X9315TM

Digital Potentiometers Overview

The X9315TM is a digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics Corporation. It features a single circuit with 32 tap positions and a resistance value of 100 kOhms. The device utilizes an increment/decrement control interface via CS, U/D, and INC inputs. It incorporates nonvolatile memory to retain wiper settings across power cycles. The component operates within a supply voltage range of 2.7V to 5.5V and is housed in an 8-MSOP package.

Digital Potentiometers Feature Summary

• Nonvolatile memory retains wiper position upon power-up
• 3-wire serial interface for control (CS, U/D, INC)
• Linear taper with 32 discrete tap positions
• Low power consumption with 50 uA operating current

Digital Potentiometers Applications

• Audio volume control circuits
• Variable gain amplifier adjustment
• Voltage reference trimming
• Programmable filter frequency setting

Digital Potentiometers Procurement Notes

Verify the specific suffix of the part number, as variants such as X9315TMIZ or X9315TMZT1 may differ in packaging or temperature rating. Confirm RoHS compliance status and check for obsolescence notices from Renesas, as older manufacturing runs may be discontinued. Ensure the required tape and reel quantity matches distributor standards if automated assembly is planned.

Digital Potentiometers Selection Notes

Select this component when a 100 kOhm digital potentiometer with nonvolatile storage is required. The 8-MSOP package suits space-constrained surface-mount designs. Verify that the 3-wire interface compatibility exists with the host microcontroller. Consider the ±20% tolerance and ±300ppm/°C temperature coefficient for precision applications.

Digital Potentiometers Part Context

The X9315 belongs to the XDCP family of low-noise, low-power digitally controlled potentiometers. This series integrates resistor arrays, wiper switches, and EEPROM into a single CMOS IC. The TM designation typically indicates a specific temperature grade or package variant within the broader X9315 product line managed by Intersil and subsequently Renesas.

Digital Potentiometers Replacement Considerations

Direct substitutes include other X9315 variants like X9315TMZ or X9315TMIZ, provided pinouts and electrical specifications match. Cross-reference with other 32-tap digital potentiometers from manufacturers such as Analog Devices or Microchip if pin-compatible alternatives are needed.