# INA303A1QPWRQ1

**Texas Instruments** · Current Sense Amplifiers · TSSOP-14

INA303A1QPWRQ1 from Texas Instruments, in a TSSOP-14. 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 input, operating from 2.7 V to 5.5 V. |
| 2 | OUT | output | Analog output that provides the output voltage of the current-sense amplifier. |
| 3 | LIMIT1 | input | ALERT1 threshold limit input; the overlimit threshold is set externally as described in the Setting Alert Thresholds section. |
| 4 | REF | input | Analog reference voltage input, range 0 V to VS. |
| 5 | GND | power_in | Analog ground reference for the device. |
| 6 | LATCH1 | input | Digital input that selects transparent or latch mode operation. |
| 7 | LATCH2 | input | Digital input that selects transparent or latch mode operation. |
| 8 | NC | unconnected | No internal connection; leave unconnected. |
| 9 | LIMIT2 | input | ALERT2 threshold limit input; the threshold is set externally as described in the Setting Alert Thresholds section. |
| 10 | DELAY | input | Delay timing input that sets the delayed alert response for comparator 2, as described in the Alert Outputs section. |
| 11 | ALERT2 | output | Open-drain, active-low alert output that is an underlimit alert on the INA303-Q1 (the overlimit alert on the INA302-Q1). |
| 12 | ALERT1 | output | Open-drain, active-low overlimit alert output. |
| 13 | IN- | input | Current-sense input; connect to the load side of the current-sensing resistor. |
| 14 | IN+ | input | Current-sense input; connect to the supply side of the current-sensing resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `INA303A1QPWRQ1`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `ina303a1qpwrq1-etched.step` / `ina303a1qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina303a1qpwrq1.step` / `ina303a1qpwrq1.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/ina302-q1) (40 pp, sha256 `9d26f5e6ff86755e`, retrieved 2026-10-08, 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/ina303a1qpwrq1-datasheet.pdf)