# INA190A4IDDFR

**Texas Instruments** · Current Sense Amplifiers · TSOT-23-8

INA190A4IDDFR from Texas Instruments, in a TSOT-23-8. 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 | VS | power_in | Analog power supply, 1.7 V to 5.5 V |
| 2 | ENABLE | input | Digital input enable pin; device operates when driven to VS and is disabled with reduced supply current when driven to GND. |
| 3 | REF | input | Reference input for bidirectional current sensing with externally applied voltage. |
| 4 | GND | power_in | Analog ground |
| 5 | OUT | output | Analog output voltage proportional to IN+ to IN- difference, offset by REF voltage. |
| 6 | NC | unconnected | Not internally connected; float or connect between GND and VS. |
| 7 | IN+ | input | Current-sense amplifier positive input to measure voltage across sense resistor. |
| 8 | IN- | input | Current-sense amplifier negative input to measure voltage across sense resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `INA190A4IDDFR`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-8`
- 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files: `ina190a4iddfr-etched.step` / `ina190a4iddfr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina190a4iddfr.step` / `ina190a4iddfr.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 2026-10-05, 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/ina190a4iddfr-datasheet.pdf)