DS1845E-010

Digital Potentiometers Overview

The DS1845E-010 is a dual non-volatile digital potentiometer IC featuring one 10kΩ, 100-position linear taper potentiometer and one 10kΩ, 256-position linear taper potentiometer. It integrates 256 bytes of EEPROM memory for data storage and wiper position retention. The device operates on a 2-wire I2C compatible serial interface with hardware write protection via the WP pin. Supply voltage ranges from 2.7V to 5.5V, supporting both 3V and 5V logic levels. It is housed in a 14-pin TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual linear taper potentiometers: Pot 0 (10kΩ, 100 positions) and Pot 1 (10kΩ, 256 positions)
• 256-byte EEPROM memory with nonvolatile wiper storage at addresses F8h and F9h
• I2C compatible 2-wire serial interface with up to eight devices addressable on a single bus
• Hardware write protection via external WP pin to secure memory and wiper settings

Digital Potentiometers Applications

• Bias voltage and current setting in control applications
• System configuration and calibration data storage
• Multi-device bus systems requiring addressable digital resistance adjustment

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix for packaging requirements. The base part number DS1845E-010 corresponds to the 14-pin TSSOP package. Suffixes such as /T&R indicate tape and reel packaging, while '+' denotes lead-free compliance. Confirm availability status as distribution may vary by region and manufacturing lifecycle stage.

Digital Potentiometers Selection Notes

Select this component when two independent digital potentiometers with different resolution requirements are needed in a single package. Potentiometer 0 offers 100 steps suitable for coarse adjustments, while Potentiometer 1 provides 256 steps for finer control. Ensure the application requires nonvolatile storage of wiper positions and utilizes an I2C-compatible master controller.

Digital Potentiometers Part Context

The DS1845E-010 belongs to the DS1845 family of dual nonvolatile digital potentiometers. Other variants in the series include DS1845E-050 (10kΩ/50kΩ) and DS1845E-100 (10kΩ/100kΩ). These devices share the same pinout, interface protocol, and memory architecture, differing only in the end-to-end resistance values of the second potentiometer.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same package and interface include DS1845E-050 and DS1845E-100, provided the resistance values of the second channel meet circuit requirements. Cross-package substitutes like the Flip Chip or CSBGA versions require mechanical redesign.