X9315UMIT1

Digital Potentiometers Overview

The X9315UMIT1 is a digitally controlled potentiometer (XDCP) manufactured by Renesas Electronics. It features a single potentiometer with 32 taps and a total resistance of 50 kOhms. The device utilizes a non-volatile memory to store wiper positions, allowing recall upon power-up. It operates on a serial 3-wire interface for control. The component supports supply voltages ranging from 2.7 V to 5.5 V and consumes a typical operating current of 50 uA. It is housed in an 8-MSOP surface-mount package.

Digital Potentiometers Feature Summary

• Non-volatile memory retains wiper position settings across power cycles
• 3-wire serial interface controls the wiper position via CS, U/D, and INC inputs
• Linear taper with 32 discrete tap points for precise resistance adjustment
• Low power consumption with 50 uA operating current

Digital Potentiometers Applications

• Audio volume control circuits
• Gain adjustment in instrumentation amplifiers
• Voltage reference trimming
• Calibration of sensor signals

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T1' against official Renesas documentation to confirm tape-and-reel packaging specifications. Confirm RoHS compliance status as it varies by manufacturing site and date code. Check for end-of-life or last-time-buy notices given the product's age. Ensure the 8-MSOP footprint matches the target PCB design constraints.

Digital Potentiometers Selection Notes

Select this component when a non-volatile digital potentiometer with 50 kOhm resistance is required. The 32-tap resolution may be insufficient for high-precision applications requiring finer steps; consider higher-tap variants if necessary. Verify that the 3-wire interface is compatible with the host microcontroller's available SPI or GPIO pins. Ensure the operating voltage range of 2.7 V to 5.5 V aligns with the system power rails.

Digital Potentiometers Part Context

The X9315UMIT1 belongs to the X9315 series of low-noise, low-power digitpotentiometers. This series is characterized by its CMOS technology and EEPROM-based storage. The 'UMI' designation typically indicates an MSOP package variant, while 'T1' denotes reel packaging. It is part of the broader XDCP family designed for replacing mechanical potentiometers in space-constrained designs.

Digital Potentiometers Replacement Considerations

Direct pin-to-pin replacements within the same package include other X9315 variants such as X9315UMIZ or X9315USIZ, provided the resistance value and interface compatibility are verified. Cross-reference datasheets to ensure identical electrical characteristics and memory retention properties.