component
CC6937S8-3FB020
Public Made by Adomby adom
Cross chip Current Sensors, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCC6937S8-3FB020
Cross chip · Current Sensors · SOP-8
CC6937S8-3FB020 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 | Primary current input (positive side, paired with pin 2) that carries the measured current, which is positive when it flows from IP+ to IP-, and the primary is isolated 3750 VRMS from pins 5-8 for this -20A to +20A (66 mV/A) variant. |
| 2 | IP+ | passive | Primary current input (positive side, paired with pin 1) that carries the measured current, which is positive when it flows from IP+ to IP-, and the primary is isolated 3750 VRMS from pins 5-8 for this -20A to +20A (66 mV/A) variant. |
| 3 | IP- | passive | Primary current return (negative side, paired with pin 4) that completes the series current path through the chip, and the primary is isolated 3750 VRMS from pins 5-8. |
| 4 | IP- | passive | Primary current return (negative side, paired with pin 3) that completes the series current path through the chip, and the primary is isolated 3750 VRMS from pins 5-8. |
| 5 | GND | power_in | Ground reference for the supply, the VREF output and the VOUT output, with VOUT and VREF filter capacitors (1 to 2.2 nF) specified from their pins to GND. |
| 6 | VREF | power_in | Reference pin used as an output at 1.60 to 1.70 V (1.65 V typical) for the 3.3 V series with a 1 to 2.2 nF filter to GND and at least 1.5 kΩ load, or as an input accepting 0 to 4 V to set the quiescent output VOUT(Q). |
| 7 | VOUT | output | Single-ended analog output whose quiescent value equals VREF (1.65 V at zero current for the 3.3 V series), with a 1 to 2.2 nF filter to GND, at least 1.5 kΩ load, and a 30 mA short-circuit limit. |
| 8 | VCC | power_in | Supply input with 3.0 to 3.6 V nominal (3.3 V typical) for the 3.3 V series, an absolute maximum of 6.5 V, and an undervoltage lockout threshold of 2.8 V with 0.16 V hysteresis. |
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 | VCC | 6.5 | V | 4 | |||
| Operating Ambient Temperature | TA | -40 | 125 | °C | 4 | ||
| Junction Temperature | TJ | 165 | °C | 4 | |||
| Storage Temperature | TS | -55 | 150 | °C | 4 | ||
| Output Source Current | IOUT(SOURCE) | 25 | mA | 4 | |||
| Latch Up | LU | 200 | mA | 4 | |||
| Electrostatic Discharge Voltage (ESD) HBM | 4 | kV | HBM | 4 | |||
| Electrostatic Discharge Voltage (ESD) CDM | 1 | kV | CDM | 4 | |||
| Withstand Isolation Voltage | VISO | 3750 | VRMS | Type test, 50/60Hz, 1min | 4 | ||
| Clearance | Dcl | 4.3 | mm | minimum distance through air from IP leads to signal leads | 4 | ||
| Creepage | Dcr | 4.3 | mm | minimum distance from the IP wire to the signal wire along the package | 4 | ||
| Maximum Surge Isolation Voltage | VIOSM | 7 | kV | IEC 61000-4-5, tested in air, ± 5 pulses, 2 times/min, 1.2us (rise) / 50us (width) | 4 | ||
| Surge Current | ISURGE | 9 | kA | IEC 61000-4-5, tested in air, ± 5 pulses, 1 times/min, 8µs (rise) / 20µs (width) | 4 | ||
| Power Supply Voltage (VCC=3.3V series) | VCC | 3 | 3.3 | 3.6 | V | Supply Section, VCC=3.3V | 5 |
| Quiescent Current (VCC=3.3V series) | ICC | 7 | 9 | 11 | mA | Supply Section, VCC=3.3V | 5 |
| VOUT Filter Capacitors | COUT | 1 | 2.2 | nF | VOUT to GND | 5 | |
| VREF Filter Capacitors | CREF | 1 | 2.2 | nF | VOUT to GND | 5 | |
| VREF Output Voltage (3.3V nominal supply voltage series) | VREF | 1.6 | 1.65 | 1.7 | V | 3.3V nominal supply voltage series | 5 |
| VREF Input Voltage | VREFIN | 0 | 4 | V | VREF Input voltage range | 5 | |
| Current Accuracy Range | IP | -20 | 20 | A | 11 | ||
| Zero Current Differential Output Error | VOE | -10 | 10 | mV | TA=25°C, VOE=VOUT-VREF, IP=0A | 11 | |
| Zero Current Output Offset Drift | ΔVOE | -30 | 30 | mV | TA=-40°C ~125°C; VOE offset voltage drift = VOE_TA - VOE_25℃ | 11 | |
| Noise | VN(RMS) | 11.25 | mV | IP=0A | 11 | ||
| Zero Current Quiescent Output Voltage | VOUT(Q) | 1.64 | 1.65 | 1.66 | V | TA=25°C, IP=0A | 11 |
| Zero Current Quiescent Output Voltage Temperature Drift | ΔVOUT(Q) | -30 | 30 | mV | TA=-40°C ~125°C; VOUT(Q) voltage drift = VOUT(Q)_TA - VOUT(Q)_25℃ | 11 | |
| Sensitivity Error | ΔSENS | -3 | 3 | % | TA=-40°C ~ 125°C | 11 | |
| Total Output Error | ETOT | -3.5 | 3.5 | % | TA=-40°C ~ 125°C, IP=IP_MAX | 11 | |
| Sensitivity | Sens | 66 | mV/A | full range of IP | 11 |
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 | interference of external magnetic field. The typical resistance of the primary current input conductor at 25°C is 0.5mΩ. The lead frame is made of copper. The temperature | 28 |
CAD (KiCad official)
- Symbol:
CC6937S8-3FB020 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
cc6937s8-3fb020-etched.step/cc6937s8-3fb020-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cc6937s8-3fb020.step/cc6937s8-3fb020.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Cross chip datasheet (40 pp, sha256
7e94e7934f32e852, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).