# OPA2237EA

**Texas Instruments** · Precision OpAmps · VSSOP-8

OPA2237EA from Texas Instruments, in a VSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT A | output | Channel A output; voltage swing from (V-)+0.001V to (V+)-0.75V. |
| 2 | -IN A | input | Channel A inverting input; common-mode input voltage (V-)-0.2V to (V+)-1.5V. |
| 3 | +IN A | input | Channel A non-inverting input; common-mode input voltage (V-)-0.2V to (V+)-1.5V. |
| 4 | V- | power_in | Negative power supply; ground reference; (V-) with respect to this pin defines the lower voltage rail. |
| 5 | +IN B | input | Channel B non-inverting input; common-mode input voltage (V-)-0.2V to (V+)-1.5V. |
| 6 | -IN B | input | Channel B inverting input; common-mode input voltage (V-)-0.2V to (V+)-1.5V. |
| 7 | OUT B | output | Channel B output; voltage swing from (V-)+0.001V to (V+)-0.75V. |
| 8 | V+ | power_out | Positive power supply; accepts 2.7V to 36V single supply or ±1.35V to ±18V dual supply. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `OPA2237EA`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `opa2237ea-etched.step` / `opa2237ea-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa2237ea.step` / `opa2237ea.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/opa2237) (31 pp, sha256 `fd3debefc646126b`, retrieved 2026-09-18, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/opa2237ea-datasheet.pdf)