MCP4017T-103E/LTY

Overview

The MCP4017T-103E/LTY is a single-channel digital potentiometer featuring 7-bit resolution with 128 discrete taps. It utilizes an I²C serial interface for control and employs volatile RAM to store wiper settings, which reset to mid-scale (3Fh) upon power-up or brown-out events. The device supports a wide operating voltage range of 1.8V to 5.5V and offers resistance values including 10 kΩ (indicated by the -103 suffix). Key electrical characteristics include a typical wiper resistance of 100 Ω, low temperature coefficients, and extended industrial temperature operation from -40°C to +125°C.

Feature Summary

• 7-bit resolution providing 128 adjustable tap positions via I²C interface
• Volatile memory architecture with Power-on Reset (POR) and Brown-out Reset (BOR) protection
• Wide supply voltage compatibility ranging from 1.8V to 5.5V
• Extended temperature range specification from -40°C to +125°C

Applications

• Programmable gain amplifier biasing
• Voltage reference adjustment
• Audio volume control circuits
• Sensor calibration and offset trimming

Procurement Notes

Verify the specific resistance value associated with the '103' suffix (10 kΩ) against design requirements. Confirm that the volatile memory type aligns with system power management strategies, as settings are lost during power cycles. Ensure the SC70-6 package dimensions fit the PCB footprint constraints.

Selection Notes

Select this component when a single-channel rheostat configuration with I²C control is required. Compare against the MCP4018 if a true potentiometer configuration with three external terminals is needed. Consider the MCP40D17 series if non-volatile EEPROM storage is necessary to retain settings without power.

Part Context

This part belongs to the MCP4017/18/19 family of digital potentiometers manufactured by Microchip Technology. The MCP4017 variant specifically provides a rheostat configuration within a compact SC70-6 package. It shares core architectural features with the MCP4018 and MCP4019 but differs in terminal availability and pinout configuration.

Replacement Considerations

MCP40D17T-103E/LTY: Offers identical electrical specifications and pinout but includes non-volatile EEPROM memory instead of volatile RAM.