X9315UM

Digital Potentiometers Overview

The X9315UM is a single-channel digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features a 50 kΩ end-to-end resistance with a linear taper and 32 discrete tap positions. The device utilizes a nonvolatile memory architecture to retain wiper settings during power-off cycles, recalling the position upon power-up. Control is managed via an up/down serial interface using CS, U/D, and INC inputs. It operates within a supply voltage range of 4.5 V to 5.5 V, drawing a maximum standby current of 200 µA at 5 V. The component is housed in an 8-lead MSOP package and supports surface-mount installation.

Digital Potentiometers Feature Summary

• Nonvolatile memory storage for wiper position retention across power cycles
• 32-tap resolution with 50 kΩ linear resistance taper
• Low power consumption with 200 µA typical operating current at 5 V
• Up/Down serial control interface requiring only three pins (CS, U/D, INC)

Digital Potentiometers Applications

• Digitally controlled resistance trimming in instrumentation
• Parameter adjustment circuits for signal processing systems
• Volume or gain control in audio equipment
• Calibration settings in industrial control modules

Digital Potentiometers Procurement Notes

Verify RoHS compliance status as specific listings indicate non-compliance for this variant. Confirm availability status, as some distributors classify this part as obsolete or limited stock. Ensure the ordering suffix matches the required package type (MSOP) and temperature rating. Check for moisture sensitivity level requirements during PCB assembly handling.

Digital Potentiometers Selection Notes

Select the X9315UM when a single-channel digital potentiometer with nonvolatile storage is required. Ensure the system operates between 4.5 V and 5.5 V, as lower voltage variants like the X9315USZ-2.7T1 are electrically distinct. Verify that the 50 kΩ resistance value fits the circuit design constraints compared to other available values such as 10 kΩ or 100 kΩ. Confirm the MSOP-8 package dimensions fit the board layout.

Digital Potentiometers Part Context

This component belongs to the X9315 series of low-noise, low-power digitally controlled potentiometers. The series offers various resistance values and package options, including SOIC and MSOP formats. The X9315UM specifically denotes the 50 kΩ version in the MSOP-8 package. Other series members may support different voltage ranges or have logarithmic tapers instead of linear.

Digital Potentiometers Replacement Considerations

The X9315USZ-2.7T1 serves as a compatible alternative if the application requires operation down to 2.7 V and uses an SOIC-8 package. Note that the USZ variant has a different operating voltage range and potentially different current specifications. Direct pin-for-pin replacement is possible, but electrical parameters must be validated against the new part's datasheet.