MCP40D17T-503E/LTY

Overview

The MCP40D17T-503E/LTY is a single-channel, 7-bit volatile digital potentiometer manufactured by Microchip Technology. It features an I2C serial interface with command code support and operates within a supply voltage range of 1.8V to 5.5V. The device offers a nominal resistance (RAB) of 50 kΩ with a tolerance of ±20%, providing 128 discrete wiper taps. Key electrical characteristics include a typical wiper resistance of 100 Ω, a bandwidth of 260 kHz at the specified resistance, and low static current consumption of 2.5 µA. It supports SMBus 2.0 protocols and includes power-on reset protection.

Feature Summary

• 7-bit resolution with 128 steps for precise resistance adjustment
• I2C/SMBus 2.0 compatible serial interface with standard address '0101110'
• Wide operating voltage range from 1.8V to 5.5V
• Extended temperature range operation from -40°C to +125°C

Applications

• Amplifier gain control and offset adjustment
• Sensor calibration for pressure, temperature, and optical sensors
• Set point or offset trimming in electronic circuits
• Replacement for mechanical trim potentiometers in cost-sensitive designs

Procurement Notes

Verify the specific ordering suffix 'LTY' against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required I2C bus speed (Standard or Fast Mode) and voltage levels for the target application environment.

Selection Notes

Select this component when a single-channel digital potentiometer with I2C control is required. The 50 kΩ resistance value suits applications needing moderate impedance levels. Consider the volatile memory nature, which requires setting the wiper position upon power-up if state retention is critical.

Part Context

This part belongs to the MCP40D17/18/19 family of digital potentiometers. The 'MCP40D17' designation indicates a rheostat configuration, while the '503' suffix specifies the 50 kΩ resistance value. The 'LTY' suffix typically denotes the SC70-6 package with tape and reel packaging.

Replacement Considerations

The MCP4017T-503E/LTY is a parameter-equivalent alternative within the same product family, offering identical electrical specifications and pinout compatibility.