General Description

The Supertex HV2203 is a low charge injection 8-channel high voltage analog switch integrated circuit (IC) intended for use in applications requiring high voltage switching controlled by low voltage signals, such as medical ultrasound imaging, piezoelectric transducer driver, and printers.

Data is input into an 8-bit shift register that can then be retained in an 8-bit latch. To reduce any possible clock feed-through noise, the latch enable bar should be left high until all bits are clocked in. Data is clocked in during the rising edge of the clock.

Using HVCMOS technology, this device combines high voltage bilateral DMOS switches and low power CMOS logic to provide effi cient control of high voltage analog signals.

Features

► HVCMOS technology for high performance

► 3.3V or 5.0V CMOS input logic level

► 20MHz data shift clock frequency

► Very low quiescent power dissipation - 10µA

► Low parasitic capacitance

► DC to 10MHz analog signal frequency

► -60dB typical off-isolation at 5MHz

► CMOS logic circuitry for low power

► Excellent noise immunity

► Cascadable serial data register with latches

► Flexible operating supply voltages

Applications

► Medical ultrasound imaging

► NDT metal fl aw detection

► Piezoelectric transducer drivers

► Inkjet printer heads

► Optical MEMS modules