op amp non-inverting terminal. |
| 4 | V- | power_in | Negative (lowest) power supply pin; the supply range is ±5V to ±18V (single supply 10V to 36V recommended operating range, absolute maximum total supply 36V). |
| 5 | SENSE | input | Sense input, connected through a 100kΩ resistor to the op amp inverting terminal. |
| 6 | OUT | output | Output terminal; output short-circuit to VS/2 is continuous per the absolute maximum ratings. |
| 7 | V+ | power_in | Positive (highest) power supply pin. |
| 8 | NC | unconnected | No internal connection; the pin may be left floating. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA106U`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina106u-etched.step` / `ina106u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina106u.step` / `ina106u.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/ina106) (29 pp, sha256 `58d22ca47333ed82`, retrieved 2026-10-10, 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/ina106u-datasheet.pdf)