HV2809K6-G-M937

Analog Switches - Special Purpose Overview

The HV2809K6-G-M937 is a low harmonic distortion, 32-channel high voltage analog switch IC designed for medical ultrasound imaging systems. It functions as a 16-pole double-throw (PDT) switch array and supports 2:1 or 4:1 multiplexer/demultiplexer configurations via its enable control. Utilizing HVCMOS technology, the device operates with flexible supply voltages such as VPP/VNN of +40V/-160V, +100V/-100V, or +160V/-40V. The logic interface accepts 3.3V or 5.0V CMOS inputs. Key electrical parameters include a maximum ON-resistance of 38Ω at +40V/-160V, a bandwidth up to 50MHz, and typical OFF-isolation of -60dB at 5.0MHz. It is housed in a 56-lead 8x8mm QFN package.

Analog Switches - Special Purpose Feature Summary

• Replaces electromechanical relays in medical ultrasound probes by providing silent operation and reduced PCB area.
• Integrates 32 bilateral DMOS switches controlled by low-power CMOS logic circuitry.
• Features an enable function that allows all switches to be configured into an all-OFF state.
• Offers excellent noise immunity and very low quiescent power dissipation.

Analog Switches - Special Purpose Applications

• Electromechanical relay replacement in medical ultrasound probes
• Transducer multiplexing in ultrasound imaging systems

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix M937 against official Microchip documentation to confirm reel packing specifications. Ensure compatibility with RoHS3 standards and check moisture sensitivity levels prior to assembly. Confirm that the thermal pad connection requirements align with the target PCB design layout.

Analog Switches - Special Purpose Selection Notes

Select this component when designing high-voltage analog switching arrays for ultrasound applications requiring low harmonic distortion. Verify that the operating supply voltage range (+40V to +200V and -40V to -160V) matches the system architecture. Ensure the 56-lead QFN footprint fits within the mechanical constraints of the probe housing.

Analog Switches - Special Purpose Part Context

This part belongs to the HV2809 family of high-voltage analog switches manufactured originally by Supertex Inc., now under Microchip Technology. The K6 suffix denotes the 56-lead 8x8mm QFN package option. The M937 suffix typically indicates tape and reel packaging for automated surface-mount assembly.

Analog Switches - Special Purpose Replacement Considerations

HV2808K6-G is a related variant in the same family offering similar channel counts but potentially different resistance characteristics.

Analog Switches - Special Purpose FAQ

What is the maximum differential supply voltage allowed?

The absolute maximum differential supply voltage (VPP-VNN) is 220V.

How does the Enable pin affect the switch configuration?

When the Enable pin is Low, all switches are turned OFF regardless of the A/B input state. When High, the A/B input selects between the two switch states.

What is the recommended power-up sequence?

GND must be powered up first and powered down last. The rise and fall times of VDD, VPP, and VNN should not be less than 1.0 msec.