Microchip Technology HV2809
The HV2809 is a 32-channel, low harmonic distortion, high-voltage analog switch integrated circuit designed for medical ultrasound imaging systems as a probe selection relay replacement. It serves as a 16 PDT (16-pole double-throw) high-voltage analog switch array. The enable function allows the parts to be configured as either a 2:1 or 4:1 multiplexer/demultiplexer.FEATURES
● 32-channel High-voltage Analog Switch● 2:1 Multiplexer/Demultiplexer
● Enable Control for All-OFF State
● 3.3V or 5V CMOS Input Logic Level
● Extremely Low –10 µA Quiescent Power Dissipation
● Low Parasitic Capacitance
● DC to 50 MHz Analog Signal Frequency
● –60 dB Typical Off-isolation at 5 MHz
● CMOS Logic Circuitry for Low Power
● Excellent Noise Immunity
● Flexible Operating Supply Voltages
APPLICATIONS
● Electromechanical Relay Replacement in Medical Ultrasound ProbesGENERAL DESCRIPTION
The HV2809 is a very fast transducer multiplexer that consumes minimal power and emits no audible noise. This device combines high-voltage bilateral DMOS switches and low-power CMOS logic to provide efficient control of high-voltage analog signals. The HV2809 is suitable for various combinations of high-voltage supplies, such as VPP/VNN: +40V/–160V, +100V/–100V, and +160V/–40V. Moreover, the HV2809 comes in an 8 mm x 8 mm x 1 mm 56-lead VQFN package. Compared to an electromechanical relay, it does not only save considerable PCB area but also PCB-assembled height.