# CBM8542AS8

**Corebai Microelectronics** · Operational Amplifier · SOP-8

CBM8542AS8 from Corebai Microelectronics, 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 | Amplifier A output with rail-to-rail swing, within 8mV of the rail at RL=10kΩ and a short-circuit current of 55mA. |
| 2 | -IN A | input | Amplifier A inverting input, diode-clamped to the supply rails, with input signals more than 0.5V beyond the rails limited to 10mA. |
| 3 | +IN A | input | Amplifier A non-inverting input, with a common-mode range of -0.1V to 5.6V at Vs=5.5V and diode-clamped to the supply rails. |
| 4 | V- | power_in | Negative supply (ground in single-supply use); total supply V+ to V- is 2.5V to 5.5V, with an absolute maximum of 7.0V. |
| 5 | +IN B | input | Amplifier B non-inverting input, with a common-mode range of -0.1V to 5.6V at Vs=5.5V and diode-clamped to the supply rails. |
| 6 | -IN B | input | Amplifier B inverting input, diode-clamped to the supply rails, with input signals more than 0.5V beyond the rails limited to 10mA. |
| 7 | OUT B | output | Amplifier B output with rail-to-rail swing, within 8mV of the rail at RL=10kΩ and a short-circuit current of 55mA. |
| 8 | V+ | power_in | Positive supply, 2.5V to 5.5V with 7.0V absolute maximum between V+ and V-, and a 0.1uF capacitor placed closely across the supply pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOP-8 |
| Category | Amplifiers |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `CBM8542AS8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cbm8542as8-etched.step` / `cbm8542as8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm8542as8.step` / `cbm8542as8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Corebai Microelectronics datasheet](docs/cbm8542as8-datasheet.pdf) (21 pp, sha256 `433cd7c36cbead69`, retrieved 2026-11-02, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cbm8542as8-datasheet.pdf)