MAX4800CQI+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4800CQI+ is an eight-channel high-voltage analog switch manufactured by Analog Devices Inc./Maxim Integrated. It utilizes BCDMOS technology to provide low-charge-injection SPST switches controlled via a serial interface. The device operates with high-voltage supplies ranging from VPP = +40V to VNN + 200V and VNN = -160V to -15V, while the digital interface accepts VDD from +2.7V to +13.2V. Key electrical parameters include a typical on-resistance of 22Ω at +25°C (max 38Ω), off-isolation of -77dB at 5MHz, and charge injection of 820pC. It features a power-on reset function ensuring all switches open upon startup.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Pin-compatible drop-in replacement for Supertex HV20220
• Serial control interface with internal 8-bit shift register and latch
• Power-on reset ensures switches are open during initialization

Analog Switches, Multiplexers, Demultiplexers Applications

• Ultrasound imaging systems
• Printer applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and package integrity upon receipt. Check datasheet revisions for any updates to electrical characteristics or pin configurations before final integration into design specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a direct replacement for the Supertex HV20220 is required in 28-pin PLCC packaging. Ensure the application supports the specific high-voltage supply ranges and serial control logic levels defined in the datasheet. Verify thermal dissipation requirements for the PLCC package under maximum operating conditions.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4800/MAX4801/MAX4802 family of low-charge injection, 8-channel, high-voltage analog switches. The MAX4800 variant specifically serves as a pin-compatible alternative to the Supertex HV20220. Other family members include the MAX4801 (replacing HV20320) and MAX4802 (replacing HV232 with integrated bleed resistors).

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4800CQI+ is explicitly documented as a drop-in replacement for the Supertex HV20220PJ. Designers should verify that the legacy component's performance envelope aligns with the MAX4800 specifications regarding voltage ratings and switching speeds.