HV2705 Datasheet | Supertex

Features - - HVCMOS technology for high performance - - Integrated bleed resistors on the outputs - - 16-channel high voltage analog switch - - 3.3V input logic level patible - - 20MHz data shift clock frequency - - Very low quiescent power dissipation (-10µA) - - Low parasitic capacitance - - DC to 50MHz small signal frequency response - - -60d B typical off-isolation at 5.0MHz - - CMOS logic circuitry for low power - - Low harmonic distortion - - Cascadable serial data register with latches - - Flexible operating supply voltages Applications - - Medical ultrasound imaging - - NDT metal flaw detection - - Piezoelectric transducer drivers - - Optical MEMS modules General Description The Supertex HV2705 and HV2706 are low charge injection, 16-channel, high voltage analog switch integrated circuits (ICs) with bleed resistors. The devices can be used in applications requiring high voltage switching controlled by low voltage control signals, such as medical ultrasound imaging and piezoelectric transducer drivers. The bleed resistors eliminate voltage build-up on capacitive loads such as piezoelectric transducers. The HV2706 has a different pin configuration than the HV2705. Input data are shifted 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 HVCMOS technology, this device bines 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 binations of high voltage supplies, e.g., VPP/VNN: +40V/-160V, +100V/-100V, and +160V/-40V. Block Diagram Latches D LE CLR Level Output Shifters Switches SW0 16-Bit Shift Register D LE CLR D LE CLR SW1 SW2 DOUT D LE CLR D LE...