Maxim Integrated DS1858E-050 - Dual Temperature-Controlled NV Variable Resistors

The DS1858E-050 from Maxim Integrated is a sophisticated dual temperature-controlled nonvolatile (NV) variable resistor device designed to offer precise resistance adjustments based on temperature changes, making it an ideal solution for advanced thermal compensation applications. This integrated circuit (IC) features two resistors that can be individually programmed with a standard I²C-compatible serial interface.

Key Features:

• Variable Resistance: The device includes two 256-position linear taper variable resistors, with resistance values ranging from 10 kΩ to 200 kΩ, providing a wide range of adjustment possibilities.
• Nonvolatile Memory: Each resistor's wiper position is stored in EEPROM, ensuring that settings are maintained even after power is removed.
• Temperature Monitoring: An integrated temperature sensor allows for real-time monitoring, enabling automatic resistance adjustments to compensate for temperature variations.
• Programmable Temperature Coefficients: Users can program temperature coefficients for each resistor to define the rate of resistance change per degree Celsius, ensuring precise control over thermal response.
• High Precision: The DS1858E-050 offers excellent resistance tolerance and temperature coefficient accuracy, ensuring reliable performance in critical applications.
• I²C Interface: The device can be easily configured and monitored through a standard I²C serial interface, facilitating integration into digital systems.

Applications:

The DS1858E-050 is suitable for a variety of applications that require precise resistance adjustments based on temperature changes, including:

• Optical networking systems such as Wavelength Division Multiplexing (WDM) and Reconfigurable Optical Add-Drop Multiplexer (ROADM).
• RF amplifiers and transmitters where temperature compensation is critical for maintaining signal integrity.
• Industrial and automotive systems requiring robust thermal management.
• Precision instrumentation and calibration equipment.

Maxim Integrated's DS1858E-050 offers a high level of integration, performance, and reliability for designers looking to implement sophisticated temperature-compensated resistance controls in their systems.