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General Description

The HV2601/HV2701 devices are low-charge injection,

16-channel, high-voltage analog switch integrated

circuits (ICs). These devices are designed for use in

applications requiring high-voltage switching controlled

by low-voltage control signals, such as medical

ultrasound imaging and other piezoelectric transducer

drivers. The HV2701 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. Using

High-Voltage CMOS technology, these devices

combine 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

? High-Voltage CMOS Technology for High

Performance

? 16-Channel High-Voltage Analog Switch

? 3.3V Input Logic Level Compatible

? 20 MHz Data Shift Clock Frequency

? Very Low Quiescent Power Dissipation (–10 μA)

? Low Parasitic Capacitance

? DC to 50 MHz Small Signal Frequency Response

? –60 dB Typical OFF-Isolation at 5.0 MHz

? CMOS Logic Circuitry for Low Power

? Excellent Noise Immunity

? Cascadable Serial Data Register with Latches

? Flexible Operating Supply Voltages

? Integrated Bleed Resistors on the Outputs (HV2701 Only)

Applications

? Medical Ultrasound Imaging

? NDT Metal Flaw Detection

? Piezoelectric Transducer Drivers

? Optical MEMS Modules