# INA138QPWRQ1

**Texas Instruments** · Current Sense Amplifiers · TSSOP-8

INA138QPWRQ1 from Texas Instruments, in a TSSOP-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 | VIN- | power_in | Negative analog input of the differential sense voltage; for INA138-Q1 the common-mode range is 2.7 V to 36 V recommended and absolute maximum is -0.3 V to 60 V. |
| 2 | VIN+ | power_in | Positive analog input of the differential sense voltage; for INA138-Q1 the common-mode range is 2.7 V to 36 V recommended and absolute maximum is -0.3 V to 60 V, independent of the supply voltage. |
| 3 | NC | unconnected | No internal connection; leave unconnected. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | NC | unconnected | No internal connection; leave unconnected. |
| 6 | OUT | output | Output current pin that sources a current proportional to the differential input, converted to voltage by an external load resistor; IOUT must be kept below 400 µA per the datasheet equation, and analog output absolute maximum is -0.3 V to 40 V. |
| 7 | NC | unconnected | No internal connection; leave unconnected. |
| 8 | V+ | power_in | Power-supply pin; for INA138-Q1 the recommended supply range is 2.7 V to 36 V (5 V nominal) and absolute maximum is -0.3 V to 60 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA138QPWRQ1`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ina138qpwrq1-etched.step` / `ina138qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina138qpwrq1.step` / `ina138qpwrq1.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/ina138-q1) (31 pp, sha256 `25a13028397bf402`, 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/ina138qpwrq1-datasheet.pdf)