Description
The HV2605 and HV2705 are 16-channel low
harmonic distortion high-voltage analog switch
integrated circuits (ICs). These devices are designed
for applications requiring high-voltage switching
controlled by low-voltage control signals, such as
medical ultrasound imaging and other piezoelectric
transducer drivers. The HV2705 has integrated bleed
resistors which eliminate voltage build-up on capacitive
loads such as piezoelectric transducers.
These ICs shift input data into a 16-bit Shift register that
can then be retained in a 16-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 are
clocked in during the rising edge of the clock. This
device combines high-voltage, bilateral DMOS
switches and low-power CMOS logic to provide
efficient control of high-voltage analog signals.
The device is suitable for various combinations of highvoltage
supplies, e.g., VPP/VNN: +40V/–160V,
+100V/–100V and +160V/–40V.

Features
• 16-channel High-voltage Analog Switch
• Low Harmonic Distortion
• Integrated Bleed Resistors on the Outputs for
HV2705
• 3.3V Input Logic Level Compatible
• –60 dB typical OFF-isolation at 5 MHz
• 20 MHz Data Shift Clock Frequency
• 10 μA Low-quiescent Power Dissipation
• Low Parasitic Capacitance
• DC to 50 MHz Small-signal Frequency Response
• CMOS logic Circuitry for Low Power
• Cascadable Serial Data Register with Latches
• Flexible Operating Supply Voltages

Applications
• Medical Ultrasound Imaging
• Non-destructive Metal Flaw Detection
• Piezoelectric Transducer Drivers
• Optical MEMS Modules