MAX4578CAP+

Analog Switches - Special Purpose Overview

The MAX4578CAP+ is a high-voltage, single 8-to-1 CMOS calibration multiplexer manufactured by Analog Devices. It operates from a single +4.5V to +36V supply or dual supplies of ±4.5V to ±20V within the commercial temperature range of 0°C to +70°C. The device features an on-resistance (RDS(ON)) maximum of 350Ω with channel matching of 12Ω max. Key electrical parameters include a typical off-leakage current of 20pA at +25°C and charge injection of 10pC max. Internal resistor dividers provide accurate voltage ratios: 4081/4096 and 15/4096 for gain and offset calibration (15-bit accuracy), and 1/2(V+) and 5/8(V+ - V-) for self-monitoring (8-bit accuracy).

Analog Switches - Special Purpose Feature Summary

• Integrated precision resistor-divider networks generate calibrated voltage ratios for ADC system self-monitoring.
• Rail-to-Rail analog signal handling capability across the full supply voltage range.
• Address latching functionality ensures stable state retention during operation.

Analog Switches - Special Purpose Applications

• Precision ADC calibration systems
• System self-monitoring applications
• Data-acquisition systems

Analog Switches - Special Purpose Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the specific package and temperature grade requirements for your design. Ensure compliance with RoHS directives if applicable to your manufacturing standards.

Analog Switches - Special Purpose Selection Notes

Select this component when high-voltage operation and internal calibration references are required. Compare the 350Ω on-resistance against system signal integrity needs. Verify that the 8-channel configuration fits the input count. Consider the SSOP package constraints for PCB layout.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4578/MAX4579 family of high-voltage cal-multiplexers. The MAX4578 variant provides a single 8-to-1 configuration, whereas the MAX4579 offers a dual 4-to-1 setup. Both share identical internal divider architectures and logic interfaces.

Analog Switches - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components.