MCP41010-E/P

Overview

The MCP41010-E/P is a single-channel digital potentiometer manufactured by Microchip Technology. It features a nominal resistance of 10 kΩ with 256 discrete tap positions controlled via an SPI serial interface. The device operates on a single supply voltage ranging from 2.7V to 5.5V and consumes a maximum static current of 1 µA. It utilizes low-power CMOS technology and includes a software shutdown feature to disconnect the A terminal and connect the wiper to the B terminal for power savings. Upon power-up, the wiper resets to the mid-scale position (80h).

Feature Summary

• Single-channel digital potentiometer with 10 kΩ nominal resistance and 256 linear taps.
• SPI serial interface supporting modes 0,0 and 1,1 with a maximum clock frequency of 10 MHz.
• Low power consumption with 1 µA maximum static supply current.
• Software shutdown mode disconnects resistor terminals to minimize power usage.

Applications

• Replacing mechanical potentiometers in embedded systems for programmable resistance adjustment.
• Voltage divider circuits requiring digital control over gain or attenuation.
• Audio volume control applications utilizing digital signal processing interfaces.

Procurement Notes

Verify the package type corresponds to PDIP-8 as indicated by the '/P' suffix. Confirm the resistance value is 10 kΩ, distinct from the 50 kΩ (MCP41050) or 100 kΩ (MCP41100) variants within the same family. Ensure the operating temperature range meets the specific application requirements, typically -40°C to +85°C for industrial grade.

Selection Notes

Select this component when a single-channel, non-volatile memory-free digital potentiometer is required. The 10 kΩ resistance value is suitable for moderate impedance circuits. Verify that the host microcontroller supports the SPI protocol with compatible voltage levels between 2.7V and 5.5V. Consider the 8-bit resolution (256 steps) sufficient for the required precision.

Part Context

This part belongs to the MCP41XXX/42XXX family of digital potentiometers. The MCP41XXX series denotes single-channel devices, while MCP42XXX denotes dual-channel versions. The 'E' in the part number typically indicates an extended temperature range capability (-40°C to +125°C), though standard industrial ranges are also specified. The '/P' suffix specifies the 8-pin PDIP package.

Replacement Considerations

Direct replacements include other MCP41010 variants with different packaging such as SOIC-8 (MCP41010-I/SN). For dual-channel requirements, the MCP42010 offers identical electrical characteristics but with two independent potentiometers in a 14-pin package. Ensure pin compatibility when substituting across package types.