# RS522XM

**Jiangsu RUNIC Tech** · Operational Amplifier · MSOP-8

RS522XM from Jiangsu RUNIC Tech, in a MSOP-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 | Channel A amplifier output, rail-to-rail swing. |
| 2 | -IN A | input | Channel A inverting input; input range -0.1V to 5.6V at Vs=5.5V, diode-clamped to supply rails (limit current to 10mA). |
| 3 | +IN A | input | Channel A non-inverting input; input range -0.1V to 5.6V at Vs=5.5V, diode-clamped to supply rails (limit current to 10mA). |
| 4 | V- | power_in | Negative supply (ground in single-supply use); supply range V+ to V- is 2.5V to 5.5V, 7.0V absolute maximum. |
| 5 | +IN B | input | Channel B non-inverting input; input range -0.1V to 5.6V at Vs=5.5V, diode-clamped to supply rails (limit current to 10mA). |
| 6 | -IN B | input | Channel B inverting input; input range -0.1V to 5.6V at Vs=5.5V, diode-clamped to supply rails (limit current to 10mA). |
| 7 | OUT B | output | Channel B amplifier output, rail-to-rail swing. |
| 8 | V+ | power_in | Positive supply; 2.5V to 5.5V operation, with a 0.1uF bypass capacitor recommended close across the supply pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | MSOP-8 |
| Category | Amplifiers |
| 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 | Vs | 2.5 |  | 5.5 | V | 25C | 3 |
| Quiescent Current/Amplifier | IQ |  | 260 | 350 | uA | 25C | 3 |
| Power-Supply Rejection Ratio | PSRR | 76 | 86 |  | dB | Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, 25C | 3 |
| Power-Supply Rejection Ratio | PSRR | 69 |  |  | dB | Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, -40C to 125C | 3 |
| Input Offset Voltage | Vos |  | 0.8 | 3 | mV | 25C | 3 |
| Input Offset Voltage Average Drift | Vos TC |  | 2 |  | uV/C | -40C to 125C | 3 |
| Input Bias Current | IB |  | 1 | 10 | pA | 25C | 3 |
| Input Offset Current | Ios |  | 1 | 10 | pA | 25C | 3 |
| Common-Mode Voltage Range | Vcm | -0.1 |  | 5.6 | V | Vs=5.5V, 25C | 3 |
| Common-Mode Rejection Ratio | CMRR | 76 | 87 |  | dB | Vs=5.5V, Vcm=-0.1V to 4V, 25C | 3 |
| Common-Mode Rejection Ratio | CMRR | 71 |  |  | dB | Vs=5.5V, Vcm=-0.1V to 4V, -40C to 125C | 3 |
| Common-Mode Rejection Ratio | CMRR | 62 | 71 |  | dB | Vs=5.5V, Vcm=-0.1V to 5.6V, 25C | 3 |
| Common-Mode Rejection Ratio | CMRR | 60 |  |  | dB | Vs=5.5V, Vcm=-0.1V to 5.6V, -40C to 125C | 3 |
| Open-Loop Voltage Gain | AOL | 100 | 107 |  | dB | RL=2KΩ, Vo=0.15V to 4.85V, 25C | 3 |
| Open-Loop Voltage Gain | AOL | 86 |  |  | dB | RL=2KΩ, Vo=0.15V to 4.85V, -40C to 125C | 3 |
| Open-Loop Voltage Gain | AOL | 100 | 110 |  | dB | RL=10KΩ, Vo=0.05V to 4.95V, 25C | 3 |
| Open-Loop Voltage Gain | AOL | 87 |  |  | dB | RL=10KΩ, Vo=0.05V to 4.95V, -40C to 125C | 3 |
| Output Swing From Rail |  |  | 31 |  | mV | RL=2KΩ, 25C | 3 |
| Output Swing From Rail |  |  | 7 |  | mV | RL=10KΩ, 25C | 3 |
| Output Short-Circuit Current | Iout |  | 80 |  | mA | 25C | 3 |
| Slew Rate | SR |  | 1.8 |  | V/us | 25C | 3 |
| Gain-Bandwidth Product | GBP |  | 3.6 |  | MHz | 25C | 3 |
| Phase Margin | PM |  | 65 |  | ° | 25C | 3 |
| Setting Time, 0.1% | ts |  | 0.5 |  | us |  | 3 |
| Overload Recovery Time |  |  | 0.7 |  | us | VIN·Gain≥VS | 3 |
| Input Voltage Noise Density | en |  | 15 |  | nV/√Hz | f = 1KHz, 25C | 3 |
| Input Voltage Noise Density | en |  | 13 |  | nV/√Hz | f = 10KHz, 25C | 3 |
| Supply Voltage, V+ to V- |  |  |  | 7 | V |  | 2 |
| Input Terminals Voltage |  | -0.5 |  | 0.5 | V | -0.5 to (V+) + 0.5V; max is V+ plus 0.5 | 2 |
| Input Terminals Current |  | -10 |  | 10 | mA |  | 2 |
| Storage Temperature |  | -65 |  | 150 | °C |  | 2 |
| Operating Temperature |  | -40 |  | 125 | °C |  | 2 |
| Junction Temperature |  |  |  | 150 | °C |  | 2 |
| Package Thermal Resistance |  |  |  | 150 | °C/W | MSOP-10, SOIC-8 @ TA = +25°C | 2 |
| Lead Temperature |  |  |  | 260 | °C | Soldering, 10s | 2 |

## CAD (KiCad official)

- Symbol: `RS522XM`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `rs522xm-etched.step` / `rs522xm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs522xm.step` / `rs522xm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs522xm-datasheet.pdf) (14 pp, sha256 `c8e86d17f4ba6f0a`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/rs522xm-datasheet.pdf)