# INA148UA

**Texas Instruments** · Differential Amplifiers · SOIC-8

INA148UA from Texas Instruments, in a SOIC-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 | REF | input | Reference voltage input where VOUT = (+IN) - (-IN) + VREF; requires source impedance ≤ 5Ω to maintain 86dB CMRR. |
| 2 | -IN | input | Inverting differential input rated for ±200V continuous and ±500V peak (0.1s); common-mode input range ±200V (dual supply ±15V), ±100V (dual supply ±5V), or -47.5V to +75V (single supply +5V). |
| 3 | +IN | input | Non-inverting differential input rated for ±200V continuous and ±500V peak (0.1s); common-mode input range ±200V (dual supply ±15V), ±100V (dual supply ±5V), or -4V to +32.5V (single supply +5V). |
| 4 | V- | power_in | Negative power supply rail; rated ±1.35V to ±18V (dual supply) or GND (single supply mode); absolute maximum ±18V dual or 36V single supply. |
| 5 | NC | unconnected | No connection pad; leave unconnected. |
| 6 | OUT | output | Differential amplifier output; voltage swing (V-) + 0.5V to (V+) - 1.5V with RL = 10kΩ load; short-circuit current ±13mA (SHE process) or ±20mA (TID process) continuous. |
| 7 | V+ | power_in | Positive power supply rail; rated ±1.35V to ±18V (dual supply) or 2.7V to 36V (single supply); use low-ESR bypass capacitor connected close to pin. |
| 8 | NC | unconnected | No connection pad; leave unconnected. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA148UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina148ua-etched.step` / `ina148ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina148ua.step` / `ina148ua.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/ina148) (25 pp, sha256 `672c32261ac8f8b9`, retrieved 2026-10-01, 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/ina148ua-datasheet.pdf)