# CBM8605AST5

**Corebai Microelectronics** · Precision OpAmps · SOT-23-5

CBM8605AST5 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 | Output terminal of the single-channel amplifier (输出端). |
| 2 | V- | power_in | Negative power supply terminal (电源负极); the datasheet lists single-supply operation from 2.7 V to 5.5 V. |
| 3 | +IN | input | Non-inverting input terminal (同向输入端). |
| 4 | -IN | input | Inverting input terminal (反向输入端). |
| 5 | V+ | power_in | Positive power supply terminal (电源正极); the datasheet lists single-supply operation from 2.7 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOT-23-5 |
| Category | Operational Amplifier/Comparator |
| 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 |
|---|---|---|---|---|---|---|---|
| Input offset voltage | VOS |  | 20 | 65 | μV | VS = 3.5 V, VCM = 3 V | 6 |
| Input offset voltage | VOS |  | 80 | 300 | μV | VS = 5 V, VCM = 0 V 至 5 V | 6 |
| Input offset voltage drift | ΔVos/ΔT |  | 1 | 4.5 | μV/℃ | −40°C < TA < +125°C | 6 |
| Input bias current | IB |  | 0.2 | 1 | pA |  | 6 |
| Input offset current | IOS |  | 0.1 | 0.5 | pA |  | 6 |
| Input voltage range |  | 0 |  | 5 | V |  | 6 |
| Common-mode rejection ratio | CMRR | 85 | 100 |  | dB | VCM = 0 V 至 5 V | 6 |
| Open-loop voltage gain | AOL | 300 | 1000 |  | V/mV | RL=2KΩ,VO=0.5V 至 4.5V | 6 |
| High-level output voltage | VOH | 4.96 | 4.98 |  | V | IL = 1 mA | 6 |
| High-level output voltage | VOH | 4.7 | 4.79 |  | V | IL = 10mA | 6 |
| Low-level output voltage | VOL |  | 20 | 40 | mV | IL = 1 mA | 6 |
| Low-level output voltage | VOL |  | 170 | 210 | mV | IL = 10mA | 6 |
| Output current | IOUT | -80 |  | 80 | mA |  | 6 |
| Power supply rejection ratio | PSRR | 75 | 89 |  | dB | VCM = 2.7V 至 5.5V | 6 |
| Supply current per amplifier | ISY |  | 0.8 | 1.2 | mA | IOUT = 0 mA | 6 |
| Peak-to-peak input voltage noise | en p-p |  | 2.3 | 3.5 | μVp-p | f = 0.1 Hz 至 10 Hz | 6 |
| Voltage noise density | en |  | 8 | 12 | nV/√Hz | f = 1 kHz | 6 |
| Settling time | ts |  |  | 1 | us | 至 0.01%，0 V 至 2 V 步进，AV= 1 | 6 |
| Input offset voltage | VOS |  | 20 | 65 | μV | VS = 3.5 V, VCM = 3 V | 7 |
| Input offset voltage | VOS |  | 80 | 300 | μV | VS = 5 V, VCM = 0 V 至 2.7 V | 7 |
| Input offset voltage drift | ΔVos/ΔT |  | 1 | 4.5 | μV/℃ | −40°C < TA < +125°C | 7 |
| Input bias current | IB |  | 0.2 | 1 | pA |  | 7 |
| Input offset current | IOS |  | 0.1 | 0.5 | pA |  | 7 |
| Input voltage range |  | 0 |  | 2.7 | V |  | 7 |
| Common-mode rejection ratio | CMRR | 70 | 89 |  | dB | VCM = 0 V 至 2.7 V | 7 |
| Open-loop voltage gain | AOL | 110 | 350 |  | V/mV | RL=2KΩ,VO=0.5V 至 2.2V | 7 |
| High-level output voltage | VOH | 2.6 | 2.66 |  | V | IL = 1 mA | 7 |
| Low-level output voltage | VOL |  | 25 | 40 | mV | IL = 1 mA | 7 |
| Output current | IOUT | -30 |  | 30 | mA |  | 7 |
| Power supply rejection ratio | PSRR | 75 | 89 |  | dB | VCM = 2.7V 至 5.5V | 7 |
| Supply current per amplifier | ISY |  | 0.8 | 1.4 | mA | IOUT = 0 mA | 7 |
| Peak-to-peak input voltage noise | en p-p |  | 2.3 | 3.5 | μVp-p | f = 0.1 Hz 至 10 Hz | 7 |
| Voltage noise density | en |  | 8 | 12 | nV/√Hz | f = 1 kHz | 8 |
| Settling time | ts |  |  | 0.5 | us | 至 0.01%，0 V 至 1 V 步进，AV= 1 | 8 |
| Supply voltage (absolute maximum) |  |  |  | 6 | V |  | 5 |
| Differential input voltage |  |  |  | 6 | V |  | 5 |
| Storage temperature range |  | -65 |  | 150 | °C |  | 5 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 5 |
| Junction temperature range |  | -65 |  | 150 | °C |  | 5 |
| Lead temperature (soldering) |  |  |  | 300 | °C | 焊接, 60s | 5 |
| Thermal resistance (SOT23-5) |  |  | 240 |  | ℃/W |  | 5 |
| Single supply voltage range |  | 2.7 |  | 5.5 | V |  | 1 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `CBM8605AST5`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `cbm8605ast5-etched.step` / `cbm8605ast5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm8605ast5.step` / `cbm8605ast5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Corebai Microelectronics datasheet](docs/cbm8605ast5-datasheet.pdf) (15 pp, sha256 `da767aa1a5f738cc`, retrieved 2026-10-28, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/cbm8605ast5-datasheet.pdf)