High-voltage latch-up prevention guaranteed

10th December 2013

Analog Devices

Staff Reporter

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Four new 8-kV ESD swicthes from Analog Devices guarantee latch-up prevention in high-voltage industrial applications operating up to ±22 Vds or +40 Vss. The new ADG5401, ADG5421, ADG5423 and ADG5419 single and dual switches expand Analog's latch-up immune family, which now includes configurations from SPSTx1 switches to 32:1 multiplexers. Leading to device failure, Latch-up is an undesirable high-current state that persists until the power supply is turned off.

Achieving an industry best 8-kV HBM (human body model) ESD rating, the trench isolation between the N-channel and P-channel transistors of each CMOS switch provides guaranteed latch-up immunity under all conditions. Both these features help shield equipment from excess current and eliminate the need for designers to install additional protection circuitry. The new switches also have low Ron flatness and performance which minimises temperature variation and feedback resistance and optimises gain switching.

Product	Configuration	Sample Availability	Production	Price Each Per 1,000	Packaging
ADG5401	1 x SPST	NOW	NOW	$1.60	8-lead MSOP, LFCSP
ADG5419	1 x SPDT	NOW	NOW	$1.71	8-lead MSOP, LFCSP
ADG5421	2 x SPST	NOW	NOW	$1.85	10-lead MSOP, LFCSP
ADG5423	2 x SPST	NOW	NOW	$1.85	10-lead MSOP, LFCSP