MAX4578CWP+

Analog Switches - Special Purpose Overview

The MAX4578CWP+ is a high-voltage, single 8-to-1 CMOS calibration multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +4.5V to +36V supply or dual supplies of ±4.5V to ±20V. The device features on-chip resistor-divider networks providing 15-bit accurate gain and offset ratios (4081/4096 and 15/4096) and 8-bit accurate V+/GND and (V+-V-) ratios. 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 TTL/CMOS-compatible logic thresholds.

Analog Switches - Special Purpose Feature Summary

• On-chip precision resistor-divider networks generate accurate voltage ratios for ADC calibration and system self-monitoring without external components.
• Rail-to-Rail analog signal handling capability allows the switches to process signals spanning the full supply range.
• Integrated address latching and enable inputs simplify digital control and state retention in data-acquisition systems.

Analog Switches - Special Purpose Applications

• Precision ADC calibration and system self-monitoring
• Data-acquisition systems requiring high-voltage input switching
• Test equipment and avionics signal routing

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix CWP+ against the manufacturer's latest documentation to confirm package type and temperature range. Confirm RoHS compliance status as indicated in the ordering information. Check for obsolescence notices or lifecycle changes directly from Analog Devices before finalizing procurement plans.

Analog Switches - Special Purpose Selection Notes

Select this component when high-voltage analog switching combined with internal calibration references is required. Ensure the supply voltage range matches the application's single or bipolar requirements. Verify that the 350Ω on-resistance and 20pA leakage specifications meet the precision requirements of the target signal path.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4578/MAX4579 family of high-voltage cal-multiplexers. The MAX4578 provides an 8-channel configuration, while the MAX4579 offers a dual 4-channel layout. Both share identical calibration divider architectures and electrical characteristics, differing primarily in channel count and pinout arrangement within the 20-pin package options.

Analog Switches - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support for direct replacements or cross-reference guides if this component is unavailable.