# CC6905S8-5FB040

**Cross chip** · Current Sensors · SOP-8

CC6905S8-5FB040 from Cross chip, 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 | IP+ | passive | Current-sampled positive terminal of the primary copper conductor, with 100 VRMS isolation between pins 1-4 and pins 5-8. |
| 2 | IP+ | passive | Second current-sampled positive terminal (IP+), listed with the same function as pin 1. |
| 3 | IP- | passive | Current-sampled negative terminal of the primary copper conductor, with 100 VRMS isolation from pins 5-8. |
| 4 | IP- | passive | Second current-sampled negative terminal (IP-), listed with the same function as pin 3. |
| 5 | GND | power_in | Ground reference pin for the sensor circuit. |
| 6 | VREF | power_in | Built-in reference output voltage, used to set the quiescent output level; the datasheet also offers an external VREF input option. |
| 7 | VOUT | output | Single-ended analog output voltage, with an absolute maximum of VCC + 0.3 V and a maximum output source current of 25 mA. |
| 8 | VCC | power_in | Supply voltage input, with an absolute maximum rating of 6.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Cross chip |
| Package | SOP-8 |
| Category | Magnetic Sensors |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Supply Voltage (5V series) | VCC | 4.5 | 5 | 5.5 | V | VCC=5V series | 6 |
| Quiescent Current | ICC | 10 | 12 | 14 | mA | VCC=5V | 6 |
| VREF Output Voltage (5V bidirectional) | VREF | 2.45 | 2.5 | 2.55 | V | 5V bidirectional nominal supply voltage series | 6 |
| VREF Input Voltage | VREFIN | 0 |  | 4 | V | VREF Input voltage range | 6 |
| Operating Ambient Temperature |  | -40 |  | 125 | °C | Operating ambient temperature range | 1 |
| Measuring Current Range (CC6905S8-5FB040) | IP | -40 |  | 40 | A | CC6905S8-5FB040, -40A ~ +40A, 5V nominal supply | 43 |
| Output Voltage Operating Range (bidirectional, 5V) | VOOR | -2 |  | 2 | V | VCC 5V, bidirectional output mode (printed ±2) | 45 |
| Sensitivity (CC6905S8-5FB040) |  |  | 50 |  | mV/A | CC6905S8-5FB040, 5V series | 3 |
| Room Temperature Error |  | -1 |  | 1 | % | Room temperature error | 1 |
| Sensitivity Temperature Drift |  | -2.5 |  | 2.5 | % | Sensitivity temperature drift up to ±2.5% | 1 |
| Primary Conductor Temperature Coefficient |  |  | 3900 |  | ppm/°C | Typical temperature coefficient of the input wire | 41 |
| Absolute Maximum Power Supply Voltage | VCC |  |  | 6.5 | V | Absolute maximum ratings | 5 |
| Output Source Current | IOUT(SOURCE) |  |  | 25 | mA | Absolute maximum ratings | 5 |
| Operating Ambient Temperature (absolute maximum) | TA |  |  | 125 | °C | Absolute maximum ratings | 5 |
| Junction Temperature | TJ |  |  | 165 | °C | Absolute maximum ratings | 5 |
| Storage Temperature | TS |  |  | 150 | °C | Absolute maximum ratings | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | foil 400mm2 connected to IP pins, each layer of copper foils connected by over-hole. Test environment: open environment, quiescent air Package Thermography Package Thermography | 47 |

## CAD (KiCad official)

- Symbol: `CC6905S8-5FB040`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cc6905s8-5fb040-etched.step` / `cc6905s8-5fb040-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cc6905s8-5fb040.step` / `cc6905s8-5fb040.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Cross chip datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604429971285037056) (56 pp, sha256 `86071652e648b8e7`, retrieved 2026-10-17, tier: lcsc)
- **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/cc6905s8-5fb040-datasheet.pdf)