# SL4558S

**Slkor SLKORMICRO Elec** · Operational Amplifier · SOP-8

SL4558S from Slkor SLKORMICRO Elec, in a SOP-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 | OUT1 | output | Output of amplifier 1. Typical output swing ±12 V to ±14 V with RL > 10 kΩ on ±15 V supplies; slew rate 1.2 V/µs. |
| 2 | IN1(-) | input | Inverting input of amplifier 1. Input bias current typ. 30 nA, offset current typ. 5 nA; common-mode input range ±12 V min. |
| 3 | IN1(+) | input | Non-inverting input of amplifier 1. Input bias current typ. 30 nA; common-mode input range ±12 V min, ±13 V typ. |
| 4 | Vee | power_in | Negative supply rail. Absolute maximum ±16 V total supply; typical operation at -15 V. Supply current typ. 3.5 mA (both amps). |
| 5 | IN2(+) | input | Non-inverting input of amplifier 2. Input bias current typ. 30 nA; common-mode input range ±12 V min. |
| 6 | IN2(-) | input | Inverting input of amplifier 2. Input bias current typ. 30 nA, offset current typ. 5 nA. |
| 7 | OUT2 | output | Output of amplifier 2. Typical output swing ±12 V to ±14 V with RL > 10 kΩ; large-signal gain 20-200 V/mV. |
| 8 | Vcc | power_in | Positive supply rail. Absolute maximum ±16 V; typical operation at +15 V. PSRR typ. 90 dB. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `SL4558SS`
- `SL4558SD`

## CAD (KiCad official)

- Symbol: `SL4558S`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `sl4558s-etched.step` / `sl4558s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sl4558s.step` / `sl4558s.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](docs/sl4558s-datasheet.pdf) (4 pp, sha256 `4d79373e8be71479`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/sl4558s-datasheet.pdf)