Analog Devices introduced four 8 kV ESD (electrostatic discharge) switches that guarantee latch-up prevention in high-voltage industrial applications operating up to ±22 Vds or +40 Vss. The ADG5401, ADG5421, ADG5423 and ADG5419 single and dual switches are new additions to the latch-up immune family, which now includes configurations from SPSTx1 switches to 32:1 multiplexers.
Trench isolation between the N-channel and P-channel transistors of each CMOS switch provides guaranteed latch-up immunity under all conditions. The switches also achieve 8 kV HBM (human body model) ESD rating. Both 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.
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