HV2722/R4X

Analog Switches, Multiplexers, Demultiplexers Overview

The HV2722/R4X is a 300V, low-charge injection, 16-channel high-voltage analog switch manufactured by Microchip Technology. It operates with a logic supply voltage (VDD) of 3V to 5.5V and supports differential supply voltages (VPP-VNN) up to 300V. The device features a serial data shift register with latches for simultaneous state updates. It includes integrated bleed resistors on the SWxA side only, distinguishing it from the HV2721 which has them on both sides. The package is a 64-lead Very Thin Plastic Quad Flat, No Lead (QFN) measuring 9x9x0.9 mm.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrated bleed resistors on one side of the switches to eliminate voltage build-up on capacitive loads
• Cascadable serial data register with latches allowing simultaneous switching of all channels
• Low quiescent current consumption of 10 µA
• Excellent noise immunity with typical off isolation of -60 dB at 5.0 MHz

Analog Switches, Multiplexers, Demultiplexers Applications

• Medical Ultrasound Imaging
• Nondestructive Testing (NDT) Metal Flaw Detection
• Multi-Layer Printed Circuit Board (PCB) Tester
• Piezoelectric Transducer Drivers
• Inkjet Printer Head

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and environmental compliance. Ensure that the R4X designation corresponds to the 64-lead QFN package as specified in the datasheet. Confirm availability through authorized distribution channels and check for any recent product change notifications or lifecycle status updates prior to finalizing procurement plans.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the HV2722 when bleed resistor functionality is required on only one terminal of the analog switch path. This component is suitable for applications needing high-voltage signal multiplexing controlled by low-voltage CMOS logic. Consider the 33 MHz clock frequency limit and the specific power supply sequencing requirements during system design to ensure reliable operation within the recommended operating conditions.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the HV2621/HV2721/HV2722 family of high-voltage analog switches. While functionally similar to the HV2621 and HV2721, the HV2722 is uniquely characterized by having integrated bleed resistors located exclusively on the SWxA side of the switches. This configuration differentiates it from the HV2721, which provides bleed resistors on both sides, and the HV2621, which lacks them entirely.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

HV2721/R4X: Offers identical switching performance but includes bleed resistors on both SWxA and SWxB terminals instead of just SWxA.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the HV2722 differ from the HV2721 regarding bleed resistors?

The HV2722 has integrated bleed resistors on the SWxA side only, whereas the HV2721 has integrated bleed resistors on both the SWxA and SWxB sides of the switches.

What is the maximum clock frequency for the serial interface?

The data shift clock frequency can reach up to 33 MHz when the logic supply voltage (VDD) is 5.0V.

Can multiple HV2722 devices be connected together?

Yes, multiple devices can be daisy-chained using the Data Out (DOUT) pin of one device connected to the Data In (DIN) pin of the next, allowing simultaneous control via a single latch enable pulse.