Silicon Labs launches digital isolator line

Silicon Laboratories Inc. launched the Si86xx line of digital isolators, which consists of six-channel devices rated to 5kV; bidirectional isolators for isolating I²C buses in a wide range of applications; and 3.75 kV options that provide higher levels of protection than currently available from 2.5 kV isolators.

According to Silicon Labs, the Si86xx 3.75 kV and 5 kV digital isolators can replace optocouplers in several applications, including industrial automation and drives, motor control and medical systems. With its 5 kV rating, the Si86xx family is well-suited for systems powered from 220 Vac mains supplies such as isolated ac-dc and dc-dc power supplies, as well as solar panel microinverters, data communications systems and hybrid electric vehicles (HEVs).

The Si86xx family offers electromagnetic emissions and immunity performance advantages, providing error-free data in noisy environments and up to 20 dB lower electromagnetic emissions than competing solutions, according to the company.

The Si86xx isolators deliver a fast data rate (150 Mbps) across the widest temperature range (-40 to 125ºC), as well as low power operation of less than 1.6 mA per channel at 1 Mbps for energy-efficient system design.

Key highlights:

• Up to 5000 VRMS isolation
• UL, CSA, VDE certification
• 60-year life at rated working voltage
• High electromagnetic immunity
• Supply voltage 2.5 to 5.5 V
• Independent, bidirectional SDA and SCL isolation channels

o    Open drain outputs with 35 mA sink current

o    Supports I2C clocks up to 1.7 MH

o    Unidirectional isolation channels support additional system signals (Si8605, Si8606)

• –40 to +125 °C temperature range
• Common mode transient immunity 50 kV/μs
• AEC-Q100 qualification
• RoHS-compliant packages

• SOIC-8 narrow body
• SOIC-16 wide body
• SOIC-16 narrow body

Pricing: In 10,000-unit quantities ranges from $1.06 for a single-channel, 3.75 kV rated device up to $3.76 for six-channel versions rated to 5 kV isolation in SOIC-16 packages.

Availability: Samples and production quantities of the Si86xx digital isolators are available now in a variety of packages, including wide-body SOIC-16 packages rated at 5 kV and narrow-body SOIC-8 and SOIC-16 packages rated at 3.75 kV. 

Datasheets:  Click here.