STMicroelectronics STHV64SW 64-channel high-voltage switch IC

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STMicroelectronics’ 64-channel high-voltage analog-switch IC delivers integration for ultrasound systems, probes, piezoelectric drivers, automated test equipment, industrial automation and process-control systems.

The STHV64SW comprises a shift register for logic control signals, self-biased high-voltage MOSFET gate drivers and N-channel MOSFET switches capable of providing up to ±3 A peak output current. The switches respond quickly, with 1.5 µs turn-on time, and low quiescent current saves power when turned off. Low on-resistance with low distortion and crosstalk ensure high signal integrity. Thermal shutdown and under-voltage lockout (UVLO) are built in to ensure safe operation.

ST created the device leveraging proprietary BCD6s-SOI (silicon on insulator) and BCD8s SOI process technologies to combine precise analog circuitry (bipolar), low-voltage CMOS logic and robust DMOS power stages on the same chip. The product can operate with various combinations of high-voltage supplies up to -100/+100, 0/200 or -200/0 V.

The unit has already been designed into innovative high-tech equipment such as ultrasonic flaw detectors for industrial non-destructive testing (NDT), as well as into portable handheld medical echography devices for prenatal care in remote and rural communities.

The highly integrated 64-channel analog-switch IC comes in a small FCBGA package, enabling system manufacturers to increase channel density for good ultrasound image resolution using minimal board space.

For more information: www.st.com/sthw64sw-pr.