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Analog switches tout up to 200V operating voltage

Posted: 06 Feb 2012 ?? ?Print Version ?Bookmark and Share

Keywords:analog switch? ultrasound imaging? piezoelectric?

Supertex Inc. has announced a couple of 32-channel analog switches that claim to offer robust latch up protection and quiescent current of less than 10uA. The company added that the HV2801 and HV2901 produce optimal efficiency in attenuation and controlling high voltage analog switching with a low voltage signal.

The chips can be used in applications that include diagnostic medical ultrasound imaging, non-destructive metal flaw detection, inkjet printer heads and piezoelectric transducer drivers. The HV2801 and HV2901 feature 18? on-resistance to minimize return signal attenuation, serial shift registers that reduce I/O connections in space-constrained applications, and up to 200V operating voltage for deeper body tissue imaging capability, said Supertex.

The devices support multiple combinations of high voltage supplies to accommodate different operating modes such as 40V/-160V, 100V/-100V and 160V/-40V (Vpp/Vnn). The HV2901 also features integrated bleed resistors to discharge residual DC voltages and reduce erroneous signals.

The HV2801 and HV2901 are RoHS compliant and available in 64-lead QFN packages (HV2801K6-G and HV2901K6-G). Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing is $19.34 each for both HV2801K6-G and HV2901K6-G, in 1K quantities.

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