# CM5400-SOPTA

**CIMO** · Voltage Reference · SOP-8

CM5400-SOPTA from CIMO, 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 | NC | unconnected | Not internally connected; it may be left floating or connected to external ground. |
| 2 | VIN | power_in | Supply input, 7.2V to 40V. |
| 3 | CAP | passive | A compensation capacitor is connected between the CAP and VOUT pins for stability when the load capacitance C1 exceeds 0.01μF. |
| 4 | GND | power_in | Ground reference. |
| 5 | TRIM | passive | Output voltage trim pin; an external potentiometer between VOUT and GND, with its wiper connected through a large resistor (e.g. 300kΩ), adjusts the output by about ±0.34% (CM5405), ±0.6% (CM5407) or ±0.7% (CM5400). |
| 6 | VOUT | output | Voltage reference output. |
| 7 | NC | unconnected | Must be left floating. |
| 8 | NC | unconnected | Must be left floating. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CIMO |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage |  | 9.995 |  | 10.005 | V |  | 6 |
| Temperature drift |  |  | 1.5 | 3 | ppm/°C | TA = -55℃~125℃ | 6 |
| Line regulation |  |  | 1.2 | 5 | ppm/V | 11.5V ≤ VIN ≤ 14.5V, TA = -55℃~125℃ | 6 |
| Line regulation |  |  | 1 | 3 | ppm/V | 14.5V ≤ VIN ≤ 40V, TA = -55℃~125℃ | 6 |
| Load regulation |  |  | 5 | 10 | ppm/mA | ISOURCE = 0mA~10mA, TA = -55℃~125℃ | 6 |
| Load regulation |  |  | 7.5 | 15 | ppm/mA | ISINK = -10mA~0mA, TA = -55℃~125℃ | 6 |
| Quiescent power consumption |  |  | 1.5 | 1.8 | mA | TA = -55℃~125℃ | 7 |
| Operating temperature |  | -55 |  | 125 | °C |  | 5 |
| Storage temperature |  | -65 |  | 150 | °C |  | 5 |
| Junction temperature |  |  |  | 150 | °C |  | 5 |
| Lead-tin soldering temperature |  |  |  | 240 | °C | 10 秒到 30 秒 | 5 |
| Lead-free soldering temperature |  |  |  | 260 | °C |  | 5 |
| Input voltage |  |  |  | 40 | V |  | 5 |
| Input/output voltage difference |  |  |  | 35 | V |  | 5 |
| TRIM pin to GND pin voltage |  | -0.2 |  |  | V | max = VOUT | 5 |
| ESD HBM |  |  |  | 1000 | V |  | 5 |
| ESD CDM |  |  |  | 1000 | V |  | 5 |
| Supply voltage (VIN) |  | 7.2 |  | 40 | V |  | 4 |
| Output noise 0.1Hz~10Hz |  |  | 12.8 |  | μVpp | 0.1Hz~10Hz | 7 |
| Output noise 10Hz~1kHz |  |  | 9.3 |  | μVrms | 10Hz~1kHz | 7 |

## CAD (KiCad official)

- Symbol: `CM5400-SOPTA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cm5400-sopta-etched.step` / `cm5400-sopta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cm5400-sopta.step` / `cm5400-sopta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CIMO datasheet](docs/cm5400-sopta-datasheet.pdf) (11 pp, sha256 `95e86a0d3382425e`, retrieved 2026-10-27, 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 `off` (skipped (clean text read)), 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/cm5400-sopta-datasheet.pdf)