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njm4558

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KEXIN Operational Amplifier, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmpnjm4558
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 1mo ago
viewers njm4558: symbol viewer with the datasheet pin names · Ray 1mo ago
njm4558.glb Publish 0.1.0 · Ray 1mo ago
njm4558.kicad_mod Publish 0.1.0 · Ray 1mo ago
njm4558.kicad_sym njm4558: datasheet pin names on the inverting inputs too (A_IN-, B_IN-) · Ray 1mo ago
njm4558.lbr njm4558: datasheet pin names on the inverting inputs too (A_IN-, B_IN-) · Ray 1mo ago
njm4558.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json njm4558: restore the component block (pinout + model declarations) from this page's own README and write the datasheet… · Ray 1mo ago
README.md Initial commit: component/njm4558 · Ray 1mo ago

NJM4558

KEXIN · Operational Amplifier · SOP-8

NJM4558 from KEXIN, 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 A_OUT output Amplifier A output. Class-AB output stage capable of swinging ±14 V typ. into a ≥10 kΩ load (±13 V typ. into ≥2 kΩ) at ±15 V supply.
2 A_IN- input Amplifier A inverting input. Input bias current 50 nA typ., input offset current 5 nA typ., input resistance 5 MΩ typ.
3 A_IN+ input Amplifier A non-inverting input. Common-mode input range ±12 V typ. at ±15 V supply; differential input voltage rated to ±30 V absolute maximum.
4 V- power_in Negative supply rail. Rated -18 V absolute maximum relative to V+; shared by both amplifier channels. Typical operating current 3.5 mA at ±15 V.
5 B_IN+ input Amplifier B non-inverting input. Common-mode input range ±12 V typ. at ±15 V supply.
6 B_IN- input Amplifier B inverting input. Input bias current 50 nA typ., input offset current 5 nA typ., input resistance 5 MΩ typ.
7 B_OUT output Amplifier B output. Class-AB output stage capable of swinging ±14 V typ. into a ≥10 kΩ load (±13 V typ. into ≥2 kΩ) at ±15 V supply.
8 V+ power_in Positive supply rail. Rated +18 V absolute maximum relative to V-; shared by both amplifier channels. Typical operating current 3.5 mA at ±15 V.

Key specifications

Parameter Value
Manufacturer KEXIN
Package SOP-8
Category Op-amp/Cmp
Pins 8

CAD (KiCad official)

  • Symbol: NJM4558
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: KEXIN datasheet (2 pp, sha256 239207a261cbda01, 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