MCP4351-103E/ML

Digital Potentiometers Overview

The MCP4351-103E/ML is a quad digital potentiometer IC featuring four independent 8-bit resistor networks with 257 taps. It utilizes an SPI serial interface for high-speed read/write operations to wiper registers. The device operates within a supply voltage range of 1.8V to 5.5V and supports linear taper configurations. Key electrical characteristics include a typical wiper resistance of 75 Ω, a bandwidth of 1 MHz at 10 kΩ, and an extended operating temperature range from -40°C to +125°C. Memory type is volatile RAM.

Digital Potentiometers Feature Summary

• Quad Resistor Network: Four independent potentiometers with 257 taps (8-bit resolution).
• SPI Interface: Supports 10 MHz operation in Modes 0,0 and 1,1 with high-speed read/write capabilities.
• High-Voltage Tolerant Inputs: Digital inputs tolerate up to 12.5V, supporting split-rail applications.
• Terminal Disconnect: Features a Terminal Control (TCON) register to disconnect resistor network terminals.

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise resistance adjustment.
• Voltage reference trimming in precision measurement systems.
• Audio volume control circuits utilizing digital potentiometer configurations.
• Adaptive biasing networks in analog signal processing paths.

Digital Potentiometers Procurement Notes

Verify the specific suffix 'ML' corresponds to the 20-lead QFN package during sourcing. Confirm that the '-103' designation indicates a 10 kΩ nominal resistance value. Ensure the component meets RoHS compliance requirements if applicable to the target assembly process. Check datasheet revision history for any updates regarding thermal or electrical specifications before finalizing procurement.

Digital Potentiometers Selection Notes

Select this model when four independent digital potentiometers are required in a single package. The 10 kΩ resistance value suits moderate impedance applications. Choose the ML package for compact surface-mount designs. Note that memory is volatile; retain settings externally if power loss persistence is needed. Verify SPI clock frequency compatibility with the host controller.

Digital Potentiometers Part Context

This component belongs to the MCP433X/435X family of quad SPI digital potentiometers. The MCP4351 variant specifically offers 8-bit resolution (257 taps), distinguishing it from the 7-bit MCP4331. It shares features with the MCP4352 but differs in configuration options, serving as a potentiometer rather than a rheostat by default.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include MCP4351-102E/ML (5 kΩ) and MCP4351-503E/ML (50 kΩ) for identical functionality with different resistance values. For non-volatile memory requirements, consider the MCP4361 series. Ensure pinout compatibility when replacing with other packages like TSSOP.