# CBM8091AST5

**Corebai Microelectronics** · Operational Amplifier · SOT-23-5

CBM8091AST5 from Corebai Microelectronics, in a SOT-23-5. 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 | output | Amplifier output with rail-to-rail swing, typically within 30mV of the supply rail with loads above 1kΩ and within 120mV with a 150Ω load. |
| 2 | VSS | power_in | Negative supply, which is ground in single-supply operation; the supply range from VDD to VSS is 2.5V to 5.5V. |
| 3 | IN+ | input | Non-inverting input, with a common-mode range of -0.2V to +3.8V typical and an absolute maximum of VSS-0.5V to VDD+0.5V. |
| 4 | IN- | input | Inverting input, with an absolute maximum of VSS-0.5V to VDD+0.5V. |
| 5 | VDD | power_in | Positive supply, specified for 2.5V to 5.5V single-supply operation, with a 0.1µF ceramic bypass capacitor placed close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## 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 |  | 2.5 |  | 5.5 | V | +25°C | 6 |
| Operating Voltage Range |  | 2.7 |  | 5.5 | V | 0°C to 70°C | 6 |
| Quiescent Current (per amplifier) |  |  | 4.2 | 5.3 | mA | +25°C | 6 |
| Quiescent Current (per amplifier) |  |  |  | 5.6 | mA | 0°C to 70°C | 6 |
| Quiescent Current (per amplifier) |  |  |  | 5.7 | mA | -40°C to 85°C | 6 |
| Quiescent Current (per amplifier) |  |  |  | 6.1 | mA | -40°C to 125°C | 6 |
| Input Offset Voltage (TYP column) | VOS | -2 |  | 2 | mV | TYP column, +25°C | 5 |
| Input Offset Voltage | VOS | -8 |  | 8 | mV | +25°C | 5 |
| Input Offset Voltage | VOS | -8.5 |  | 8.5 | mV | 0°C to 70°C | 5 |
| Input Offset Voltage | VOS | -9 |  | 9 | mV | -40°C to 85°C | 5 |
| Input Offset Voltage | VOS | -9.3 |  | 9.3 | mV | -40°C to 125°C | 5 |
| Open-Loop Gain (RL = 150Ω) | AOL | 75 | 80 |  | dB | VO = 0.3V to 4.7V, RL = 150Ω; +25°C | 5 |
| Open-Loop Gain (RL = 150Ω) | AOL | 74 |  |  | dB | VO = 0.3V to 4.7V, RL = 150Ω; 0°C to 70°C | 5 |
| Open-Loop Gain (RL = 150Ω) | AOL | 70 |  |  | dB | VO = 0.3V to 4.7V, RL = 150Ω; -40°C to 125°C | 5 |
| Open-Loop Gain (RL = 1kΩ) | AOL | 91 | 104 |  | dB | VO = 0.2V to 4.8V, RL = 1kΩ; +25°C | 5 |
| Open-Loop Gain (RL = 1kΩ) | AOL | 91 |  |  | dB | VO = 0.2V to 4.8V, RL = 1kΩ; 0°C to 70°C | 5 |
| Open-Loop Gain (RL = 1kΩ) | AOL | 80 |  |  | dB | VO = 0.2V to 4.8V, RL = 1kΩ; -40°C to 125°C | 5 |
| Common-Mode Rejection Ratio | CMRR | 66 | 80 |  | dB | VCM = -0.1V to +3.5V; +25°C | 5 |
| Common-Mode Rejection Ratio | CMRR | 65 |  |  | dB | VCM = -0.1V to +3.5V; 0°C to 70°C | 5 |
| Common-Mode Rejection Ratio | CMRR | 62 |  |  | dB | VCM = -0.1V to +3.5V; -40°C to 125°C | 5 |
| Input Common-Mode Voltage Range | VCM | -0.2 |  | 3.8 | V |  | 5 |
| Output Current |  | 100 | 120 |  | mA | +25°C | 6 |
| Output Current |  | 98 |  |  | mA | 0°C to 70°C | 6 |
| Output Current |  | 93 |  |  | mA | -40°C to 85°C | 6 |
| Output Current |  | 87 |  |  | mA | -40°C to 125°C | 6 |
| Power Supply Rejection Ratio (PSRR) | PSRR | 67 | 80 |  | dB | ΔVS = +2.7V to +5.5V, VCM = (-VS) +0.5; +25°C | 6 |
| Power Supply Rejection Ratio (PSRR) | PSRR | 67 |  |  | dB | ΔVS = +2.7V to +5.5V, VCM = (-VS) +0.5; 0°C to 70°C | 6 |
| Power Supply Rejection Ratio (PSRR) | PSRR | 65 |  |  | dB | ΔVS = +2.7V to +5.5V, VCM = (-VS) +0.5; -40°C to 85°C | 6 |
| Power Supply Rejection Ratio (PSRR) | PSRR | 62 |  |  | dB | ΔVS = +2.7V to +5.5V, VCM = (-VS) +0.5; -40°C to 125°C | 6 |
| Power Supply Voltage (VDD to VSS) | VDD-VSS | -0.5 |  | 7.5 | V | VDD to VSS | 3 |
| Operating Temperature Range | TA | -45 |  | 125 | ℃ |  | 3 |
| Junction Temperature | TJ |  |  | 160 | ℃ |  | 3 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 3 |
| Lead Temperature (soldering) |  |  |  | 260 | ℃ | soldering, 10 sec | 3 |
| ESD Susceptibility HBM |  |  |  | 6 | KV | HBM | 3 |
| ESD Susceptibility MM |  |  |  | 400 | V | MM | 3 |
| Package Thermal Resistance, junction-to-ambient (SOT23-5) | θJA |  | 190 |  | ℃/W | SOT23-5, TA=+25℃ | 3 |
| Operating Temperature |  | -40 |  | 125 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `CBM8091AST5`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `cbm8091ast5-etched.step` / `cbm8091ast5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm8091ast5.step` / `cbm8091ast5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Corebai Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590912542443728896) (21 pp, sha256 `53491816b845f3bf`, retrieved 2026-10-18, 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/cbm8091ast5-datasheet.pdf)