The HV2803/HV2903/HV2904 devices are low harmonic distortion, low charge injection, 32-channel, high-voltage analog switches without high-voltage supplies. They are intended for use in applications requiring high-voltage switching controlled by low-voltage control signals, such as medical ultrasound imaging, driving piezoelectric transducers and printers.
The HV2903 device has integrated bleed resistors at both sides of the switches; the HV2904 device has bleed resistors at one side only, while the HV2803 device has no bleed resistors. The bleed resistor eliminates voltage build-up on capacitive loads, such as piezoelectric transducers.