# INA154UA

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

INA154UA 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 terminal to which the output is referred (normally grounded); a voltage applied here is summed with the output, and its source impedance should be less than 10Ω to maintain good common-mode rejection. |
| 2 | -In | input | Inverting differential input; source impedances on pins 2 and 3 must be nearly equal for good common-mode rejection, and pins 2 and 5 must not be interchanged. |
| 3 | +In | input | Non-inverting differential input; source impedances on pins 2 and 3 must be nearly equal for good common-mode rejection, and pins 1 and 3 must not be interchanged. |
| 4 | V- | power_in | Negative power supply; the device operates from ±4V to ±18V supplies, with V+ to V- absolute maximum of 40V. |
| 5 | Sense | input | Internal resistor-network connection of the difference amplifier; the datasheet gives no further electrical limits for this pin beyond that it must not be interchanged with pin 2. |
| 6 | Output | output | Amplifier output, rated for ±60mA continuous current limit to common and stable with up to 500pF capacitive load. |
| 7 | V+ | power_in | Positive power supply; the device operates from ±4V to ±18V supplies, with V+ to V- absolute maximum of 40V. |
| 8 | NIC | unconnected | No internal connection (NC) on the package; leave unconnected. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA154UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina154ua-etched.step` / `ina154ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina154ua.step` / `ina154ua.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/ina154) (15 pp, sha256 `248c073bc29d6b35`, retrieved 2026-10-11, 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/ina154ua-datasheet.pdf)