MCP4262-503E/UN

Digital Potentiometers Overview

The MCP4262-503E/UN is a dual-channel digital potentiometer IC featuring non-volatile memory and an SPI serial interface. It provides two independent rheostat networks, each with 8-bit resolution (256 taps) and a nominal resistance of 50 kΩ. The device operates within a supply voltage range of 1.8V to 5.5V and supports high-voltage tolerant digital inputs up to 12.5V. Key specifications include a typical wiper resistance of 75 Ω, a bandwidth of 200 kHz for the 50 kΩ variant, and an extended operating temperature range from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 8-bit Rheostat Configuration: Two independent resistor networks with 256 adjustable steps and 50 kΩ nominal resistance.
• Non-Volatile Memory: Includes WiperLock™ technology to automatically recall saved wiper settings upon power-up.
• High-Speed SPI Interface: Supports data rates up to 10 MHz in modes 0,0 and 1,1 with hardware or software write protection.
• Wide Operating Range: Functions with VDD from 1.8V to 5.5V and tolerates digital input voltages up to 12.5V.

Digital Potentiometers Applications

• Industrial process control systems requiring remote gain adjustment
• Audio equipment for digital volume and tone control
• Test and measurement instruments needing programmable attenuation
• Power supply biasing circuits with calibration retention

Digital Potentiometers Procurement Notes

Verify the package suffix 'UN' corresponds to the MSOP-10 surface-mount package when sourcing. Confirm that the '-503' code indicates the 50 kΩ resistance value. Ensure the application design accounts for the 1.8V minimum supply voltage if operating below 2.7V, as analog characteristics are specified differently across the full range.

Digital Potentiometers Selection Notes

Select this component over volatile variants (e.g., MCP4252) when power-down state retention is required. Choose the rheostat configuration (MCP4262) over the potentiometer version (MCP4261) if only two terminals per channel are utilized. Verify that the system's SPI clock frequency does not exceed 10 MHz for standard operation or 1 MHz if VDD is between 1.8V and 2.7V.

Digital Potentiometers Part Context

This part belongs to the MCP41XX/416X/424X/426X family of single and dual digital potentiometers. It shares the same core architecture and command set as other members like the MCP4261 and MCP4242, differing primarily in the number of channels, resolution, and memory type. The 'E' suffix denotes RoHS compliance and lead-free construction.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include the MCP4261-503E/UN (potentiometer mode) or the MCP4242-503E/UN (volatile memory). Cross-family replacements require verification of SPI compatibility and physical package dimensions.