# OPA843ID

**Texas Instruments** · Operational Amplifier · SOIC-8

OPA843ID 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 | NC | unconnected | No connection; the datasheet marks this pin as NC (no connection). |
| 2 | Inverting Input | input | Inverting input of the op amp; the differential input voltage is limited to ±1.2V absolute maximum. |
| 3 | Noninverting Input | input | Noninverting input of the op amp; common-mode input range is ±3.2V min at 25°C with VS = ±5V. |
| 4 | -VS | power_in | Negative power supply; specified at −5V with a minimum operating voltage of ±4V and maximum operating voltage of ±6V (absolute maximum supply ±6.5V). |
| 5 | NC | unconnected | No connection; the datasheet marks this pin as NC (no connection). |
| 6 | Output | output | Output of the amplifier; output current is ±100mA min at VO = 0V (25°C). |
| 7 | +VS | power_in | Positive power supply; specified at +5V with a minimum operating voltage of ±4V and maximum operating voltage of ±6V (absolute maximum supply ±6.5V). |
| 8 | NC | unconnected | No connection; the datasheet marks this pin as NC (no connection). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `OPA843ID`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa843id-etched.step` / `opa843id-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa843id.step` / `opa843id.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/opa843.pdf) (32 pp, sha256 `8a75f28dd19e8799`, retrieved 2026-10-08, 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/opa843id-datasheet.pdf)