DS1845E-010+

Digital Potentiometers Overview

The DS1845E-010+ is a dual non-volatile digital potentiometer IC in a 14-pin TSSOP package. It integrates one 10kΩ, 100-position linear taper potentiometer and one 10kΩ, 256-position linear taper potentiometer. The device includes 256 bytes of EEPROM memory for storing configuration data or wiper settings. It communicates via an I²C compatible 2-wire serial interface (SDA/SCL) with hardware write protection capability. Operating from a supply voltage range of 2.7V to 5.5V, it supports industrial temperatures from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual linear taper potentiometers: Pot 0 has 100 positions (10kΩ), Pot 1 has 256 positions (10kΩ).
• Integrated 256-byte EEPROM for non-volatile storage of user data and wiper positions.
• I²C compatible 2-wire serial interface allows addressing up to eight devices on a single bus.
• Hardware write protect pin (WP) secures memory and potentiometer settings against alteration.

Digital Potentiometers Applications

• Bias voltage and current setting in control applications.
• System calibration data storage and retrieval.
• Multi-device configurations requiring addressable digital resistance adjustment.

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix (+T&R vs standard) to confirm tape-and-reel packaging if required for automated assembly. Confirm lead-free status indicated by the '+' suffix. Check manufacturer documentation for end-of-life notices as this component series may have discontinuation updates.

Digital Potentiometers Selection Notes

Select the DS1845E-010+ when two distinct potentiometer resolutions are needed: 100 steps for coarse adjustment and 256 steps for fine tuning. Ensure the system operates within the 2.7V to 5.5V supply range. Verify that the I²C bus speed requirements (Standard or Fast mode) are compatible with the master controller.

Digital Potentiometers Part Context

This part belongs to the DS1845 family of dual non-volatile potentiometers. The 'E' suffix denotes the 14-pin TSSOP package option. The '010' designation specifies the resistance values (10kΩ/10kΩ). Other variants include different resistance values (e.g., 050, 100) or packages (Flip Chip, CSBGA).

Digital Potentiometers Replacement Considerations

Direct replacements must match the dual pot configuration (100 pos / 256 pos) and I²C interface. Consider the DS1845E-010 (non-LF) or other package variants like DS1845X-010 if form factor changes are acceptable. Verify pinout compatibility for direct substitution.