MAX4802CXZ+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4802CXZ+ 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 supports wide high-voltage supply ranges, including VPP/VNN configurations of +100V/-100V, +185V/-15V, and +40V/-160V, with a digital logic supply (VDD) ranging from +2.7V to +13.2V. Key electrical parameters include a maximum on-resistance of 38Ω at 5mA current, off-isolation of -77dB at 5MHz, and charge injection of 820pC. The MAX4802 variant uniquely integrates 35kΩ bleed resistors on each switch terminal to discharge capacitive loads. It operates within a commercial temperature range of 0°C to +70°C and is available in the 72-CSBGA package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Pin-compatible drop-in replacement for Supertex HV232
• Integrated 35kΩ bleed resistors for capacitive load discharge
• Flexible high-voltage supplies up to 200V differential
• Low-charge injection and low-capacitance switching

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 indicated by the '+' suffix. Ensure the specific CSBGA package variant matches design requirements. Check for obsolescence notices as this product line may have limited availability. Validate that the integrated bleed resistors are necessary for the target application circuit.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4802 over the MAX4800 only if integrated bleed resistors are required to discharge piezoelectric transducers or similar capacitive loads. Verify that the digital interface voltage tolerance of +13.2V aligns with the controller logic levels. Ensure the high-voltage supply rails fall within the specified operational limits of VPP and VNN. Consider the 72-CSBGA package dimensions for PCB layout constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4802 belongs to the MAX4800/MAX4801/MAX4802 family of low-charge injection, 8-channel, high-voltage analog switches. While the MAX4800 replaces the Supertex HV20220 and the MAX4801 replaces the HV20320, the MAX4802 specifically serves as the pin-compatible replacement for the Supertex HV232. All devices share the same core architecture but differ in the presence of internal bleed resistors.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4802 is a direct pin-compatible replacement for the Supertex HV232. Designers should verify that the new device's electrical characteristics, particularly on-resistance and leakage currents, meet the original system specifications.