Microchip Technology HV2901
The HV2901 has integrated bleed resistors to eliminate voltage built up on capacitive loads such as piezoelectric transducers. These devices combine high-voltage bilateral DMOS switches and low-power CMOS logic to provide efficient control of high-voltage analog signals. HV2801/HV2901 32-Channel Low-Charge-Injection High-Voltage Analog Switches Features • 32-Channel High-Voltage Analog Switch • Integrated Bleed Resistors on the Outputs for HV2901 • CMOS Logic Circuitry for Low Power • 3.3V or 5V CMOS Input Logic Level • 2:1 Multiplexer/Demultiplexer • 20 MHz Data...FEATURES
● 32-Channel High-Voltage Analog Switch● Integrated Bleed Resistors on the Outputs for HV2901
● CMOS Logic Circuitry for Low Power
● 3.3V or 5V CMOS Input Logic Level
● 2:1 Multiplexer/Demultiplexer
● 20 MHz Data Shift Clock Frequency
● 10 µA Low-Quiescent Power Dissipation
● Low Parasitic Capacitance
● DC to 50 MHz Analog Signal Frequency
● –60 dB Typical Off-Isolation at 5 MHz
● Excellent Noise Immunity
● Cascadable Serial Data Register with Latches
● Flexible Operating Supply Voltages
APPLICATIONS
● Medical Ultrasound Imaging● Non-Destructive Testing Metal Flaw Detection
● Piezoelectric Transducer Drivers
● Inkjet Printer Heads
● Optical MEMS Modules
GENERAL DESCRIPTION
The HV2801 and HV2901 are 32-channel low-charge-injection high-voltage analog switch integrated circuits (ICs) intended for applications requiring high-voltage switching controlled by low-voltage control signals, such as medical ultrasound imaging, piezoelectric transducer drivers and printers. Input data is shifted into a 32-bit Shift register that can then be retained in a 32-bit latch.