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ADI digital isolators reduce per-channel costs

Posted: 19 Jun 2003 ?? ?Print Version ?Bookmark and Share

Keywords:analog devices? digital isolator? icoupler? optocoupler? adum130x?

Analog Devices Inc. has announced the addition of multi-channel digital isolators to its iCoupler family of isolators for high-voltage industrial applications. The triple and quad-channel iCoupler devices eliminate multiple components, and provide a 60 percent reduction in circuit board space, a 40 percent reduction in per-channel cost, and up to a 98 percent reduction in power consumption over the optocouplers.

The isolators feature an isolation technology based on planar magnetics rather than the LED/photodiode combination used in optocouplers. By eliminating the electro-optic conversions present in optocoupler devices, iCoupler components are able to operate at one-tenth to one-fiftieth the power without the need for external components to drive LEDs.

The ADuM130x/ADuM140x family consists of five products covering all possible channel directionality configurations. The ADuM1300 and ADuM1301 products are triple-channel isolators, while the ADuM1400, ADuM1401, and ADuM1402 products are quad-channel isolators. Each of the five products is available in three performance grades supporting data rates of 1-, 10-, and 100Mbps with appropriate timing accuracies for each data rate.

All devices operate with the supply voltage of either side ranging from 2.7V to 5.5V, and have low pulse width distortion and channel-to-channel matching values reaching as low as 2ns for the high-performance grade. All this is provided with low power consumption ranging from 0.4mA per channel at 2Mbps up to 24mA at 100Mbps.

The ADuM130xARW is priced at $2.22, the ADuM130xBRW at $2.97, the ADuM130xCRW at $3.99, the ADuM140xARW at $2.96, the ADuM140xBRW at $3.96, and the ADuM140xCRW at $4.48. All products are priced per unit in 1,000-piece quantities, and are available in 16-lead SOIC packaging.

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