HV220

HV220/HV20220/HV20320 Low Charge Injection 8-Channel High Voltage Analog Switches Features HVCMOS® technology for high performance Very low quiescent power dissipation – 10µA Output on-resistance typically 22 ohms Low parasitic capacitances DC to 10MHz analog signal frequency -60dB typical output off isolation at 5MHz www.DataSheet4U.com CMOS logic circuitry for low power Excellent noise immunity On-chip shift register, latch and clear logic circuitry Flexible high voltage supplies General Description These devices are low charge injection 8-channel high-voltage analog switch integrated circuits (ICs) intended for use in applications requiring high voltage switching controlled by low voltage control signals, such as ultrasound imaging and printers. Input data is shifted into an 8-bit shift register which can then be retained in an 8-bit latch. To reduce any possible clock feed-through noise, Latch Enable Bar (LE) should be left high until all bits are clocked in. Using HVCMOS technology, these switches combine high voltage bilateral DMOS switches and low power CMOS logic to provide efficient control of high voltage analog signals. These ICs are suitable for various combinations of high voltage supplies, e.g., VPP/VNN : +50V/–150V, or +100V/–100V.B Applications Medical ultrasound imaging Piezoelectric transducer drivers Block Diagram DIN LATCHES D LE CL LEVEL SHIFTERS OUTPUT SWITCHES SW0 D LE CL CLK D LE CL SW1 SW2 8-Bit Shift Register D LE CL SW3 D LE CL SW4 D...