HV2621 Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip HV2621 is a 300 V, low-charge-injection, 16-channel high-voltage analog switch designed for precision multiplexing in ultrasound transducer and medical imaging systems. It integrates 16 independent bidirectional switches in a compact QFN package with logic-level control inputs compatible with 3.3 V and 5 V systems.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 65
- Lifecycle
- ACTIVE
- Datasheet
- HV2621 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 300 V high-voltage analog switch with 16 independent bidirectional channels for multiplexing high-voltage transducer signals in ultrasound and industrial systems
- Low charge injection minimizes signal disturbance when switching, preserving waveform integrity in precision 16-channel analog multiplexer applications
- QFN package with logic-level compatible control inputs (3.3 V / 5 V) enabling direct interfacing with microcontrollers without additional level shifters
Applications
The HV2621 is primarily used in medical ultrasound transducer arrays and high-voltage signal multiplexers where 16 channels must switch signals up to 300 V with minimal charge injection disturbance. It also finds application in industrial non-destructive testing (NDT) equipment, high-voltage instrumentation switches, and capacitive sensor multiplexing where low leakage and fast switching across 16 inputs are critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Frequently Asked Questions
How does the HV2621 handle 300 V signals while operating from a low-voltage logic control bus?
The HV2621 supports analog signals up to 300 V on its switch channels while accepting standard 3.3 V or 5 V logic-level control inputs to select among 16 channels. This dual-voltage architecture eliminates the need for high-voltage gate drivers, simplifying system design in ultrasound front-end circuits and high-voltage industrial multiplexers.
Why is low charge injection important in the HV2621 for ultrasound transducer multiplexing?
In ultrasound transducer arrays, charge injection from switching events can corrupt received echo signals, leading to imaging artifacts. HV2621's low-charge-injection design minimizes this glitch, ensuring that switching among 16 transducer channels at up to 300 V does not introduce spurious signals that would reduce image quality or dynamic range.
What package does the HV2621 come in and how does it fit into a compact transducer front-end PCB?
The HV2621 is housed in a Quad Flat No-Lead (QFN) package, which provides a small PCB footprint with exposed thermal pad for heat dissipation. This compact package allows 16-channel high-voltage switching at 300 V to be placed close to ultrasound transducer connectors, reducing parasitic inductance on signal paths and saving board area compared to larger SOIC or DIP alternatives.
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