MAX4579CPP+

Analog Switches - Special Purpose Overview

The MAX4579CPP+ is a high-voltage, dual 4-to-1 CMOS calibration multiplexer manufactured by Analog Devices. It operates from single +4.5V to +36V or dual ±4.5V to ±20V supplies. The device features on-chip precision resistor-dividers generating accurate voltage ratios of 15/4096 and 4081/4096 (15-bit accuracy) and 1/2(V+) and 5/8(V+ - V-) (8-bit accuracy). Key electrical parameters include a maximum on-resistance of 350Ω with 12Ω matching between channels, 20pA off-leakage current at +25°C, and 10pC charge injection. It utilizes address latching and provides >2kV ESD protection.

Analog Switches - Special Purpose Feature Summary

• On-chip gain and offset divider networks provide 15-bit accurate output ratios for ADC calibration.
• Internal V+ to GND and V+ to V- divider networks deliver 8-bit accurate ratios for system self-monitoring.
• Rail-to-rail analog signal handling capability across the full supply range.

Analog Switches - Special Purpose Applications

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

Analog Switches - Special Purpose Procurement Notes

Verify the component status as End-of-Life (EOL) through official manufacturer channels before design finalization. Confirm that the CPP suffix corresponds to the 20-pin Plastic DIP package and the C temperature grade (0°C to +70°C). Ensure all logic inputs are properly terminated during power-up to prevent unintended latch strobing.

Analog Switches - Special Purpose Selection Notes

Select this component when high-voltage operation and integrated calibration references are required. The MAX4579 offers a dual 4-channel configuration suitable for stereo or differential signal routing. Verify that the 350Ω on-resistance meets the application's signal integrity requirements compared to lower-resistance alternatives.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4578/MAX4579 family of high-voltage cal-multiplexers. The MAX4579 specifically provides two independent 4-to-1 multiplexers, whereas the MAX4578 provides a single 8-to-1 multiplexer. Both share identical internal calibration divider architectures and electrical characteristics.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.