# INA199B3RSWR

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

INA199B3RSWR 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; can be left floating or connected to any voltage between GND and V+. |
| 2 | IN+ | input | Analog input connected to the power side of the shunt resistor; accepts common mode voltage from -0.1V to 26V. |
| 3 | IN+ | input | Analog input connected to the power side of the shunt resistor; accepts common mode voltage from -0.1V to 26V. |
| 4 | IN- | input | Analog input connected to the load side of the shunt resistor; accepts common mode voltage from -0.1V to 26V. |
| 5 | IN- | input | Analog input connected to the load side of the shunt resistor; accepts common mode voltage from -0.1V to 26V. |
| 6 | V+ | power_in | Analog power supply; supply voltage range 2.7V to 26V. |
| 7 | NC | unconnected | No internal connection; can be left floating or connected to any voltage between GND and V+. |
| 8 | REF | input | Analog input reference voltage; biases output zero level; accepts voltage range 0V to V+. |
| 9 | GND | power_in | Analog ground; provides 0V reference. |
| 10 | OUT | output | Analog output voltage; output voltage swing from GND+0.005V to GND+0.05V at low end and V+-0.05V to V+-0.2V at high end with RL=10kΩ to GND. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA199B3RSWR`
- Footprint: `Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm`
- 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files: `ina199b3rswr-etched.step` / `ina199b3rswr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina199b3rswr.step` / `ina199b3rswr.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 2026-10-03, 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/ina199b3rswr-datasheet.pdf)