Silicon Labs introduces ISOPRO FAMILY

17 JUNE 2009

Silicon Laboratories Inc., a leader in high-performance, analog-intensive, mixed-signal ICs, introduced the Si84xx ISOpro digital isolator family, the industry’s first to support as many as six unidirectional isolation channels capable of data rates up to 150 Mbps. Offering space-efficient packaging options, a choice of isolation ratings up to 2.5 kVRMS and the industry’s most highly integrated I2C isolators, the ISOpro family delivers unsurpassed system design flexibility for use in applications such as power supplies, motor control systems, hybrid electric vehicles, industrial networking, medical and consumer products. For systems where galvanic isolation is required such as Power over Ethernet (PoE) power sourcing equipment (PSE), switch mode power supplies (SMPS) and isolated SMBus or PMBus interfaces, the ISOpro family includes single-chip, I2C-compatible isolators. The Si8400 provides bidirectional isolated channels on both the serial data (SDA) and serial clock (SCL) lines, combining the I2C transmit and receive lines to reduce BOM cost and complexity. The Si8405 offers two additional independent unidirectional channels for system signals such as a reset or interrupt, eliminating ten or more discrete components and the need for additional isolators on the PCB. In addition, the Si8400 and Si8405 support bus speeds of up to 1.7 Mbps, nearly twice as fast the competition, and I2C clock stretching to simplify the design task of matching bus speeds.

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