MCP4017T-503E/LTY

Overview

The MCP4017T-503E/LTY is a single-channel digital potentiometer featuring 7-bit resolution and volatile RAM memory. It offers a nominal resistance of 50 kΩ with 128 discrete tap positions, configured as a rheostat in the SC70-6 package. The device operates on an I²C interface with a supply voltage range of 1.8V to 5.5V. Key electrical characteristics include a typical wiper resistance of 100 Ω, a bandwidth of 260 kHz at mid-scale, and low static current consumption of 2.5 µA. It supports extended industrial temperature ranges from -40°C to +125°C.

Feature Summary

• 7-bit resolution providing 128 adjustable tap positions for precise resistance control
• I²C serial interface supporting standard (100 kHz) and fast mode (400 kHz) communication
• Volatile RAM storage retains settings only during power; resets to mid-scale upon power-up
• SC70-6 surface-mount package designed for space-constrained PCB layouts

Applications

• Programmable gain amplifiers requiring analog signal adjustment
• Voltage reference trimming and calibration circuits
• Audio volume control and tone adjustment systems
• Sensor biasing and offset nulling applications

Procurement Notes

Verify the specific suffix 'LTY' against the manufacturer's latest documentation to confirm packaging details and tape-and-reel specifications. Ensure the design accounts for the volatile nature of the internal memory, implementing external non-volatile storage if data retention across power cycles is required. Confirm I²C address configuration matches the system bus requirements.

Selection Notes

Select this component when a compact rheostat configuration is needed with I²C control. The 50 kΩ value suits moderate impedance applications. Compare against the MCP4018 if a potentiometer (three-terminal) configuration is preferred instead of a rheostat. Consider the MCP40D17 series if enhanced durability or different environmental qualifications are necessary for the target application.

Part Context

This part belongs to the MCP4017/18/19 family of 7-bit digital potentiometers. The MCP4017 variant specifically provides a rheostat output, distinguishing it from the MCP4018 which offers a potentiometer configuration. Both share identical electrical performance and pinouts but differ in terminal connectivity within the SC70 package.

Replacement Considerations

MCP4017T-503E/LT is a compatible alternative offering identical electrical parameters in a similar SC70 footprint.