# RS8512XK

**Jiangsu RUNIC Tech** · Precision Op Amps · SOP-8

RS8512XK from Jiangsu RUNIC Tech, in a SOP-8. 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, which swings rail-to-rail and is rated for a short-circuit current (ISC) of 25 mA. |
| 2 | -IN A | input | Inverting input of amplifier A; the common-mode range is (V-) - 0.1 V to (V+) + 0.1 V, and input current must be limited to 10 mA if the input swings more than 0.5 V beyond the supply rails. |
| 3 | +IN A | input | Non-inverting input of amplifier A; the common-mode range is (V-) - 0.1 V to (V+) + 0.1 V, and input current must be limited to 10 mA if the input swings more than 0.5 V beyond the supply rails. |
| 4 | V- | power_in | Negative power supply (V-); the operating supply is +2.5 V to +5.5 V total (V+ to V-), and supplies above 7 V absolute maximum can permanently damage the amplifier. |
| 5 | +IN B | input | Non-inverting input of amplifier B; the common-mode range is (V-) - 0.1 V to (V+) + 0.1 V, and input current must be limited to 10 mA if the input swings more than 0.5 V beyond the supply rails. |
| 6 | -IN B | input | Inverting input of amplifier B; the common-mode range is (V-) - 0.1 V to (V+) + 0.1 V, and input current must be limited to 10 mA if the input swings more than 0.5 V beyond the supply rails. |
| 7 | OUT B | output | Output of amplifier B, which swings rail-to-rail and is rated for a short-circuit current (ISC) of 25 mA. |
| 8 | V+ | power_in | Positive power supply (V+); the operating supply is +2.5 V to +5.5 V total (V+ to V-), and supplies above 7 V absolute maximum can permanently damage the amplifier. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage range (supply) |  | 2.5 |  | 5.5 | V |  | 4 |
| Input offset voltage | Vos |  | 7 | 40 | μV | VCM = Vs/2 | 4 |
| Input offset voltage drift vs temperature | dVos/dT |  | 0.05 | 0.2 | μV/°C |  | 4 |
| Power supply rejection ratio | PSRR | 110 | 130 |  | dB | VS = +2.5V to +5.5V, VCM = 0 | 4 |
| Common-mode rejection ratio | CMRR | 110 | 130 |  | dB | (V-), 0.1V < VCM < (V+)+ 0.1V | 4 |
| Open-loop voltage gain | AOL | 110 | 130 |  | dB | RL=10KΩ, VO=0.3V to 4.7V, -40°C~125°C | 4 |
| Output voltage high | VOH | 4.99 | 4.998 |  | V | RL=100 KΩ to GND | 4 |
| Output voltage high | VOH | 4.95 | 4.98 |  | V | RL=10 KΩ to GND | 4 |
| Output voltage low | VOL |  | 1 | 10 | mV | RL=100 KΩ to V+ | 4 |
| Output voltage low | VOL |  | 10 | 30 | mV | RL=10 KΩ to V+ | 4 |
| Quiescent current per amplifier | IQ |  | 60 | 87 | uA |  | 4 |
| Input bias current | IB |  | 50 |  | pA | VCM = Vs/2 | 4 |
| Input offset current | Ios |  | 10 |  | pA |  | 4 |
| Channel separation, dc |  |  | 0.1 |  | μV/V | dc | 4 |
| Input voltage noise, 0.01 Hz to 10 Hz | enp-p |  | 1.6 |  | μVpp | f=0.01Hz to 10Hz | 4 |
| Input voltage noise, 0.01 Hz to 1 Hz | enp-p |  | 0.48 |  | μVpp | f=0.01Hz to 1Hz | 4 |
| Input voltage noise density | en |  | 70 |  | nV/√Hz | f=1KHz | 4 |
| Input current noise density | in |  | 8 |  | fA/√Hz | f=10Hz | 4 |
| Differential input capacitance |  |  | 1 |  | pF |  | 4 |
| Common-mode input capacitance |  |  | 5 |  | pF |  | 4 |
| Slew rate | SR |  | 0.17 |  | V/μs | G=+1 | 4 |
| Gain-bandwidth product | GBW |  | 350 |  | KHz |  | 4 |
| Overload recovery time |  |  | 6 |  | us |  | 4 |
| Short-circuit current | ISC |  | 25 |  | mA |  | 4 |
| Supply voltage, V+ to V- |  |  |  | 7 | V |  | 3 |
| Input terminals voltage (lower limit; upper limit is (V+)+0.5 V expression) |  | -0.5 |  |  | V |  | 3 |
| Input terminals current |  | -10 |  | 10 | mA |  | 3 |
| Storage temperature |  | -65 |  | 150 | °C |  | 3 |
| Operating temperature |  | -40 |  | 125 | °C |  | 3 |
| Junction temperature |  |  |  | 150 | °C |  | 3 |
| ESD MM |  |  |  | 400 | V | MM | 3 |
| Package thermal resistance, SOIC-8 (datasheet row shared with MSOP-10) |  |  | 150 |  | °C/W | @ TA = +25°C | 3 |

## CAD (KiCad official)

- Symbol: `RS8512XK`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `rs8512xk-etched.step` / `rs8512xk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs8512xk.step` / `rs8512xk.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu RUNIC Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907359678291968) (15 pp, sha256 `cbc1e92866b6fd73`, retrieved 2026-10-19, 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/rs8512xk-datasheet.pdf)