DS1848B-050+

Digital Potentiometers Overview

The DS1848B-050+ is a dual temperature-controlled nonvolatile variable resistor and memory IC manufactured by Analog Devices Inc./Maxim Integrated. It integrates one 50kΩ and one 10kΩ linear taper, digitally controlled variable resistor, each with 256 positions. The device incorporates a direct-to-digital temperature sensor and utilizes a 2-wire serial interface for control. Resistor settings are determined by a temperature-addressed look-up table that assigns unique values for every 2°C increment across the -40°C to +95°C operating range. It operates from 3V or 5V supplies and includes 128 bytes of user EEPROM.

Digital Potentiometers Feature Summary

• Dual variable resistors: one 50kΩ and one 10kΩ, each with 256 positions
• Temperature-controlled operation via look-up tables updated every 2°C
• Integrated 13-bit digital temperature sensor (-40°C to +95°C)
• 128 bytes of user EEPROM and nonvolatile storage for resistor settings

Digital Potentiometers Applications

• Setting and temperature-compensating bias voltages in control applications
• Adjusting bias currents requiring temperature compensation
• Systems utilizing 2-wire serial bus interfaces for component configuration

Digital Potentiometers Procurement Notes

Verify package type availability; the datasheet lists both TSSOP and CSBGA options. Confirm RoHS compliance status as indicated by the '+' suffix in ordering information. Check for specific tape and reel packaging requirements if applicable to the manufacturing process.

Digital Potentiometers Selection Notes

Select the DS1848B-050+ when a mixed resistance configuration (50kΩ and 10kΩ) is required. Ensure the application supports the 2-wire serial protocol. Verify that the operating temperature range aligns with the specified -40°C to +95°C limits and that programming conditions remain within 0°C to +70°C.

Digital Potentiometers Part Context

This component belongs to the DS1848 family of dual temperature-controlled nonvolatile variable resistors. The 'B' designation indicates the 16-ball CSBGA package variant, while the '050' suffix specifies the mixed 50kΩ/10kΩ resistor configuration. It serves as a programmable alternative to traditional analog potentiometers in temperature-sensitive circuits.

Digital Potentiometers Replacement Considerations

The DS1848E-050 offers identical electrical specifications but uses a 14-pin TSSOP package instead of the CSBGA format. Other variants like the DS1848-010 provide two 10kΩ resistors rather than the mixed configuration.