DS1859E-015+T&R

Digital Potentiometers Overview

The DS1859E-015+T&R is a dual, temperature-controlled nonvolatile variable resistor with integrated monitors. It contains two 50kΩ linear resistors with 256 positions and three external analog monitor inputs (MON1, MON2, MON3). An internal direct-to-digital temperature sensor provides monitoring for five channels: temperature, VCC, and the three external inputs. The device operates on a 2-wire serial interface with supply voltages from 2.85V to 5.5V. Resistor settings are stored in EEPROM and can be adjusted every 2°C across an operating range of -40°C to +95°C.

Digital Potentiometers Feature Summary

• Dual 50kΩ, 256-position linear variable resistors with nonvolatile storage
• Five monitored channels including internal temperature sensor and three external analog inputs
• Configurable alarm and warning flags for all monitored signals
• 2-Wire serial interface supporting standard and fast modes

Digital Potentiometers Applications

• Optical transceivers
• Optical transponders
• Instrumentation and industrial controls
• RF power amplifiers
• Diagnostic monitoring systems

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E' against official documentation to confirm manufacturing or revision details. Confirm package availability as datasheet references CSBGA and TSSOP options. Ensure environmental compliance data matches project requirements.

Digital Potentiometers Selection Notes

Select this component when dual temperature-compensated resistance control and multi-channel monitoring are required. Verify that the 50kΩ resistance value fits the circuit design. Check if the 2-wire interface speed meets system timing constraints.

Digital Potentiometers Part Context

This part belongs to the DS1859 family of digital potentiometers with monitoring capabilities. It is designed for applications requiring precise bias voltage and current setting with temperature compensation. The device integrates EEPROM for persistent storage of resistor tap positions.

Digital Potentiometers Replacement Considerations

Check for DS1859B-050 variants which share similar electrical characteristics but may differ in package type. Verify pin compatibility and memory map alignment before substitution.