# INA190A4IRSWR

**Texas Instruments** · Current Sense Amplifiers · UQFN-10(1.4x1.8)

INA190A4IRSWR from Texas Instruments, in a UQFN-10(1.4x1.8). 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 | NC | unconnected | Not internally connected; float this pin or connect it to any voltage between GND and VS. |
| 2 | NC | unconnected | Not internally connected; float this pin or connect it to any voltage between GND and VS. |
| 3 | IN+ | input | Current-sense amplifier positive input; connect to the bus voltage side of the sense resistor for high-side use, or to the load side for low-side use. Input pin voltage range is GND - 0.2 V to 40 V. |
| 4 | IN- | input | Current-sense amplifier negative input; connect to the load side of the sense resistor for high-side use, or to the ground side for low-side use. Input pin voltage range is GND - 0.2 V to 40 V. |
| 5 | NC | unconnected | Not internally connected; float this pin or connect it to any voltage between GND and VS. |
| 6 | VS | power_in | Power supply pin, 1.7 V to 5.5 V operating supply voltage. |
| 7 | ENABLE | input | Enable pin: driven to VS the device is on and operates as a current-sense amplifier; driven to GND the device is off with reduced supply current and a high-impedance output; it must be driven externally or tied to VS if not used. |
| 8 | REF | input | Reference input that enables bidirectional current sensing with an externally applied voltage; REF voltage range is GND to VS. |
| 9 | GND | power_in | Analog ground pin for the device. |
| 10 | OUT | output | Analog voltage output equal to the gained-up difference from IN+ to IN-, offset by the voltage applied to REF; this variant (A4) has a gain of 200 V/V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | UQFN-10(1.4x1.8) |
| Category | Amplifiers/Comparators |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `INA190A4IRSWR`
- Footprint: `Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm`
- 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files: `ina190a4irswr-etched.step` / `ina190a4irswr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina190a4irswr.step` / `ina190a4irswr.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/ina190) (47 pp, sha256 `38a7102701707c17`, retrieved 2026-10-11, 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/ina190a4irswr-datasheet.pdf)