# OPA347NA

**Texas Instruments** · Operational Amplifier · SOT-23-5

OPA347NA from Texas Instruments, in a SOT-23-5. 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 | Out | output | Output of the amplifier, which swings within 5mV of the rails for light loads (>100kΩ) and can directly drive up to 250pF in unity gain. |
| 2 | V- | power_in | Negative power supply (ground in single-supply operation), with inputs allowed to range 200mV beyond this rail and an absolute maximum input of 500mV beyond the supplies. |
| 3 | +In | input | Non-inverting input; normal operation is limited to a common-mode range of (V-) - 0.2V to (V+) + 0.2V. |
| 4 | -In | input | Inverting input; input current should be limited to 10mA when signals exceed the supply rails by more than 0.5V. |
| 5 | V+ | power_in | Positive power supply; the device is specified from 2.5V to 5.5V with a minimum operating voltage of 2.3V, and should be bypassed with 0.01µF ceramic capacitors. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `OPA347NA`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `opa347na-etched.step` / `opa347na-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa347na.step` / `opa347na.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/lit/ds/symlink/opa347.pdf) (40 pp, sha256 `3e158a3adb389c1a`, retrieved 2026-10-07, tier: manufacturer)
- **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/opa347na-datasheet.pdf)