# INA199A2RSWT

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

INA199A2RSWT 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 | No internal connection; the pin may be left floating or connected to any voltage between GND and V+. |
| 2 | IN+ | input | Analog input connected to the supply side of the shunt resistor; both IN+ pins (2 and 3) must be connected together, and the absolute maximum input current is 5 mA per pin. |
| 3 | IN+ | input | Analog input connected to the supply side of the shunt resistor; must be connected together with pin 2, and the absolute maximum input current is 5 mA per pin. |
| 4 | IN- | input | Analog input connected to the load side of the shunt resistor; both IN- pins (4 and 5) must be connected together, with common-mode range -0.3 V to 26 V for the INA199Ax version. |
| 5 | IN- | input | Analog input connected to the load side of the shunt resistor; must be connected together with pin 4, with common-mode range -0.3 V to 26 V for the INA199Ax version. |
| 6 | V+ | power_in | Analog supply pin, specified for 2.7 V to 26 V with an absolute maximum supply of 26 V. |
| 7 | NC | unconnected | No internal connection; the pin may be left floating or connected to any voltage between GND and V+. |
| 8 | REF | input | Reference voltage input that must be set between 0 V and V+, and must be buffered by an op amp if driven from a resistor divider. |
| 9 | GND | power_in | Analog ground reference for the device. |
| 10 | OUT | output | Analog voltage output whose swing is limited by the V+ supply and GND, with absolute limits of GND - 0.3 V to (V+) + 0.3 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA199A2RSWT`
- Footprint: `Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm`
- 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files: `ina199a2rswt-etched.step` / `ina199a2rswt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina199a2rswt.step` / `ina199a2rswt.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/ina199) (43 pp, sha256 `f48fb5be37c0cf43`, retrieved 2026-10-07, 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/ina199a2rswt-datasheet.pdf)