RS8558XK

@@ -0,0 +1,48 @@+# RS8558XK++**Jiangsu RUNIC Tech** · Precision OpAmps · SOP-8++RS8558XK from Jiangsu RUNIC Tech, 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 | OUTA | output | Output of amplifier A. Rail-to-rail output swing; typical short-circuit current 48mA. VOH within 2mV of V+ and VOL within 1mV of V- with RL=100kΩ. |+| 2 | -INA | input | Inverting input of amplifier A. Rail-to-rail input; common-mode range extends (V-)-0.2V to (V+)+0.2V. Input bias current typically 50pA. |+| 3 | +INA | input | Non-inverting input of amplifier A. Rail-to-rail input; common-mode range (V-)-0.2V to (V+)+0.2V. Input bias current typically 50pA. |+| 4 | V- | power_in | Negative supply rail (or ground for single-supply operation). Supply range +2.7V to +5.5V referenced to V+; absolute max V+ to V- is 7.0V. |+| 5 | +INB | input | Non-inverting input of amplifier B. Rail-to-rail input; common-mode range (V-)-0.2V to (V+)+0.2V. Input bias current typically 50pA. |+| 6 | -INB | input | Inverting input of amplifier B. Rail-to-rail input; common-mode range (V-)-0.2V to (V+)+0.2V. Input bias current typically 50pA. |+| 7 | OUTB | output | Output of amplifier B. Rail-to-rail output swing; typical short-circuit current 48mA. VOH within 2mV of V+ and VOL within 1mV of V- with RL=100kΩ. |+| 8 | V+ | power_in | Positive supply rail. Supply range +2.7V to +5.5V (single supply) or ±1.35V to ±2.75V (dual supply). Absolute max V+ to V- is 7.0V; quiescent current 650µA per amplifier (typ). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Jiangsu RUNIC Tech |+| Package | SOP-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++- `RS8558XK`+- `RS8558XKXM`++## CAD (KiCad official)++- Symbol: `RS8558XK`+- 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:** [Jiangsu RUNIC Tech datasheet](docs/rs8558xk-datasheet.pdf) (13 pp, sha256 `c9d7ae209903208c`, 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/rs8558xk-datasheet.pdf)

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