# OPA4353UA

**Texas Instruments** · Operational Amplifier · SOIC-14

OPA4353UA from Texas Instruments, in a SOIC-14. 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 A | output | Output of amplifier A, rail-to-rail output swinging within 10mV of the supply rails with a 10kΩ load. |
| 2 | -In A | input | Inverting input of amplifier A; diode-clamped to supply rails, current-limit to 10mA if signals swing more than 0.3V beyond the rails. |
| 3 | +In A | input | Non-inverting input of amplifier A; rail-to-rail input with common-mode range extending 0.1V beyond the supplies, diode-clamped, limit to 10mA beyond 0.3V. |
| 4 | V+ | power_in | Positive supply, operating range 2.7V to 5.5V (absolute maximum supply 5.5V), minimum operating voltage 2.5V. |
| 5 | +In B | input | Non-inverting input of amplifier B; rail-to-rail input, diode-clamped to the supply rails. |
| 6 | -In B | input | Inverting input of amplifier B; diode-clamped to the supply rails, limit to 10mA if beyond 0.3V outside rails. |
| 7 | Out B | output | Output of amplifier B, rail-to-rail output with ±40mA output current and ±80mA short-circuit current. |
| 8 | Out C | output | Output of amplifier C, rail-to-rail output with ±40mA output current and ±80mA short-circuit current. |
| 9 | -In C | input | Inverting input of amplifier C; diode-clamped to the supply rails, limit to 10mA if beyond 0.3V outside rails. |
| 10 | +In C | input | Non-inverting input of amplifier C; rail-to-rail input, diode-clamped to the supply rails. |
| 11 | V- | power_in | Negative supply or ground in single-supply operation; input and output signals are referenced to this rail. |
| 12 | +In D | input | Non-inverting input of amplifier D; rail-to-rail input, diode-clamped to the supply rails. |
| 13 | -In D | input | Inverting input of amplifier D; diode-clamped to the supply rails, limit to 10mA if beyond 0.3V outside rails. |
| 14 | Out D | output | Output of amplifier D, rail-to-rail output with ±40mA output current and ±80mA short-circuit current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `OPA4353UA`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `opa4353ua-etched.step` / `opa4353ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa4353ua.step` / `opa4353ua.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/opa4353) (33 pp, sha256 `feda07cfe615611c`, retrieved 2026-10-07, tier: lcsc)
- **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/opa4353ua-datasheet.pdf)